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2 years ago

Find the value of 7x+2y when x=2 and y=-9

Mathematics

2 answers:

Varvara68 [4.7K]2 years ago

8 0

Answer:

Step-by-step explanation:

7×18+2×18=32

x=14

y=18

Have a great day!

Nostrana [21]2 years ago

6 0

Answer = -4

Step-by-Step Explanation:

Given: x = 2, y = -9

Therefore, substituting the values
= 7x + 2y
= 7(2) + 2(-9)
= 14 + -18
= 14 - 18
= -4

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diamong [38]

Answer:

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2 years ago

A piece of cable 8.5 cm long weighs 52 grams. How much does a cable that is 10 cm long weigh

Arturiano [62]

8.5 cm cable weighs = 52 grams

1 cm of cable weighs = $\frac{52}{8.5}grams$

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= $52* \frac{10}{85}$ grams
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Then,

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3 years ago

Question60 is 40% of what number?

Natalka [10]

let the required number be x then

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So 60 is 40% of 150.

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1 year ago

Simplify...... <br> (U^2)^3

pochemuha

$(U^{2})^{3} = U^{2*3} = U^{6}$

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2 years ago

Show your smartness by answering the questions! First one to answer gets Brainlest!

shusha [124]

Answer:

3.56*10^13

Step-by-step explanation:

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Multiply the number out front and then the exponents

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35.6 * 10^(4+8)

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But this is not in proper scientific notation. Only one digit before the decimal

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3 years ago