Ask question

Ask question

All categories

ivanzaharov [21]

3 years ago

7

Nina can stitch 2/3 of a dress in 4 hours. If d represents the number of dresses and h represents the number of hours, which equ

ation represents this proportional relationship

1 answer:

erma4kov [3.2K]3 years ago

5 0

Answer:

<h2><em><u>D=4 hrs</u></em></h2>

Step-by-step explanation:

You might be interested in

A scientist measured 18 grams of

olya-2409 [2.1K]

Hence, option A 0.64 is the correct answer.

Further explanation:

Ounce is a larger unit than grams. When we have to go from a smaller unit to a larger unit we use division.

So,

Given

28.3 grams = 1 ounce

Then

$18\ grams=\frac{18}{28.3}=0.636=>0.64$

Hence, option A 0.64 is the correct answer.

Keywords: Conversions, Units of measurement

Learn more about conversions at:

#LearnwithBrainly

8 0

3 years ago

a helicopter is flying at 150mph on a course with a bearing of 130°. If the helicopter experiences a crosswind blowing southeast

romanna [79]

150-25=125mph

130-25=105

This means it was going 125mph and that it dropped an altitude of 25 degrees because of the wind and the slow down of the helicopter

3 0

3 years ago

A manufacturing company with 450 employees begins a new product line and must increase their number of employees by 18%. How man

nika2105 [10]

The answer would <span>531. You would add 18% more employees to the company so the answer is 531. I really hope this helped you. Have a nice day!</span>

4 0

3 years ago

Veronica is filling a bag with marbles. She fills the bag with 8 green marbles for every 6 red marbles. The table below shows th

Lilit [14]

Answer: Off the top of my head, I can see that B is a correct statement.

Step-by-step explanation: 4 x 2 = 8

3 x 2 = 6

this multiplication shows that statement B is true.

5 0

3 years ago

An article presents voltage measurements for a sample of 66 industrial networks in Estonia. Assume the rated voltage for these n

kramer

Answer:

We accept the null hypothesis and conclude that voltage for these networks is 232 V.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 232 V

Sample mean, $\bar{x}$ = 231.5 V

Sample size, n = 66

Sample standard deviation, s = 2.19 V

Alpha, α = 0.05

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 232\\H_A: \mu \neq 232$

We use Two-tailed t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n-1}} }$ Putting all the values, we have

$t_{stat} = \displaystyle\frac{231.5- 232}{\frac{2.19}{\sqrt{66}} } = -1.8548$

Now,

$t_{critical} \text{ at 0.05 level of significance, 9 degree of freedom } = \pm 1.9971$

Since,

$|t_{stat}| > |t_{critical}|$

We accept the null hypothesis and conclude that voltage for these networks is 232 V.

4 0

3 years ago