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frez [133]
2 years ago
12

Compare the numerical expressions.

Mathematics
1 answer:
lord [1]2 years ago
5 0

Answer + Step-by-step explanation:

<u>24 + 7 and 9×(24+7)</u>

      31 and 9 x (31)

      31 and 279

the number is multiplied by 9

<u>12 - 7 and 4x(12-7)</u>

      5 and 4 x (5)

      5 and 20

the number is multiplied by 4

<u>3×(21 + 4) and 21 + 4</u>

3 x (25) and 25

        75 and 25

the number is multiplied by 3

making the left side 3 times larger

<u>40 × 5 and 40 × 20​</u>

   200 and 800

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Cherries cost 4 dollars per pound. Mother bought r lbs and father bought 2 lbs. How much more money did mother spend on cherries
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T=  the total cost

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Shrina is selling cookie dough for her soccer team. She sold 2 tubs of
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Step-by-step explanation:

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3 years ago
If the value of "Y" varies directly with "X" and y=-8,when x=20,find "Y"if x=-4
kherson [118]

Answer:

y is 8/5 when x = -4.

Step-by-step explanation:

If the value of "Y" varies directly with "X", we can write y = kx, where k is the constant of proportionality.

If "y=-8,when x=20," then we can find k:    -8 = 20k, or k = -2/5.

Then y = (-2/5)x.

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3 years ago
Which ordered pair (p,r) is the solution to the given system of linear equations?
Misha Larkins [42]

Answer:

(p,r) = (1/3, 2/9)

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Here, we want to solve a system of equations

We can rewrite the second equation by dividing through by 2

So we have;

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5p - 3r = 1

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Kelvin is used when answering gas law problems.

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