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Murrr4er [49]
3 years ago
9

Solve for j.-13j - 20 = -8j + 20​

Mathematics
1 answer:
aleksley [76]3 years ago
8 0

Answer:

j = -8

Step-by-step explanation:

-13j - 20 = -8j + 20​

Add 13 j to each side

-13j+13j - 20 = -8j+13j + 20

-20 = 5j+20

subtract 20 from each side

-20-20 = 5j +20-20

-40 = 5j

Divide by 5

-40/5 = =5j/5

-8 =j

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Find f(−2) given that f(x)=2x2−3x+7.
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Answer:

21.

Step-by-step explanation:

f(x) = 2x^2 - 3x + 7.

When x = -2,

f(-2) = 2(-2)^2 - 3(-2) + 7

= 2(4) - (-6) + 7

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3 years ago
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Step-by-step explanation:

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Arlecino [84]
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3 years ago
The sum of three times a first number and twice a second number is 14. If the second number is subtracted from twice the first n
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Answer: 4, 1

Step-by-Step Explanation:

Let the First Number be ‘x’
Let the Second Number be ‘y’

Framing 2 Equations :-

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Multiplying Eq. 2 by 2 :-

=> 4x - 2y = 14 (Eq. 3)

Adding Eq. 1 and Eq. 3 we get :-

7x = 14 + 14
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x = 28/7
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Therefore, x = 4

Substitute value of ‘x’ in Eq. 1 :-

3x + 2y = 14
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5 0
2 years ago
What is the answer to this question?​
Yanka [14]

Answer:

Step-by-step explanation:

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3 years ago
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