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Ksenya-84 [330]
3 years ago
8

WILL MARK THE BRAINLIEST

Mathematics
1 answer:
Anestetic [448]3 years ago
5 0

Answer:

Step-by-step explanation:

65.97in

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Which problem could be solved by evaluating the expression 7 x (-3)?​
Tasya [4]

Answer:

The answer is -21

Step-by-step explanation:

To find the answer just multiply 7 by 3 and that's 21, so just add a negative sign to 21 and you get -21. I hope this helps :) please give me brainliest :)

6 0
3 years ago
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Multiply. (5x+7)^2 :)
tatyana61 [14]

Answer:

The answer is B.

Step-by-step explanation:

You can expand it in a simplier way using :

{(a + b)}^{2}  =  {a}^{2}  + 2ab +  {b}^{2}

So for this question :

{(5x + 7)}^{2}  \\  =  {(5x)}^{2}  + 2(5x)(7) +  {(7)}^{2}  \\  = 25 {x}^{2}  + 70x + 49

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3 years ago
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The measure of an angle is 13°. What is the measure of its complementary angle?
marysya [2.9K]

Answer:

77°

Step-by-step explanation:

Complementary angles formula

90°- x°. (X is the given angle)

So,

90°-13°

= 77°

7 0
3 years ago
Anna has two aunts, Gertie and Samantha, and one uncle, Jimbo. Jimbo has a nephew on Anna's Side of the family, Timothy, Who has
yawa3891 [41]
Hi there!

The answer is Maternal Cousin.

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3 0
3 years ago
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The perimeter of the triangle shown to the right is 321 meters. Fin the length of each side.
kodGreya [7K]

Answer: First side is 40.5 meters. Second side is 121.5 meters. The third side is 159.

Step-by-step explanation:

x + 3x + 4x -3 = 321

8x - 3 =321

      +3     +3

8x = 324

x = 40.5

Second Side:   3(40.5) = 121.5

Third side:  4(40.5) - 3  = 159

Check: 159 + 121.5 + 40.5 =  321    

3 0
3 years ago
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