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irina1246 [14]
3 years ago
10

I need help with #45...

Mathematics
1 answer:
DiKsa [7]3 years ago
6 0
 Check this out:
 http://prntscr.com/dr7l2n

So we have:

x + x + (x-6) + (x-6) = 188

2x +(x-6) + (x-6)

5x - 12 = 188

5x = 200

x = 40

So the length is 40, the width is 40-6 = 34.

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Solve s=2πrh for π <br> I need this answer asap
STatiana [176]
Answer is on the picture and all the work that I showed

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3 years ago
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Arelli uses 6.9 pints of white paint and blue paint to paint her bedroom walls. 3/4 of this amount is white paint, and the rest
Reika [66]

Answer:

1.73

Step-by-step explanation:

Arelli use 6.9 pints of white and blue paints for her bedroom

3/4 of this amount is white

3/4

= 0.75×100

= 75

100-75

= 25

Amount of blue paint is

25/100×6.9

= 0.25×6.9

= 1.73

4 0
3 years ago
The table below represents a linear function f(x) and the equation represents a function g(x):
lana66690 [7]

Answer:

Step-by-step explanation:

Part A

for f(x) slope between points (-1,-6) and (1,0)

m= y2-y1/x2-x1 = -6-0/-1-1 = -6/-2= 3

for g(x) slope m=4 because we compare to equation y=mx+b the given equation g(x)=4x-5

The slope of f(x) is 3 and the slope g(x) is 4 so the line of g(x) is steeper

part B

The y intercept for g(x) is  (0, -5)

The equation of f(x) can be found

y-y1 =m(x-x1) take any point for example point (1,0)

y-1 =3(x-0)

y=3x+1 so the y-intercept is at (0,1)

The y-intercept for f(x) is greater at y=1 then the one of g(x) at y=-5

5 0
3 years ago
According to a Gallup poll of 1012 people, about one-third of (32%) of Americans keep a dog for protection. Find the:Margin of E
WINSTONCH [101]
  • The margin of error of the proportion given is of 2.9%.
  • Applying the margin of error, the confidence interval is (29.1%, 34.9%).

-----------------------

The margin of error of a confidence interval of a proportion \pi in a sample of size n, with a confidence level of 1-\alpha, is:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

In which z is the z-score that has a p-value of 1 - \frac{\alpha}{2}.

The confidence interval is:

\pi \pm M

In this problem:

  • Poll of 1012 people, thus n = 1012.
  • 32% keep a dog, thus \pi = 0.32

95% confidence level

Thus \alpha = 0.05, z is the z-score that has a p-value of 1 - \frac{0.05}{2} = 0.975, so z = 1.96.  

The margin of error is:

M = 1.96\sqrt{\frac{0.32(0.68)}{1012}} = 0.029

As a percent, 2.9%, as 0.029 x 100% = 2.9%.

Now for the confidence interval, which is <u>percentage plus/minus margin of error</u>, thus:

32 - 2.9 = 29.1

32 + 2.9 = 34.9

The confidence interval is (29.1%, 34.9%).

A similar problem is given at brainly.com/question/16807970

4 0
3 years ago
I win £300 on a scratchcard and decide to share my winnings with my two friends Peter and Mary. Peter has 3 shares, Mary has 5 s
KIM [24]

Answer:

Step-by-step explanation:

3+5+2=10

3/10 x 300=£90

3/10 x300=£150

2/10 x300=£60

Mary receives £150

8 0
3 years ago
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