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mestny [16]
3 years ago
14

Evaluate the expression for the given value of x.−4x + 7 for x = −4

Mathematics
2 answers:
docker41 [41]3 years ago
5 0

Answer:

23

Step-by-step explanation:

-4x+7

-4(-4)+7=16+7=23

solmaris [256]3 years ago
5 0

Answer:

23

Step-by-step explanation:

-4x + 7 =

-4(-4) + 7 =

16 + 7 = 23

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Step-by-step explanation:

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A school psychologist is interested in determining if children with attention deficit disorder (ADD) learn better if English lit
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4 0
2 years ago
Solve for b. <br><br> 1/7= 90/91 +b
yanalaym [24]

♡ The Question ♡      

・1/7 = 90/91 + B

Solve for B!

*୨୧ ┈┈┈┈┈┈┈┈┈┈┈┈ ୨୧*  

* ♡ The Answer ♡      

・B = -11/13

*୨୧ ┈┈┈┈┈┈┈┈┈┈┈┈ ୨୧*      

♡ The Explanation/Step-By-Step ♡      

・1/7 = 90/91 + B

Switch sides!

90/91 + B = 1/7

Subtract 90/91 from both sides!

90/91 + B - 90/91 = 1/7 - 90/91

Simplify!

90/91 + B - 90/91 : B

90/91 + B - 90/91

90/91 - 90/91 = 0

= B

Simplify!

1/7 - 90/91 : -11/13

1/7 - 90/91

= 13/91 - 90/91

Combine the fractions!

= 13 - 90 over 91

Subtract the numbers! : 13 - 90 = -77

= -77/91

Apply the fraction rule! : -a/b = -a/b

= -77/91

Cancel the common factor! : 7

= -11/13

B = -11/13

*୨୧ ┈┈┈┈┈┈┈┈┈┈┈┈ ୨୧*      

*♡ Tips ♡      

・No tips provided!

3 0
3 years ago
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