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siniylev [52]
2 years ago
15

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

Mathematics
2 answers:
Varvara68 [4.7K]2 years ago
8 0

Answer:

32

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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How do I subtract fractions? Please explain step by step to get marked!
Mashutka [201]

Answer:

Explained below :)

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Step-by-step explanation:

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7 0
2 years ago
I need help with number 33!!!
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Area of Big Rectangle                                     Area of Small Rectangle

A = L x w                                                           A = L x w

 = (25 + 2w)(10 + 2w)                                           = 25 x 10

 =   250 + 50w + 20w + 4w²                               = 250

       Big - Small  

74 = 250 + 70w + 4w² - 250

74 = 4w² + 70w

0 = 4w² + 70w - 74

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  = 2[2w² -2w  |  +37w - 37]

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0 = 2                                   0 = 2w + 1                                     0 = w - 1

FALSE so disregard          w = -1/2                                         w = 1

                                         NEGATIVE so disregard

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