Answer:
1. t = 0
2. t = 6.348
Step-by-step explanation:
1. Time cannot be negative.
2. The potato will not go through the ground.
Answer:
1. 0 seconds.
2. 6.35 seconds.
Step-by-step explanation:
There are two lowest times in the situation, and both occur when the potato is 0 feet from the ground.
0 = -16t^2 + 100t + 10
16t^2 - 100t - 10 = 0
8t^2 - 50t - 5 = 0
To solve for t, use the quadratic formula, where a = 8, b = -50, and c = -5.
[please ignore the A-hat; that is a typo]
[tex]\frac{--50±\sqrt{(-50)^2 - 4 * 8 * (-5)} }{2 * 8}[/tex]
= [tex]\frac{50 ± \sqrt{2500 + 160} }{16}[/tex]
= [tex]\frac{50±\sqrt{2660} }{16}[/tex]
= [tex]\frac{50±\sqrt{2^2 * 5 * 7 * 19} }{16}[/tex]
= [tex]\frac{50 ± 2\sqrt{665} }{16}[/tex]
= [tex]\frac{25±\sqrt{665} }{8}[/tex]
So, one value is...
[25 - sqrt(665)] / 8 = (25 - 25.78759392) / 8 = -0.7875939165 / 8 = -0.0984482396
BUT... the value is negative, and time cannot be negative. So, the LOWEST time that applied to the actual situation is 0 seconds.
The other value is...
[25 + sqrt(665)] / 8 = (25 + 25.78759392) / 8 = 50.78759392 / 8 = 6.34844924
Since the value is positive, it is valid. So, the GREATEST time that applies to the situation is about 6.35 seconds.
Hope this helps!
CANT seem to find the answer
Answer:
A) Point C
B) Point E
Step-by-step explanation:
There are 3 vowels in the word square, and there are six total letters in the word square.
Square
There is a half chance of picking a letter that is a vowel in the word "square". (Three is half of six.)
Point C would be the most accurate spot for question 'a'.
The word square does not have a 'T'. It is certain that a letter that is not 'T' would be picked.
Point E would be the most accurate spot for question 'b'.
Answer:
a) c b) e
Step-by-step explanation:
There are 3 vowels out of 6 total cards, and c lands at 3/6->1/2.
There is no letter T, so it is a 1/1 chance of not getting a T. E lands at 1.
You're welcome.
If f(x) =1/4x+14, then f^-1(x)=
Answer: f⁻¹(x)=4x-56
Step-by-step explanation:
f⁻¹(x) is the inverse of f(x). To find the inverse, we replace the y with x, and x with y. Once we do that, we solve for y.
[tex]x=\frac{1}{4}y+14[/tex] [subtract 14 on both sides]
[tex]x-14=\frac{1}{4}y[/tex] [multiply both sides by 4]
[tex]4(x-14)=y[/tex] [distribute 4]
[tex]4x-56=y[/tex]
[tex]f^-^1(x)=4x-56[/tex]
What is the probability of selecting a male from a group of 4
males and 8 females?
1
A 1/3
B 1/2
С 2/3
D 4/5
Answer:
[tex]P(Male) = \frac{1}{3}[/tex]
Step-by-step explanation:
Given
[tex]Male = 4[/tex]
[tex]Female = 8[/tex]
Required
Probability of selecting a male
First, we need to get the total population;
[tex]Total = Male + Female[/tex]
[tex]Total = 4 + 8[/tex]
[tex]Total = 12[/tex]
Let P(Male) represent Probability of Male
Let n(Male) represent number of Male
[tex]P(Male) = \frac{n(Male)}{Total}[/tex]
[tex]P(Male) = \frac{4}{12}[/tex]
Simplify fraction by dividing the numerator and denominator by 4
[tex]P(Male) = \frac{1}{3}[/tex]
Hence, the probability of selecting a male is 1/3
What is the coefficient in this expression?
5-4.7-2x+5/8
-4.7
-2
5/8
5
Answer:
in this expression, -2 is the coefficient.
Step-by-step explanation:
We know that, a coefficient is the number or value placed before a variable in an algebraic expression. here, the only variable is x, so, the coefficient is -2.
in other words, we can say that -2 is the coefficient of x.
Answer: -2
Step-by-step explanation:
The table represents a linear function. Two Columns Five Rows Column X (-2,-1,0,1,2) and Column Y (8,2,-4,-10,-16) What is the slope of the function? a. -6 b. -4 c. 4 d. 6
Answer: A
Slope = -6
Step-by-step explanation:
Given that the column of the table are:
Column X (-2,-1,0,1,2) and
Column Y (8,2,-4,-10,-16)
Since the table represent a linear function, the equation of the function will obey the general linear equation
Y = MX + C
Where M = slope
M = ( Y2 - Y1 ) / ( X2 - X1 )
Let Y1 = 8, Y2 = 2 and X1 = -2 and X2 = -1
Substitutes all the parameters into the formula
M = ( 2 - 8 )/( -1 - - 2 )
M = ( 2 - 8 ) / ( -1 + 2 )
M = -6/1
M = -6
Therefore, the slope of the function is -6
A motor powers a model car so that after starting
from rest, the car travels s inches in t seconds,
where s = 16t\t. Which of the following gives the
average speed of the car, in inches per second, over
the first t seconds after it starts?
Answer:
B) 16√t
Average speed of the car =16√t inches per second
Step-by-step explanation:
A) 4√t
B) 16√t
C) 16 / √t
D) 16t
Speed = distance / time
Distance = 16t√t
Time = t
Substitute the value of distance and time into the formula
Speed = distance / time
Speed = 16t√t / t
= 16√t
Therefore, speed = 16√t
Average speed of the car =16√t inches per second
Ans B
PKEASE HELP Based on the graph, what is one solution of the equation f(x) = g(x)? graph of function f of x equals negative x plus one half and graph of function g of x equals x squared plus 3 multiplied by x minus 4 x = 1 x = −5 x = −4 x = −0.5
Answer:
x=1
x=-5
Step-by-step explanation:
we know that
The solution of the system of equations is the intersection point both graphs
In this problem there are two intersection points
so
The system has two solutions
we have
one solution is the point (-4.9, 5.4) and the other (0.92, -0.42)
see the attached figure
therefore
x=1
x=-5
Step-by-step explanation:
Find the equation of the line
Answer:
y= 2x +12
Step-by-step explanation:
Given:
line y= 2x -7the point (-3. 6)The line parallel to the given has the same slope of 2, let's find the intercept using the given point:
y= 2x+b6= 2*(-3)+bb= 6+6= 12So the equation is:
y= 2x +12On a piece of paper, graph f(x) =
(x if x <1 1 if x>_ 1
. Then determine which answer
choice matches the graph you drew
Graph of function is attached below.
Option D is correct.
To understand more, check below explanation.
Graph of function:We have to draw the graph of function,
[tex]f(x)=\left \{ {x, {x < 1} \atop {1, x\geq 1}} \right.[/tex]
The graph of above function is attached below,
For domain [tex]x > 1, f(x)=x[/tex]
For domain, [tex]x\geq 1, f(x)=1[/tex]
After observing attached graph, option D is correct.
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The function is plotted and is attached , Option D is the correct graph similar to one in the image.
What is a function ?It is an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (dependent).
It is given in the question that
f(x) =
x if x <1
1 if x>_ 1
The graph of above function is attached below,
For domain x > 1, f(x)=x
For domain, x≥ 1, f(x)=1
When we see the graph that have been plotted on the basis of domain, Option D is the correct graph similar to one in the image attached.
To know more about Function
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Carter graphs the equivalent ratios shown in the table. Yellow tiles 2 4 6 8 Red tiles 4 8 12 16 If one of the ordered pairs Carter graphs is (4, 2), which other ordered pairs does he graph? Check all that apply. (2, 4) (6, 12) (8, 4) (12, 16) (16, 8)
Answer:
The correct options are:
(8,4)
(16,8)
Step-by-step explanation:
The table is given which shows the number of yellow tiles and red tiles.
The first row in the table shows that if there are 4 red tiles then there will be 2 yellow tiles. This relation can be defined as the number of red tile will always be double the amount of number of yellows tiles. Carter graphs this point as (4,2) where number of red tiles are plotted on x axis and number of yellow tile are plotted on y axis.
Consider the second row of the table. Number of red tiles is 8 while number of yellow tiles is 4, so the point he plots on the graph is (8,4)
Similarly, other points are (12,6) and (16,8)
Answer:
It's (8, 4) and (16, 8)
Step-by-step explanation:
♥ I got it right on edge ♥
I need help with this problem, if anyone could help ASAP, that would be much appreciated. In the figure below, mROP = 125° Find the measure of each arc. For each arc, write two or more complete sentences explaining which theorem or postulate you used to find your answer. Include your equations and calculations in your final answer. find mRP, MQS, MPQR, and MRPQ
Answer:
mRP = 125°
mQS = 125°
mPQR = 235°
mRPQ = 305°
Step-by-step explanation:
Given that
mROP = 125°∠ROP is a central angleThen:
measure of arc RP, mRP = mROP = 125°Given that
∠QOS and ∠ROP are vertical anglesThen:
mQOS = mROP = 125°measure of arc QS, mQS = mROP = 125°Given that
∠QOR and ∠SOP are vertical anglesThen:
mQOR = mSOPGiven that
The addition of all central angles of a circle is 360°Then:
mQOS + mROP + mQOR + mSOP = 360°
250° + 2mQOR = 360°
mQOR = (360°- 250°)/2
mQOR = mSOP = 55°
And (QOR and SOP are central angles):
measure of arc QR, mQR = mQOR = 55°measure of arc SP, mSP = mSOP = 55°Finally:
measure of arc PQR, mPQR = mQOR + mSOP + mQOS = 55° + 55° + 125° = 235°
measure of arc RPQ, mRPQ = mROP + mSOP + mQOS = 125° + 55° + 125° = 305°
Maths help again! It is much appreciated
if there are 54 in total, and 32 are women, that means 22 are men, we get this by subtracting 32 from 54 (54-32).
then if 18 of the 41 are male, who are right handed, subtract 18 from 41 (41-18) to get 23. that means there are 23 right handed women.
then we do 32-23 to get 9, this is how many left handed women there are.
then we do 22-18 which is 4. there are 4 left handed males
Find mZYCD
Y
21x-7
с
100° 5x+5
E
D
A) 1199
B) 140°
C) 1230
D) 40°
Answer:
B)140
Step-by-step explanation:
So a line is=180 and the interior angles of a triangle= 180, so I did some manipulations
1. 100 + (5x+5) + <ECD = 180. But we also know that (21x-7) + <ECD=180. With some manipulation we can find that <ECD= 180 - (21x-7), so we can plug that into the other equation
2. Now: 100 + (5x+5) + (180- (21x-7))= 180
3. Solve:
105+5x+180-21x+7=180
112-16x=0
112=16x
x=7
4. Plug x=7 into 21x-7= 140
The formula for the volume of a cylinder is V =
Answer:
A
Step-by-step explanation:
Let me know If you want me to explain it.
Answer:
A. h = V/(pi * r^2)
Step-by-step explanation:
V = pi r^2 h
Divide both sides by pi r^2.
V/(pi r^2) = h
The h variable is isolated now.
Use the substitution method to solve the system of equations. Choose the correct ordered pair.
Solution:
x + y = 11, -x = -y - 9
~Isolate x in [ x + y = 11 ]
x = 11 - y
~Substitute x in the other equation
-(11 - y) = -y - 9
~Simplify
-11 + y = -y - 9
y = -y + 2
2y = 2
y = 1
~Substitute y in the first equation
x + 1 = 11
~Simplify
x = 10
Therefore, the solution to the system of equations is (10, 1)
Best of Luck!
When 14 is subtracted from 6 times a number, 40 is
left. What is half the number?
brainliest given to the first answer given
Answer:
4.5
Step-by-step explanation:
Let the number be x
6x-14 = 40
Add 14
6x = 40+14
6x = 54
Divide by 6
6x/6 = 54/6
x = 9
We want 1/2 of the number
1/2 of 9 is 4.5
Applying the properties of exponents, which mathematical operation changes 2 1/3 to 2?
Hope this helps!
Stay safe and have a great day :D
The properties of exponents, which mathematical operation changes 2 1/3 to 2 is 2^(1/3) * 2^(2/3) = 2
What is exponent?Exponent is a quantity representing the power to which a given number or expression is to be raised, usually expressed as a raised symbol beside the number or expression (e.g. 3 in 23 = 2 × 2 × 2).Exponentiation is a mathematical operation, written as bⁿ, involving two numbers, the base b and the exponent or power n, and pronounced as "b raised to the power of n".How to solve this problem?The steps are as follow:
Applying the properties of exponents:a^m * a^n = a^(m + n)
So2^1 = 2^(1/3) * 2^n
2^1 = 2^(1/3)+n
1 = (1/3) + n
n = 2/3
So the properties of exponents, which mathematical operation changes 2 1/3 to 2 is 2^(1/3) * 2^(2/3) = 2
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Need help again! Thanks
Answer:
69.08 [tex] {m}^{2} [/tex]Step-by-step explanation:
Given,
Radius ( r ) = 1 m
Height (h) = 10 m
Surface area of cylinder= ?
Now,
Surface area of cylinder :
[tex]2\pi \: {r}^{2} + 2\pi \: r \: h[/tex]
[tex] = 2\pi \: r \: (r + h)[/tex]
[tex] = 2\pi \: \times 1(1 + 10)[/tex]
[tex] = 2\pi \: \times 1 \: \times 11[/tex]
[tex] = 22\pi[/tex]
[tex] = 22 \: \times 3.14[/tex]
[tex] = 69.08 \: {m}^{2} [/tex]
Hope this helps...
Good luck on your assignment..
Instruction
Active
Writing a Rule for a Rotation
Try it
What rule describes the rotation about the origin?
C'
(x, y)
4
tated about the
✓
2
A'
B'
(y, -x)
-4
-2
2
(-y, x)
B
A
-2
(-x-y)
(x, y)
Explanation:
Focus on one point, such as A = (1,2). Note how it moves to point A ' = (-1, -2). Both x and y coordinates have been flipped from positive to negative. The rule therefore is [tex](x,y) \to (-x,-y)[/tex]. This describes a 180 degree rotation (either clockwise or counterclockwise, it doesn't matter). Points B and C follow the same idea.
Side note: Lines AA', BB' and CC' all go through the origin (0,0).
solve the math problem please
Answer:
Option D
Step-by-step explanation:
Collect all like terms and Calculate
-10x-7x= -17x
20-54= -34
Divide
-17x < -34
x>2
Answer:
B 2 ≤x
Step-by-step explanation:
54 - 10x ≤20 +7x
Add 10x to each side
54 - 10x+ 10x ≤20 +7x+10x
54 ≤20 + 17x
Subtract 20 from each side
54-20 ≤20+17x-20
34 ≤17x
Divide by 17
34/17 ≤17x/17
2 ≤x
What is the mode of this data set? 35,36,35,38,37,38,38,38,33,40,34,36,36,38,39,38,37,33,37,38,36,32,36,37,32
Answer:
38
Step-by-step explanation:
The most occuring number is the mode, which in this case is 38.
Answer: 38
Step-by-step explanation:
The mode of a data set is the number that shows up the most, in this case 38, which shows up 7 times.
Hope it helps <3
Does the data in the table represent a direct variation or an inverse variation? Write an equation to model the data in the table.
X:2,4,8,12 Y:6,3,3/2,1
Answer:
- Inverse Variation
- Equation: [tex]XY = 12[/tex]
Step-by-step explanation:
Given
X-> 2 | 4 | 8 | 12
Y-> 6 | 3 | 3/2 | 1
Required
- State the type of variation the table represents
- Determine the equation to model the data
To check for type of variation; we'll make use of trial by error method.
To start with; We'll check for direct variation.
This is done using the following expression;
[tex]Y = kX[/tex]where k is the constant of variation
Make k the subject of formula
[tex]k = \frac{Y}{X}[/tex]
When Y = 6, X= 2
[tex]K = \frac{6}{2} = 3[/tex]
When Y = 3, X = 4
[tex]K = \frac{3}{4}[/tex]
There's no need to check further as both values of k are not equal
To check for inverse variation;
[tex]Y = \frac{k}{X}[/tex]
Make k the subject of formula
[tex]k = YX[/tex]
When Y = 6, X= 2
[tex]K = 6 * 2 = 12[/tex]
When Y = 3, X = 4
[tex]K = 3 * 4 = 12[/tex]
When Y = 3/2; X = 8
[tex]K = \frac{3}{2} * 8 = \frac{24}{2} = 12[/tex]
When Y = 1, X = 12
[tex]K = !2 * 1 = 12[/tex]
Note that for all values of X and Y, K remains constant;
Hence, the table represents an inverse direction
To determine the equation;
We make use of [tex]k = YX[/tex]
Substitute 12 for k
So, the equation becomes
[tex]12 = XY[/tex]
Reorder
[tex]XY = 12[/tex]
Hence, the equation is [tex]XY = 12[/tex]
What is the solution to 5/8 X -1/3 < 1 1/3
Answer:
x< 2 2/3
Step-by-step explanation:
5/8 X -1/3 < 1 1/3
Add 1/3 to each side
5/8 X -1/3+1/3 < 1 1/3+1/3
5/8x < 1 2/3
Change to an improper fraction
5/8 x < 5/3
Multiply each side by 8/5 to isolate x
8/5 * 5/8x < 5/3 * 8/5
x < 8/3
Changing back to a mixed number
x< 2 2/3
Can someone please explain to me how to solve for x?
Answer:
X is a missing number . Find the missing number then multiply for example that 8 to the x then what the x is it’s the same number for all
Step-by-step explanation:
I need help with this problem, if anyone could help ASAP, that would be much appreciated. Please do not answer if you don't know the answer because you're wasting my points. In the figure below, mROP = 125° Find the measure of each arc. For each arc, write two or more complete sentences explaining which theorem or postulate you used to find your answer. Include your equations and calculations in your final answer. find arc mRP, and arc MQS,
Answers:
minor arc RP = 125 degrees
minor arc QS = 125 degrees
============================================================
Explanation
Definition: A minor arc is a piece of a circle such that it is smaller than a semi-circle with the same radius. In other words, it's measure is always less than 180 degrees.
Based on this definition, a minor arc is where we take the shortest path between any two points on a circle. For minor arc RP, we start at R then go to the right and take the shortest path to P. We do not go left when we start at R because that's the longer path and it is the major arc.
Minor arc RP is subtended by central angle ROP = 120 degrees. This central angle is equal to the arc measure in question. This isn't really a theorem, but more a definition if anything.
Central angle QOS is equal to angle ROP through the vertical angles theorem. Any pair of vertical angles are always congruent. Since QOS is 125 degrees, so is minor arc QS.
Answer:
Arc RP is 125, Arc QS is 125, Arc QR is 55, and arc SP is 55
Step-by-step explanation:
We know Arc QS is 125 degrees because angle QOS is a vertical angle with Angle ROS, so Arc QS is 125, and ARC RP is 125. We can figure out the other two arcs using the knowledge that ARC QR is equal to arc PS because angle QOR an SOP are vertical angles and all the degrees have to add up to 360. From this we get 2x + 125 + 125 = 360. From here we simplify and get 2x + 250 = 360; 2x = 110; x = 55, so arc QR and ARC SP are both 55.
Hope this helps :)
The graphs below show measurements from cubes with different side lengths. Which pairs of variables have a linear relationship? Select two options.
Answer:
side length and perimeter of 1 face
area of 1 face and surface area
Step-by-step explanation:
The missing options are:
side length and perimeter of 1 face perimeter of 1 face and area of 1 face surface area and volume area of 1 face and surface area side length and volumeIn the picture attached, the cube measurements are shown:
In a linear relationship:
variable a / variable b = k
Case: side length and perimeter of 1 face
12/3 = 16/4 = 20/5 = 24/6 = 4
Case: perimeter of 1 face and area of 1 face
12/9 ≠ 16/16 ≠ 20/25 ≠ 24/36
Case: surface area and volume
54/27 ≠ 96/64 ≠ 150/125 ≠ 216/216
Case: area of 1 face and surface area
54/9 = 96/16 = 150/25 = 216/36 = 6
Case: side length and volume
27/3 ≠ 64/4 ≠ 125/5 ≠ 216/6
The side length and the perimeter of one face have a linear relationship.
Linear equationA linear equation is in the form:
y = mx + b
where y, x are variables, m is the rate of change and b is the y intercept.
From the graph:
The side length and the perimeter of one face have a linear relationship.
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11 You deposit $1200 in an account. The annual interest rate is 3%. How long will it take you to earn S108 in simple interest?
Answer:
its wht u r searching for...
Answer:
3 yearsSolution,
Principal=$1200
Rate=3%=3/100=0.03
Interest=$108
Time=?
Now,
[tex]t = \frac{i}{p \times r} [/tex]
[tex] = \frac{108}{1200 \times 0.03} \\ = \frac{108}{36} \\ = 3 \: years[/tex]
Hope this helps...
Good luck on your assignment..
In the given figure, identify which of the line segments is longer than XY. Question 15 options: A) TU B) PQ C) VW D) RS
Answer:
A. T, U
Step-by-step explanation:
T and U are stretched across the paper. the others seem a bit close or smaller to the size of X and Y, but when you look at T and U they seem longer than X an Y
Hope this helps!!! :)
when f(x)=-3 what is x
Step-by-step explanation:
i think the answer is -3 only
Convert the following equation
into slope intercept form.
8x +
2y = 0
Slope intercept form of the equation 8x+2y=0 is y= -4x
What is Slope intercept form?Slope intercept form gives the graph of a straight line and is represented in the form of y=mx + c
Given,
8x+2y=0
2y =-8x
y=-4x
Hence, the Slope intercept form of the equation 8x+2y=0 is y= -4x
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