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skelet666 [1.2K]
3 years ago
12

Evaluate 4x-7 when x=5

Mathematics
2 answers:
Anna007 [38]3 years ago
4 0
The answer is 13.

You can evaluate this by substituting x for 5 in the expression.

4x-7
4(5)-7
20-7
13
xz_007 [3.2K]3 years ago
4 0
Since x=5, we will make the problem into 4(5)-7. Following the order of operations, we need to multiply first. 4*5=20. Then we have 20-7, which is equal to 13. I hope this helps you!

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For what value of a is (a,9) a solution for the equation y=2x+1?
Ivahew [28]

Answer:

Step-by-step explanation:

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so sub in 9 for y and solve for x

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5 0
3 years ago
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guajiro [1.7K]

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6 0
3 years ago
Simplify -3x^2-5x^2(4x^3-x^2)2
PSYCHO15rus [73]

Let's simplify step-by-step.

−3x2−5x2(4x3−x2)(2)

Distribute:

=−3x2+−40x5+10x4

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8 0
3 years ago
PLEASE HELLPPPP ASSSAPPP
Vera_Pavlovna [14]
There’s an app called photo math where u can take a picture of the problem and it gives u the answer.


hope that helps lol
4 0
3 years ago
(a+b)2 ;a=1/2 and b=2
FrozenT [24]

Answer:

\frac{25}{4}

Step-by-step explanation:

a + b = \frac{1}{2} + 2 = 2 \frac{1}{2} = \frac{5}{2}, thus

(a + b)² = (\frac{5}{2} )² = \frac{5}{2} × \frac{5}{2} = \frac{5(5)}{2(2)} = \frac{25}{4}

8 0
3 years ago
Read 2 more answers
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