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Kitty [74]
2 years ago
15

A researcher is interested in understanding whether the number of people in a room affects how much a person eats. During the ex

periment, the researcher varies the number of people in the room and records how much each participant eats. This is an example of:
Mathematics
1 answer:
alex41 [277]2 years ago
4 0

Answer:

quantitative manipulation of the independent variable

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In 3 months, Peter spends $ 450 on groceries. If Peter spends the same amount each month, how much does he spend per month?
Olenka [21]
~Hello There!~

450/3 = 150
He would spend $150 each month

Hope This Helps You!
Good Luck :)
Have A Great Day ^_^

- Hannah ❤
8 0
3 years ago
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The length of a rectangular picture is 5 inches more than three times the width. Find the dimensions of the picture if its perim
luda_lava [24]

Answer:

<h3>Length = 29 inches</h3><h3>Width = 8 inches</h3><h3 />

Step-by-step explanation:

Perimeter of a rectangle = 2l + 2w

where

l is the length of the rectangle

w is the width

From the question

length of a rectangular picture is 5 inches more than three times the width is written as

l = 5 + 3w

Now substitute this into the above equation

Perimeter = 74 inches

74 = 2(5 + 3w) + 2w

74 = 10 + 6w + 2w

8w = 74 - 10

8w = 64

Divide both sides by 8

w = 8 inches

Substitute w = 8 into l = 5 + 3w

That's

l = 5 + 3(8)

l = 5 + 24

l = 29 inches

<h3>Length = 29 inches</h3><h3>Width = 8 inches</h3>

Hope this helps you

4 0
3 years ago
Read 2 more answers
Zorah, a musician, pays $120 to have her instrument tuned and $10 per hour for a booth at a fair. She estimates that she earns$2
Lana71 [14]

Answer:

To break-even, Zorah needs to play for 8 hours.

Step-by-step explanation:

<u>To calculate the break-even point in hours, we need to use the following formula:</u>

Break-even point in units= fixed costs/ contribution margin per unit

Break-even point in units= 120 / (25 - 10)

Break-even point in units= 8 hours

To break-even, Zorah needs to play for 8 hours.

5 0
3 years ago
Is it possible to prove these triangles congruent by the HL Theorem?
aleksandr82 [10.1K]

since by the provided tickmarks WE ≅ ER, and QE ≅ ET, then both triangles are congruent by LL theorem, Leg Leg.


anyhow, since those legs are congruent, their hypotenuses must also be congruents, and we could use the HL theorem as well.

4 0
3 years ago
Read 2 more answers
There were 340,000 cattle placed on feed. Write an equivalent ratio that could be used to find how many of these cattle were bet
monitta
We see this same problem pop up here on Brainly every
couple of months.  Nobody yet has ever given us enough
information to answer it. 

There's no information here that we can use to find out the
weight of any of the cattle placed on feed.  There must be
some more information BEFORE this. 

Maybe it's in the previous question in the book or on the
homework sheet, and nobody who posts this question ever
includes the information from the question before it.
3 0
3 years ago
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