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den301095 [7]
4 years ago
8

Find

20%2B%207x%20-%205%20%29" id="TexFormula1" title="( {10x}^{2} - 11x + 8) + ( {2x}^{2} + 7x - 5 )" alt="( {10x}^{2} - 11x + 8) + ( {2x}^{2} + 7x - 5 )" align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
Inessa05 [86]4 years ago
4 0

Answer:

12x^2-4x+3

Step-by-step explanation:

Parentheses do not matter in this equation.

(10x^2-11x+8)+(2x^2+7x-5)=\\10x^2-11x+8+2x^2+7x-5=\\12x^2-11x+8+7x-5=\\12x^2-4x+8-5=\\12x^2-4x+3

Our answer is 12x^2-4x+3

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A cube has a volume of 512 cubic mm. If all sides of the cube ae divided by 4, what will the resulting volume be?
kotegsom [21]
Volume of a cube = s³ 

Therefore, s³ = 512, meaning that s = 8.

The question asks what the resulting volume would be if all sides of the cube were divided by 4.

The current side measures 8, and we know that 8/4 = 2.

Thus, the resulting volume = s³ = 2³ = 8 cubic mm.
6 0
3 years ago
Hurry i'll give brainiest if u help me
galben [10]
X^2 = b^2-c^2
x^2= sqrt117^2-6^2
x^2=sqrt117×sqrt117-36
x^2=117-36
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6 0
3 years ago
The area of a rectangle is 42 square millimeters. The length is 7 millimeters. What is the perimeter of the rectangle?
Aleks [24]

Answer:

26 mm

Step-by-step explanation:

A=wl= 42 mm²

l=7, w= 42/7= 6 mm

P=2(l+w)= 2(7+6)= 26 mm

8 0
4 years ago
Which numbers are arranged in order from least to greatest?
Sidana [21]
The last answer is correct
8 0
3 years ago
Read 2 more answers
Write an equation for the sentence. The product of some number and five is added to seven to give a total of twenty-three.
neonofarm [45]

Hello!

We could write this equation as shown below.

5x+7=23

As you can see, your answer will be D) 5x+7=23

I hope this helps!

5 0
3 years ago
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