Answer:
7635
Step-by-step explanation:
350(.2+21.5)+40=7635
Answer:
7525
Step-by-step explanation:
you have to multiply
Find the measure of the indicated angle.
pls help !!
Answer:
5. m<A = 25.3°; m<B = 64.7°
6. m<A = 40.2°; m<B = 49.8°
Step-by-step explanation:
Recall: SOHCAHTOA
5. Reference angle = <A
Opposite = 9
Adjacent = 19
Apply TOA:
Tan A = Opp/Adj
Tan A = 9/19
A = Tan^{-1}(9/19)
A = 25.3461759° ≈ 25.3° (nearest tenth)
Reference angle = <B
Opposite = 19
Adjacent = 9
Apply TOA:
Tan B = Opp/Adj
Tan B = 19/9
B = Tan^{-1}(19/9)
B = 64.6538241° ≈ 64.7° (nearest tenth)
6. Reference angle = A
Opposite = 20
Hypotenuse = 31
Apply SOH:
Sin A = Opp/Hyp
Sin A = 20/31
A = sin^{-1}(20/31)
A = 40.2° (nearest tenth)
Reference angle = B
Adjacent = 20
Hypotenuse = 31
Apply CAH:
Cos B = Adj/Hyp
Cos B = 20/31
B = cos^{-1}(20/31)
B = 49.8° (nearest tenth)
an experienced bricklayer can construct a small wall in 7 hours. An apprentice can complete the job in 42 hours
Answer:
6 hours
Step-by-step explanation:
The trick to this type of problem is using an equal amount of time.
The least common multiple of 7 and 42 is 42
At 7 hours per wall
In 42 hours the bricklayer could build
42/7 = 6 walls
At 42 hours per wall
In 42 hours the apprentice could build
42/1 = 1 walls
Working together in 42 hours they could build 6 + 1 = 7 walls
42hours/7walls = 6hours/ wall
--------------------------
Math only
x = 1 wall/7hours + 1wall/42 hours
use common denominator of 42
x = 6w/42 hr + 1w/42hr
x = 7w/42 hr
reduce
x = 1w / 6hr
Solve for x PLEASE HELP DUE TODAY!!!
Answer:
x = 4
Step-by-step explanation:
By intersecting tangent and secant theorem:
[tex] {(x + 2)}^{2} = x(x + 5) \\ \\ {x}^{2} + 4x + 4 = {x}^{2} + 5x \\ \\ 4x + 4 = 5x \\ \\ 4 = 5x - 4x \\ \\ 4 = x \\ \\ x = 4[/tex]
Answer:
x = 4
Step-by-step explanation:
When a secant and a tangent are drawn to a circle from a point outside the circle, the lengths are related this way:
The square of the length of the tangent equals the product of the length of the secant and the length of the segment of the secant outside the circle.
(x + 2)² = x(x + 5)
x² + 4x + 4 = x² + 5x
x = 4
A common marketing strategy used by retailers to make products appear more attractive, while customers really pay the same price, is to list a
$200 item for (5 points)
a)$10 per month for 2 months
b)$10 per week for 200 weeks
c)$20 per week for 10 weeks
d)$20 per month for 1 month
Answer:
$20 per week for 10 weeks
Step-by-step explanation:
It's the only one that even mathematically makes sense, and this tactic is also used to make it look better than $200 upfront
Write the number 4, 207 in expanded form.
A. (41000) + (2 · 100) + (0 · 10) + (7.1)
B. (4.1000) + (2 · 100) + (7.10)
C. (4.1000) + (20 · 100) + (7.10)
D. (4 .100) + (2 · 10) + (1 .7)
Answer:
(4.1000)+ (2.100) + (7.10)
the rectangle shown has an area of 105 square inches. the width is x+ 16 inches and the length is x. find the dimensions of the rectangle
Answer:
Length = 5
Width = 21
Step-by-step explanation:
(x)(x + 16) = 105
x^2 + 16x = 105
x^2 + 16x - 105 = 0
(x - 5) x ( x + 21) = 0
x - 10 = 0
x = 5
x + 21 = 0
x = -21
Now that we have the zeroes.
We have to find the most viable one to put in.
Using -21 would not make sense, so we will use 5.
Plug it in:
x = 5
(5) (5 + 16) = 105
5 ( 21) = 105
Help pls I will give you 15 point
Answer:
its c
Step-by-step explanation:
A number is 3 1/3 greater than another. If the sum of the numbers is doubled, the result in 19 1/2. What is the smaller number?
Answer:
77/24
Step-by-step explanation:
1. Find the area of each of the composite figures:
a)
6 m
8 m
10 m
Answer:
Could u include a picture of the figures as well?
Step-by-step explanation:
Please Help if you can!! I also have more questions in my profile!
Answer:
none
Step-by-step explanation:
because the zeros usually intercept with the x-axis and the parabola is nowhere near that! hope it helps!
61 POINTES!!!!!! (I will give brainliest)
A landscape architect designs a small splash pad represented by ΔABC. Then she decides to make the splash pad larger as shown by ΔADE. How are the splash pad designs alike? How are they different?
I think it is -4 and positive 2
Pls help extra points and mark brainlist
Answer:
[tex]median=6 ~eggs[/tex]
Step-by-step explanation:
[tex]The~median ~is ~the ~middle ~line ~in ~the ~box ~plot[/tex].
-----------------------------
hope it helps...
have a great day!!
Answer:
Q1 : 2. Q3: 8. Median:6
Step-by-step explanation:
2-8=6 hope that helps
A shipping box has the dimensions shown. What is the volume of the box in cuvic yards? ( two sides are 1/4 yards and one side is 1/2 yrads)
answers - 1/16 yards, 1/10yards, 1/32 yards, 1/8 yards
Answer:
[tex]C)[/tex] [tex]1/32 ~yd^3[/tex]
Step-by-step explanation:
[tex]l*b*h[/tex]
[tex]1/2*1/4*1/4=[/tex][tex]1/32 ~yd^3[/tex]--------------------
hope it helps...
have a great day!!
I need help asap! Thank you.
SOMEONE HELP ILL GIVE BRAINLIEST!!
I need help plzzzzz this is really confusing
Answer:
B. x< -3
hope it helps.
stay safe healthy and happy.Explanation:
The blue shaded region describes any x value that is smaller than -3, or that is equal to -3. We can phrase it as "x is less than or equal to -3". Therefore, that's why we go for [tex]x \le -3[/tex]
If you graphed [tex]x < -3[/tex], without the "or equal to" portion, then you would have an open circle at the endpoint. The open circle means we don't include that value as part of the solution set.
One of the two answers is wrong please help guys
Answer:
The first answer is right (18). Second answer is 50= 3.9x+2.8, which is 12.1 so 13 would be the best answer to catch at least 50 fish.
Step-by-step explanation:
Simplify the expression.
4y-y(3 - 7y) + 5+ 2(8- y)
7y2-y +21
-7y2 - y + 21
-8y + 21
-7y+21
Answer:
7y² - y + 21
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightDistributive Property
Algebra I
Terms/CoefficientsStep-by-step explanation:
Step 1: Define
4y - y(3 - 7y) + 5 + 2(8 - y)
Step 2: Simplify
[Distributive Property] Distribute parenthesis: 4y - 3y + 7y² + 5 + 16 - 2yCombine like terms (y): 7y² - y + 5 + 16Combine like terms: 7y² - y + 21Solve the value of p
Answer:
but where is que
Step-by-step explanation:
i don't see the question
Suppose that in a large metropolitan area, 85% of all households have cable tv. Suppose you are interested in selecting a group of six households from this area. Let X be the number of households in a group of six households from this area that have cable tv. For what proportion of groups will exactly four of the six households have cable tv?
Solution :
Let X denotes the number of the households tha have a cable TV.
Percentage of household that have a cable TV = 85 %
[tex]$X \sim \text{Binomial}(6, 0.85)$[/tex]
Here, we can see that each of the observations is independent and the number of the observations is fixed, n.
The probability of the success P is the same for each of the outcomes.
Therefore,
[tex]P(X=4)= \binom{6}{4}0.85^40.15^2[/tex]
= 0.08324
Helpppp 8 &11/13 as an improper fraction
Answer:
115/13
Step-by-step explanation:
convert mixed number into improper fraction
8×13+11
multiply
104+11/13
add
104+11=115
115/13
Two containers hold several balls. Once a second, one of the balls is chosen at random and switched to the other container. After a long time has passed, you record the number of balls in each container every second. In 10,000 s, you find 80 times when all the balls were in one container (either one) and the other container was empty.
Required:
a. How many balls are there?
b. What is the most likely number of balls to be found in one of the containers?
Answer:
(a) 8 balls
(b) 4 balls
Step-by-step explanation:
Let
[tex]N \to[/tex] Number of balls
For a box, the probability that there are N balls in it is:
[tex]Pr = 0.5^N[/tex]
For 2 boxes, it is:
[tex]Pr = 2 * 0.5^N[/tex]
From the question, we have:
[tex]\frac{80}{10000} \to[/tex] Favorable outcome
To solve for N, we have:
[tex]2 * 0.5^N = \frac{80}{10000}[/tex]
[tex]2 * 0.5^N = 0.008[/tex]
Divide both sides by 2
[tex]0.5^N = 0.004[/tex]
Take log of both sides
[tex]\log(0.5^N) = \log(0.004)[/tex]
Apply law of logarithm
[tex]N\log(0.5) = \log(0.004)[/tex]
Make N the subject
[tex]N = \frac{\log(0.004)}{\log(0.5)}[/tex]
[tex]N =7.966[/tex]
Approximate
[tex]N = 8[/tex]
Solving (b): Balls in one of the two boxes.
Here, we assume that each ball will have almost the same number of balls at a given instance;
Hence, we have:
[tex]Balls \approx \frac{N}{2}[/tex]
[tex]Balls \approx \frac{8}{2}[/tex]
[tex]Balls \approx 4[/tex]
4 balls in each box
Need help urgently difficult but simple math equation if you get it right ill give you brainliest.
Answer:
No.
Step-by-step explanation:
Explanation below.
what is the value of x in the triangle?
Answer:
X = 102
Step-by-step explanation:
41 + 37 + x = 180
78 + x = 180
X = 180 - 78 = 102
Eleanor scores 680 on the mathematics part of the SAT. The distribution of SAT math scores in recent years has been Normal with mean 561 and standard deviation 110. Gerald takes the ACT Assessment mathematics test and scores 27. ACT math scores are Normally distributed with mean 20.2 and standard deviation 2.1.
1. What is Elanor's standardized score?
2. What is Gerald's standardized score?
3. Assuming that both tests measure the same kind of ability, who has the higher score?
A. Gerald.
B. Elanor.
C. They both did equally well.
Answer:
1. Elanor's standardized score is 1.08.
2. Gerald's standardized score is 3.24.
3. A. Gerald.
Step-by-step explanation:
Z-score:
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
1. What is Elanor's standardized score?
Eleanor scores 680 on the mathematics part of the SAT. The distribution of SAT math scores in recent years has been Normal with mean 561 and standard deviation 110. This means that we have [tex]X = 680, \mu = 561, \sigma = 110[/tex].
The standardized score is:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{680 - 561}{110}[/tex]
[tex]Z = 1.08[/tex]
Elanor's standardized score is 1.08.
2. What is Gerald's standardized score?
Gerald takes the ACT Assessment mathematics test and scores 27. ACT math scores are Normally distributed with mean 20.2 and standard deviation 2.1. This means that we have [tex]X = 27, \mu = 20.2, \sigma = 2.1[/tex]
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{27 - 20.2}{2.1}[/tex]
[tex]Z = 3.24[/tex]
Gerald's standardized score is 3.24.
3. Assuming that both tests measure the same kind of ability, who has the higher score?
Due to the higher standardized score, Gerald
Solve the equation
z³=27
Answer: z = 3, -1.5 + 1.5[tex]\sqrt{3}[/tex]i, -1.5 - 1.5[tex]\sqrt{3}[/tex]i
Step-by-step explanation:
A cubic equation will have three solutions. This equatoin will give us one real solution. We will also have two complex solutions. These are solutions that involve "imaginary numbers" and will utilize the value i. We will write the equation in standard form and factor it.
z³ - 27 = 0
(z - 3)(z² + 3z + 9) = 0
The first factor gives us z = 3, because 3 - 3 = 0. Now, we will look at when the second factor equals 0. Let us complete the square.
z² + 3z + 9 = 0
(z² + 3z + 2.25) + 9 - 1.5 = 0
(z² + 3z + 2.25) + 6.75 = 0
(z + 1.5)² + 6.75 = 0
Lastly, we can continue solving. We will subtract 7.5 from both sides of the equation and then take the square root of both sides. Then, we will subtract 1.5 from both sides of the equation and simplify the radical. [tex]i=\sqrt{-1}[/tex].
(z + 1.5)² = -6.75
z + 1.5 = ±[tex]\sqrt{6.75}[/tex]i
z = -1.5 ±1.5[tex]\sqrt{3}[/tex]i
Answer:
z = 3, -1.5+1.5√3i, -1.5-1.5√3i
Step-by-step explanation:
You want the solutions to the equation z³ = 27.
CubicA cubic equation has three solutions. This one has one positive real solution and two complex conjugate solutions.
We can rewrite the equation to standard form, then factor the difference of cubes.
z³ -27 = 0
(z -3)(z² +3z +9) = 0
The first factor will be zero when z = 3, so that is one solution.
The second factor will be zero when ...
(z +1.5)² +6.75 = 0 . . . . . . . complete the square
(z +1.5) = ±√(-6.75) = ±√(-27/4) = ±(3/2)√(-3) . . . subtract 6.75; square root
z = -1.5 ±1.5√3i
The three solutions to the equation are ...
z = 3z = -1.5+1.5(√3)iz = -1.5-1.5(√3)i<95141404393>
Lila is making a tile pattern in the shape of a square.
One side is 9 inches across.
What is the area of the
Translate (5. – 5) down 3 units.
Then reflect the result over the x-axis.
What are the coordinates of the final point?
Answer:
(5, 8)
Step-by-step explanation:
(5. – 5) down 3 units => (5, -8)
reflect x-axis => (5 , 8)
Solve the inequality. Graph the solution
Answer: y>-2 (The symbol has a underline)
Step-by-step explanation:
Since you want to move -4 to the -6 spot, do the opposite of the negative which is positive. So add +4 to each side. And the -4 will disappear and you will be left with y>-6+4. Solve -6+4= -2 And so the answer is y>-2.
Hope this helps
A shape has 2 pairs of parallel sides and no right angles. Its sides are all the same length. What shape is it?
A. Rhombus
B. Trapezoid
C. Rectangle
D. Square
Answer: The attached figure is a parallelogram with one corner chopped off, making it a pentagon. It still has two pairs of parallel sides & no right angles.
Step-by-step explanation:
Parallelogram is the word that most generally describes such a figure. A square or rectangle, which do, of course have right angles, are special cases of the parallelogram.
I am assuming (perhaps unjustifiably) that when you say “two pairs of parallel sides” you are talking of a figure with no other sides than those four.
There are, of course, many other polygons (hexagons, octagons, decagons, etc) which have two pairs of parallel sides and other sides, any two of which may or may not be parallel.