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Karo-lina-s [1.5K]

3 years ago

11

The temperature has been going down at a constant rate. In 3 hours it went down 15degrees. Which expression best shows the tempe

rature change each hour?

1 answer:

Vlada [557]3 years ago

7 0

Y=X-5 because if you algebraically find the rate per hour, you get 5.

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What is the solution to this system of equations?<br> 5x + 2y = 29<br> x + 4y= 13

Readme [11.4K]

Answer:

x = 4.5

y = 3.25

Step-by-step explanation:

Use elimination

5x + 2y = 29

x + 4y = 13 (-5)

4y(-5) = 13(-5)

2y = 29

-20y = -65

y = 3.25

Sub it back into the equation

5x + 6.50 = 29

5x = 22.5

x = 4.5

6 0

3 years ago

Hey everyone I need help on the questions please!:)

Aneli [31]

Answer:

a. 1/2

b. 1 hair cut

c. 2.5

Step-by-step explanation:

4/8 divde by 4 to simplify and that gets you 1/2

8/4 is 2 so he does one hair cut every two hours

so you know how many he can do in 2 hours so add it up. It’s going to be 2 people in four hours so it will be half a hair cut in 5 hours

8 0

3 years ago

School taxes for a local district are 2.5% of a household's income. The Smith household earns $80,000 per year. How much do the

Alex

Since 2.5% as a decimal is .025, the equation to get this is:

(.025)(80000)

Once multiplied, these equal 2,000. Or in other words, the Smiths pay $2,000 in school taxes per year.

5 0

3 years ago

Moira's chili recipe makes 12 servings and uses 12 green peppers and 4 red peppers. Drag green peppers and red peppers into the

Romashka-Z-Leto [24]

Answer:

see below

Step-by-step explanation:

Each serving uses 1 green pepper and 1/3 red pepper, so for 9 servings Moira needs 9 green peppers and 9/3 = 3 red peppers.

7 0

3 years ago

which statements are true regarding the equation? sorry it's blurry it's the best photo i could get of it all.

12345 [234]

Given that 2 large puzzle costs $16 then

2l=16

or

l=8

That means cost of 1 large puzzle = $8

Given that 3 small puzzle costs $15 then

3s=15

or

s=5

That means cost of 1 small puzzle = $5

Now we will use this information to find the correct choice.

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First choice is <u>wrong </u>as coefficient 8 is with 8l so that gives cost of 1 large not small puzzle.

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Second choice is <u>correct </u>as coefficient 8 is with 8l so that gives cost of 1 large puzzle.

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Third choice is <u>correct </u>as coefficient 5 is with 5s so that gives cost of 1 small puzzle.

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Fourth choice is <u>Wrong </u>as coefficient 5 is with 5s so that gives cost of 1 small not large puzzle.

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Fifth choice is <u>wrong </u>as constant 128 gives total cost of not the total number of puzzles.

5 0

3 years ago