Answer:approximatly -1.63092975357148
Step-by-step explanation:To solve the equation (1/2)^7x+1 = -9, we first need to get all the terms on one side of the equation by subtracting 1 from both sides. This gives us (1/2)^7x = -10.
Next, we need to get x by itself, so we take the log base 2 of both sides.
This gives us log base 2 of (1/2)^7x = log base 2 of -10.
The log base 2 of (1/2)^7 is -7, so we have -7x = log base 2 of -10
Finally, we divide both sides by -7 and get x = log base 2 of -10/-7
Using a calculator we can calculate this value which is approximatly -1.63092975357148
x = log base 2 of -10/-7 = -1.63092975357148
a sonar operator on a ship detects a submarine at a distance of 500 meters and an angle of depression of 40 degrees. how deep is the submarine?
To determine the submarine's depth, you would need to use trigonometry. The angle of depression (40 degrees) and the distance from the ship to the submarine (500 meters) form a right triangle.
You can use the tangent function (tan) to find the opposite side (depth) of the triangle, given the adjacent side (distance) and the angle.
Depth = distance * tan(angle of depression)
Depth = 500 meters * tan(40 degrees)
You can use a calculator or table to find the value of tan(40 degrees), which is approximately 0.8391.
Depth = 500 meters * 0.8391
Depth = 419.55 meters
So the submarine's depth is 419.55 meters deep.
Right triangles can be used to represent word problems involving angles of elevation and depression. When working right triangles, the trigonometric rates are used to break for the right triangle's sides and angles representing the problem.
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For the angle of depression (40 degrees) and the distance from the ship to the submarine (500 meters) the submarine's depth will be 419.55 meters
Right triangles can be used to express word problems with elevation and depression angles. When working with right triangles, trigonometric rates are employed to break for the sides and angles of the right triangle that represent the problem.
Trigonometry would be required to estimate the depth of the submarine.
Given the neighbouring side (distance) and the angle, you can use the tangent function (tan) to get the opposite side (depth) of the triangle.
Depth = distance multiplied by tan (angle of depression)
500 metre depth * tan (40 degrees)
You may determine the value of tan(40 degrees) using a calculator or a table, which is about 0.8391.
So, the value of the depth = 500 meters * 0.8391
Depth = 419.55 meters
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true or false: residuals measure the vertical distance between two observations of the response variable.
Residuals measure the vertical distance between two observations of the response variable - False.
An individual data point's residual is a measurement of how well a line fits it. Take a look at this straightforward data set with a line of fit through it.
The discrepancy between expected values of y (the dependent variable) and actual values of y is the residual for each observation. Relative to projected and actual y values, residual is equal to yi. Actual y value minus expected y value equals residual; therefore, r I = y I y i.
A symbol (often a letter) used in mathematics to represent an unknowable numerical value in an equation or algebraic statement.
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problem 5 (30 points, each 10 points). in a chemical plant, 24 holding tanks are used for final product storage. four tanks are selected at random and without replacement. suppose that four of the tanks contain material in which the viscosity exceeds the customer requirements. 1. what is the probability that exactly one tank in the sample contains high-viscosity material? 2. what is the probability that at least one tank in the sample contains high-viscosity material? 3. in addition to the four tanks with high-viscosity levels, four different tanks contain material with high impurities. what is the probability that exactly one tank in the sample contains high-viscosity material and exactly one tank in the sample contains material with high impurities?
1. The probability of selecting exactly one tank with high-viscosity material is 0.
2. The probability of selecting at least one tank with high-viscosity material is 1.
3. The probability of selecting exactly one tank with high-viscosity material and exactly one tank with high impurities is 0.25.
1. The probability of selecting exactly one tank with high-viscosity material is calculated by the binomial distribution formula, P(X = n) = (nCx)p^x(1-p)^n-x, where n is the number of trials, x is the number of successes, and p is the probability of success. In this case, n = 4, x = 1, and p = 24/24 = 1. Therefore, P(X = 1) = (4C1)1^1(1-1)^4-1 = 0.
2. The probability of selecting at least one tank with high-viscosity material is calculated by the complement rule, P(X > 0) = 1 - P(X = 0). In this case, P(X > 0) = 1 - (4C0)1^0(1-1)^4-0 = 1.
3. The probability of selecting exactly one tank with high-viscosity material and exactly one tank with high impurities is calculated by the binomial distribution formula, P(X = n) = (nCx)p^x(1-p)^n-x, where n is the number of trials, x is the number of successes, and p is the probability of success. In this case, n = 8, x = 2, and p = 24/24 = 1. Therefore, P(X = 2) = (8C2)1^2(1-1)^8-2 = 0.25.
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The roots of the equation x²-kx+28=0 are alpha (a) and alpha (a) + 3. Find the values of k.
The possible values of k are -11 and 11.
Given that equation is: x²-kx+28
Roots are: [tex]\alpha ,\alpha +3[/tex]
To find: the value of x:
The general quadratic equation is:
ax²+bx+c
Product of roots=c/a
sum of roots=-b/a
From given,
x²-kx+28=0
a = 1
b = -k
c = 28
Therefore,
Product of roots=28/1=28
sum of roots=-k/1=-k
Given roots are:
[tex]\alpha ,\alpha +3[/tex]
Therefore,
The two roots are two numbers whose difference is 3 and whose product is 28
Those two roots are 4 and 7 or -4 and -7
Then, the sum of roots is:
4 + 7 = 11
-4 - 7 = -11
Therefore, the possible values of k are -11 and 11.
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PLS HELP VERY URGENT AND NEEDED
Answer:
it A ←Have a Nice Day : ) if Incorrect sorry .
Find the coordinates of the midpoint of with endpoints K(–20, 3) and L(12, –2).
The midpoint between the two given points is given by M(-4,-11)
what is the Cartesian coordinate system?A Cartesian coordinate system in a plane is a coordinate system that specifies each point uniquely by a pair of numerical coordinates
Given here: The coordinates of the two points as K(–20, 3) and L(12, –2).
We know that the midpoint of the line between the two points is given by
x=a+b /2
and y= c+d/ 2
Where the end points of the line is given by (a,b) and (c,d)
Thus x=-20+12 /2
=-4
y= -20-2 /2
=-11
Thus the midpoint has the co-ordinates M(-4,-11)
Hence, The midpoint between the two given points is given by M(-4,-11)
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Answer: A - (-4,1/2)
Step-by-step explanation: trust me bro...
Please answer quick! The information is in the picture.
The measure of the side length CL is equal to 9m using trigonometric ratio of cosine 60° for thy right triangle ACL
What are trigonometric ratiosThe trigonometric ratios involves the relationship of an angle of a right-angled triangle to ratios of two side lengths. Basic trigonometric ratios includes; sine cosine and tangent.
Angle m∠BAC = 180° - (m∠C + m∠ABC)
m∠BAC = 180° - (90° + 30°)
m∠BAC = 60°
line AL is an angle bisector so;
m∠CAL = 30° and m∠BAL = 30°
which implies triangle ∆ALB is an isosceles with line LB = AL = 18m
considering the right triangle ∆ACL;
angle m∠L = 180° - (90° + 30°)
m∠L = 60°
cos 60° = CL/18 {adjacent/hypotenuse}
1/2 = CL/18m {cos 60° = 1/2}
CL = 18m/2 {cross multiplication}
CL = 9m
Therefore, the side length CL is equal to 9m using trigonometric ratio of cosine 60° for the right triangle ACL.
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PLEASE HELP ITS ARGENT
The amount of glass needed to cover a table measuring 0.8m long and 0.65m wide is (d) 0.52m²
How to determine the amount of the glassfrom the question, we have the following parameters that can be used in our computation:
Length = 0.8 m
Width = 0.65 m
The area of a rectangle can be calculated using tge following equation
Area = Length * Width
substitute the known values in the above equation, so, we have the following representation
Area = 0.8 * 0.65
Evaluate
Area = 0.52
Hence, the amount is 0.52 square meters
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The town is mapped on a coordinate grid with the NBI at (2, 3) and Philippine Statistics Authority (PSA) at (-4, -5). How far apart are they?
a. 10 units
b. 13 units
c. 11 units
d. 12 units
The town and PSA are (a) 10 units apart
How to determine how far they are apartFrom the question, we have the following parameters that can be used in our computation:
Points = (2, 3) and (-4, -5)
The distance between the two towns can then be calculated using the following distance equation
distance = √[(x₂ - x₁)² + (y₂ - y₁)²]
substitute the known values in the above equation, so, we have the following representation
distance = √[(2 + 4)² + (3 + 5)²]
Evaluate
distance = 10
Hence, the distance apart is 10 units
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Prompt: We recently completed a unit in math about transformations.
Compare and contrast the three types of transformations: translations, reflections, and rotations.
Include the algebraic rules, whether each transformation preserves congruence and any examples of
real-world application.
The translations, reflections, and rotations are types of transformations that change an original object to form a new image, each with its own specific rule and properties. They are used in a variety of real-world applications to change the position or orientation of objects.
There are 3 types of Transformations :
(i) Translation: A translation involves moving an object from one place to another without changing its size or orientation.
The algebraic rule for a translation is to add the same constant to each coordinate of each point
The Translations preserve congruence, meaning that corresponding parts of congruent figures will still be congruent after a translation.
An example of a real-world application of translation is moving a store to a new location.
(ii) Reflection: A reflection involves flipping an object over a line or point, creating a mirror image.
The algebraic rule for a reflection is to negate the value of one of the coordinates.
Reflections preserve orientation, meaning that the orientation of the reflected image is opposite that of the original object.
An example of a real-world application of reflection is looking at your reflection in a mirror.
(iii) Rotation: A rotation involves turning an object about a fixed point, called the center of rotation, through a certain angle.
The algebraic rule for a rotation is to multiply each coordinate by a rotation matrix.
Rotations preserve distance and angle measures, meaning that the lengths of corresponding parts and the angles between them are equal in the original and rotated images.
An example of a real-world application of rotation is turning a steering wheel to change the direction of a car.
The given question is incomplete , the complete question is
Compare and contrast the three types of transformations: translations, reflections, and rotations.
Include the algebraic rules, whether each transformation preserves congruence and any examples of real-world application.
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I don't know factor out, please slove this questuon.
Answer:
[tex]\displaystyle \frac{1}{10}(x+9)[/tex]
Step-by-step explanation:
[tex]\displaystyle \frac{1}{10}x+\frac{9}{10}=\frac{1}{10}(x+9)[/tex] because [tex]\displaystyle \frac{1}{10}(x+9)=\frac{1}{10}(x)+\frac{1}{10}(9)[/tex] by the Distributive Property
8x+4y=49
3x+2y=21
solve using elimination
The solution of the equations using elimination method is x = 2.5, y = 5.25
How to solve equations using elimination method?The elimination method is a method used to solve systems of linear equations. It involves manipulating the equations in such a way that one of the variables is eliminated, resulting in an equation in one variable that can be easily solved.
8x+4y = 49 --- (1)
3x+2y = 21 ----(2)
To eliminate x, multiply (1) by 3 and multiply (2) by 8. Then subtract the result. That is:
3 × (8x+4y = 49) = 24x + 12y = 147
8 ×(3x+2y = 21) = 24x + 16y = 168
.......................................................................
4y = 21
.........................................................................
4y = 21
y = 21/4
y = 5.25
Put y = 5.25 into (1):
8x+4y = 49
8x + 4(5.25) = 49
8x + 21 = 49
8x = 49 -21
8x = 28
x = 28/8
x = 3.5
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Which of the following is a solution set for the following graph?
The solution set for the given graph is (4, 1)
How to determine the solution set of the graphFrom the question, we have the following parameters that can be used in our computation:
The graph
On the graph, we have two straight lines of inequalites
The point that represent the solution set is any point in the shaded region
This is so because the lines are inequality lines
An instance of these points is (4, 1)
Hence, the point is (4, 1)
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a group of hikers walked 8 7/10 miles to caribou cave and then 5 1/5 miles to silver stream how far did they walk alltogether? thank u for helping !!
Answer:
13.9 miles
Step-by-step explanation:
We know
A group of hikers walked 8 7/10 miles to caribou cave and then 5 1/5 miles to silver stream. How far did they walk altogether
8 7/10 = 87/10
5 1/5 = 26/5
87/10 + 26/5 = 87/10 + 52/10 = 139/10 = 13.9 miles
So, they walked 13.9 miles.
Given
B
(
2
,
2
)
,
C
(
−
5
,
−
2
)
,
D
(
−
2
,
6
)
,
B(2,2),C(−5,−2),D(−2,6), and
E
(
5
,
y
)
.
E(5,y). Find
y
y such that
B
C
‾
∥
D
E
‾
BC
∥
DE
.
Points ( 2 , 2 ) , C ( − 5 , − 2 ) , D ( − 2 , 6 ) are equally distant from the point P(x, y) y y such that B C ‾ ∥ D E ‾ BC ∥ DE .
How to solve the poind?Assume that points ( 2 , 2 ) , C ( − 5 , − 2 ) , D ( − 2 , 6 ) are equally distant from the point P(x, y)
( 2 , 2 ) , C ( − 5 , − 2 ) , D ( − 2 , 6 )
∴PA=PB
With the aid of the distance formula
= (x 2 −x 1 )
2 +(y 2 −y 1 )
2
There are
⇒ (x+2) 2 +(y+2) 2
= (x-5) 2 +(y−2)2
(x-2) 2 +(y+6)2
⇒(x+2) 2 +(y+2)
2 =(x+2) 2 +(y+2) 2
⇒ x2−4x+4+y 2
−7y+10= x2 +4x+4+y 2 −7y+14
⇒−4x−4x−10y+7y+14−16=0
⇒−8x−3y+2=0
⇒3x+y−5=0
ΔAD
Eare Similar triangles
∴( CB / DE )=( AB / AD )
B C ‾ ∥ D E ‾ BC ∥ DE .
Points ( 2 , 2 ) , C ( − 5 , − 2 ) , D ( − 2 , 6 ) are equally distant from the point P(x, y) y y such that B C ‾ ∥ D E ‾ BC ∥ DE .
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In baseball, each time a player attempts to hit the ball, it is recorded. The ratio of hits compared to total attempts is their batting average. Each player on the team wants to have the highest batting average to help their team the most. For the season so far, Jana has hit the ball 12 times out of 15 attempts. Tasha has hit the ball 9 times out of 10 attempts. Which player has a ratio that means they have a better batting average?
A. Tasha, because she has the lowest ratio since 0.9 > 0.8
B. Tasha, because she has the highest ratio since 27 over 30 is greater than 24 over 30
C. Jana, because she has the lowest ratio since 0.9 > 0.8
D. Jana, because she has the highest ratio since 27 over 30 is greater than 24 over 30
Tasha has the highest batting average because 0.9(27/30) is greater than 0.8( 24/30 ) ( optionD)
What is ratio?A ratio is an ordered pair of numbers a and b, written a / b where b does not equal 0. A proportion is an equation in which two ratios are set equal to each other. For example, if there is 1 boy and 3 girls you could write the ratio as: 1 : 3 (for every one boy there are 3 girls) 1 / 4 are boys and 3 / 4 are girls.
The batting average for Jana is 12/15 = 0.8
The battling average for Tasha is 9/10 = 0.9
The battling average of Tasha is higher than that of Jana
0.6 can also be in form of 6/10
0.9 can also be in form of 9/10
therefore 8/10 = 24/30 and
9/10 = 27/30
Therefore Tasha has the highest batting average because 27/30 is greater than 24/30
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Answer:
27/30
Step-by-step explanation:
Evaluate the expression.
8+(22+15)
=
Step-by-step explanation:
8 + (22 + 15) = 8 + 37 = 45
To evaluate the expression, we must first perform the operations inside the parentheses. In this case, 22 + 15 = 37. Then we can add 8 to that result, which gives us 8 + 37 = 45. So the final value of the expression is 45.
Answer:
Using BODMAS, you are to solve the one in the bracket
22+15 which=37
then you add it to 8
37+8=45
1. A softball player bats six times in a game. Each at-bat results in an out, getting on base or hitting a homerun.
2. A sandwich shop has three types of sandwiches: ham, turkey, and chicken. Each s andwich can be ordered with white bread or multi-grain bread. Customers can add any combination of the six available toppings
1. A softball player can have six (6) possible outcomes
2. Six (6) combinations can be made.
How do we make the values?Since the player bats six times, it means that there is possibility of having six outs, or six on base, or six homerun or even a mixture of the three outcomes in six times. The constant touch is six times
Since the sandwiches are just three types and can be ordered with either white bread or multi-grain bread, it means that there is possibility of having two different pairs each making six possible combinations of the available toppings.
Therefore, there will be six possible outcomes and six possible combinations of the sandwiches.
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The complete question goes thus:
1. A softball player bats six times in a game. Each at-bat results in an out, getting on base or hitting a homerun. How many possible outcomes can the player have?
2. A sandwich shop has three types of sandwiches: ham, turkey, and chicken. Each s andwich can be ordered with white bread or multi-grain bread. Customers can add any combination of the six available toppings. How many combinations can be made?
An Olympic-distance triathlon includes a 1. 5 km swim. To determine the swim course of an Olympic-distance triathlon in Shoe Lake, the planners need to first find the distance between points A and B on opposite sides of a lake in order to determine where to place the buoys that will mark the swim course. You have been called in to help with determining the distances. From a point C on the shore, you find that CA = 259 m, CB = 423 m, and angle ACB measures 1320.
A. Determine the distance across the lake
B. Is the lake long enough to simply have an "out-and-back" swim course for this triathlon (that is: swimming from point A to point B and then back to point A)? If not, what additional distance will need to be set off of the straight-line distance between A and B in order to meet the distance requirements for this triathlon?
Answer: A. The distance across the lake is 626.6 m.
B. The lake is not long enough Additional 123.4m distance will need to be set off.
Step-by-step explanation:
Which is equivalent to 49^3/2?
a. 21
b. 98
c. 294
d. 343
Answer: D
Sorry if it is not.
Find the y-intercept of the line y = 7/9x + 2/3
The y-intercept of the equation of line y = (7/9)x + 2/3 is 2/3.
What is the y-intercept of the given equation of line?The slope-intercept form is expressed as;
y = mx + b
Where m is slope and b is y-intercept.
Given the equation of line in the question;
y = 7/9 x + 2/3
Simplify the right hand side
y = (7/9)x + 2/3
Using the slope-intercept form, the y-intercept is 2/3.
Therefore, the y-intercept in point form is (0,2/3).
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How much of the circle is shaded? Write your answer as a fraction in simplest form.
Answer:
3/8
Step-by-step explanation:
In these type of problems, I like making all of my denominators the same.
1/8 is good.
1/2 is half. 4/8 is also half. I'll use 4/8 because 1/8 also has the 8
A whole circle is 100%, which is 1/1. It's also 8/8
To find the shaded area, we'll first add 1/8 and 4/8. That equals 5/8. We just have to add nominators/top now because the denominator/bottom is the same
Now we'll subtract 8/8 from 5/8. Again denominator is the same, so we only need to subtract the top
8-5=3
Also known as 3/8
5
4 Harriet and Kevin are playing a game. There are a total of 11 rounds in the game and at the end
of each round only one of the players will score some points. In each round the number of points
scored is equal to the number of the round, so 1 point is scored in round 1, 2 points in round 2 and
so on.
Harriet and Kevin have played a total of 8 rounds. Harriet has scored a total of 19 points.
(a) How many points has Kevin scored?
*****
[1]
Answer: 9 points
Step-by-step explanation: 8 rounds=8 points; If Harriet has 19 points and they have played 8 rounds which equal 8 points, 19-8=9 points
what is the percent of 50 and 11
Answer:
22%
Step-by-step explanation:
[tex]\frac{11}{50}[/tex] times 100% = 22%
How do you write the sum of b and 5 times 2?
Answer: So 2(b+5) would be the answer to your question.
Step-by-step explanation:
Martin spent $68 on a new drone that he had been saving for. Now, he has $41 left in his savings jar. Click the equation that could be used to find the total of his savings, s, before he bought the drone.
How many dollars did Martin have saved before he bought the drone?
blank/ dollars
109 dollars Martin have saved before he bought the drone .
Using the conditions stated, come up with: x -68 = 41
Put the variables on the equation's left side: x = 41 + 68
Determine the difference or total: x = 109
Savings are the funds that remain after subtracting one's obligations. Cash is stored as a sort of savings.
Savings are unused funds or postponed spending. A deposit account, a pension account, an investment fund, or cash are just a few examples of ways to save money. Reducing expenses, such as recurrent fees, is a part of saving as well. The portion of money left over after paying for current expenses is what is saved. In other words, it refers to money that has been set away for use later on rather than being immediately spent. Saving enhances emotions of security and tranquilly by acting as a financial "backstop" for life's unforeseen events.
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x is a whole number if three quarters of x is subtracted from 62. the result is less than 40. find the three lowest values of x
The three lowest values of x are 30, 31 and 32.
How to find the three lowest values of x?Word problems are sentences describing a 'real-life' situation where a problem needs to be solved by way of a mathematical calculation.
The statement "x is a whole number if three quarters of x is subtracted from 62. the result is less than 40" can be written as:
62 - (3/4)x < 40
- (3/4)x < 40 - 62
-3x/4 < -22
-3x < -22 × 4
-3x < -88
x > -88/-3
x > 29.33
Since x > 29.33 and x is a whole number, the three lowest values of x are 30, 31 and 32.
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What is the value of 1/2 ÷ 1/3? Pls someoneeeeeeee answerrr
Answer: 1 1/2
Step-by-step explanation:
You have to do the keep change flip method where you keep the first fraction the same change the sign to a multiplication sign and flip the other fraction, it would then look like this: 1/2 x 3. after just multiply across and you get 1.5
Determine whether the graph represents a function.
Hi There!
Your Answer must be The Realation is a function or A...
Why did i get this answer?
To Find if a Graph is a Function, We must use the concept called vertical line test.
If the vertical line drawn across at anywhere of the graph intersects the graph at most once, we decide the given graph represents the function.
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what is 1/6 less than 2/6?
Answer: 1/6
Step-by-step explanation:
2/6 - 1/6 = 1/6