3 years ago

Choose the function that the graph represents

Mathematics

1 answer:

Reil [10]3 years ago

5 0

I honestly don't know if this is correct but it might be i think its the middle one y=f(x)=x to the second power

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8x + 3y = 10<br> -2x - 10y =16

Len [333]

Answer:

(2,-2)

x=2

y=-2

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3 years ago

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What's the area of the composite figure below ?

JulsSmile [24]

Answer:

31.13

Step-by-step explanation:

If you look carefully, you will find a semicircle and a triangle.

The total area is =

$\frac{\pi r^{2}}{2} + \frac{1}{2} \times base \times height\\$

r = 4 - 0 = 4
base = |-4-0 | = 4
height = 14 - 9 = 5

So if we put the values:

$\frac{\pi \times 4^{2}}{2} + \frac{1}{2} \times 4 \times 3\\= 31.13$

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3 years ago

From an industrial area 70 companies were selected at random and 45 of them were panning for expansion next year. Find 95% confi

Lana71 [14]

Answer:

Confidence limit = [52.8%, 75.2%]

Step-by-step explanation:

$P=\frac{45}{70}= 0.64$

$(1-P)=1-0.64=0.36$

$n= 70$

$P$ ± $z$ $\sqrt{\frac{P(1-P)}{n} }$

where the value $z$ will be taken from the z-table for 95% confidence interval

1-0.95= 0.05/2= 0.025

0.95+0.025= 0.0975

From the z-table the value of $z$ corresponding to 0.0975 is 1.96

$0.64$ ± $1.96$ $\sqrt{\frac{0.64*0.36}{70} }$

$0.64$ ± $1.96$ $(0.057)$

$0.64$ ± $0.112$

$64%$ % ± $11.2$ %

so the confidence interval is

$64+11.2=75.2$ %

$64-11.2=52.8$ %

$[52.8, 75.2]$

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3 years ago

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Answer:

lete try to help you my insta it's Cruzz_ and other letters

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2 years ago

A skydiver jumped out of a plane descended 0.8 miles in 2.5 minutes. What is the skydiver average change of altitude per minute?

Illusion [34]

Because .8 divided by 2.5 equals .3

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