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3 years ago

The time required to complete a job varies inversely as the number of

Mathematics

1 answer:

svp [43]3 years ago

4 0

Answer:

494/22= 22.45

~ It took one person 22.45 hours to paint a wall

Therefore, the amount of time 19 people would do the job is

= 22.45 × 19

= 426.63 hours or 427 hours 3 minutes

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Can u get the steps to solving <br> -2(4)^2+4

svp [43]

(4)^2 must be done first.

That’ll give you 16. (4x4)

16 x -2= -32

-32+4= -28

8 0

3 years ago

(a) Find a 90% confidence interval for the population mean price (per 100 pounds) that farmers in this region get for their wate

Anon25 [30]

Answer:

The margin of error (E) $=0.49$

Step-by-step explanation:

Given,

mean $\bar{x}=6.88$

standard deviation $\sigma=1.90$

sample size $n=41$

$90\% \quad \text{confidence interval}$

Critical value $=\frac{z_\alpha}{2}\quad \quad\quad[\because\;\alpha=1-\text{confidence interval}]$

$=1-0.90$

$\Rightarrow \alpha=0.1$

Critical value $=\frac{z_{0.1}}{2}$

$=z_{0.05}$

$=1.645$

The margin of error (E) $=\frac{z_\alpha}{2} \times\frac{\sigma}{\sqrt{n} }$

$=1.645\times\frac{1.90}{\sqrt{41} }$

$=0.49$

Hence, The margin of error (E) $=0.49$

Complete question is attached in below.

7 0

3 years ago

on another training ride jana bikes 15 miles in 50 minutes explain how you could find the number of miles she bikes in 1 hour ex

Oksi-84 [34.3K]

So she is going 15 miles every 50 minutes...

5 0

3 years ago

Read 2 more answers

What is the image of F for a dilation with center (0, 0) and a scale factor of 10?

kogti [31]

F = (-3,3)
scale factor of 10

-3 * 10 = -30
3 * 10 = 30

answer : (-30,30)

6 0

3 years ago

Read 2 more answers

NEED HELP ASAP PLEASE IM TRYNA PASS

V125BC [204]

Answer:

segment SV

Step-by-step explanation:

Observing the figure

we know that

The side that is common to triangle SUV and triangle VTS is only the segment SV

There are no common angles to triangle SUV and triangle VTS

therefore

The answer is the segment SV

3 0

3 years ago