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2 years ago

Which guation is represented by the graph?

Mathematics

1 answer:

Arturiano [62]2 years ago

5 0

Answer:

The First One

Step-by-step explanation:

Try to substitute x by zero for example

(the minus will gone by zero)

You will get y = +2

and the graph you see the y =+2 !!

I hope that it's a clear solution and explanation.

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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

$64+11.2=75.2$ %

$64-11.2=52.8$ %

$[52.8, 75.2]$

8 0

2 years ago

Find the area to 5 cm and 9 cm

Alexandra [31]

Answer:

$\large\boxed{A=45\ cm^2}$

Step-by-step explanation:

It's a parallelogram.

The formula of an area of a parallelogram:

$A=bh$

b - base

h - height

We have b = 9cm and h = 5cm. Substitute:

$A=(9)(5)=45\ cm^2$

5 0

2 years ago

Read 2 more answers

Describe how you can use compatible numbers to estimate 17x27

Gemiola [76]

Answer:

600

Step-by-step explanation:

all you got to do is 17 goes to what? 20 because its closer. and 27 is closer to 30.

I hope that helps you.

8 0

3 years ago

Is this a polygon?<br><br> Yes or no

katovenus [111]

Answer: No

Step-by-step explanation:

5 0

2 years ago

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Solve r=s/17−t for t

mamaluj [8]

T=-r+s/17

Explanation:

6 0

2 years ago