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Dahasolnce [82]
3 years ago
11

Simplify each expression Justify each step

Mathematics
1 answer:
Andrei [34K]3 years ago
8 0
Answers
remove the ( ) fast and then add the numbers that look the same.
(22+19b)+7
22+19b+7
22+7+19b
= 29+19b

18+(5+6m)
18+5+6m
= 23+6m

here u don't care about same or not same u just multiply or divide
11s(4)
= 44s

10y(7)
= 70y

(9+31+5)(7times5)times4)
(45)(35)4
(1575)4
= 6300
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Two similar triangles have have areas of 75 m2 and 12 m2. find the ratio of the perimeters
soldi70 [24.7K]

we know that having similar triangles so the ratio of sides,area and volume are same.

s/s=s^2/s^2

we know that s^2 will be the area of triangle.

s^2/s^2=75/12

so s/s=\sqrt{75/12}

so the ratio of the perimeter of two triangles will be

(s+s+s)/(s+s+s)=(\sqrt{75} +\sqrt{75} +\sqrt{75} )/(\sqrt{12}+\sqrt{12} +\sqrt{12} )

ratio of the perimeter=\sqrt{225} /\sqrt{36}

8 0
3 years ago
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What is the value of x in the equation 1,331x3 − 216 = 0?
algol [13]
In solving for the value of x in the equation 1331x^3 - 216 = 0, the steps are shown below:

1331x^3 - 216 = 0
(1331x^3 = 216) / 1331
x^3 = 216/1331
x = cube root (216/1331)
x = 6/11

Therefore, the value of x in the equation is 6/11.
Hope yhis helps
4 0
3 years ago
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Look I have like barely any points can someone help answer this tho
MariettaO [177]

Answer:

3.5

Step-by-step explanation:

These are similar triangles.

BC:AC = BD:AD

6:5  is the ratio.

Then, simply multiply:

4.2 x 5/6 = 3.5

So, x = 3.5!

5 0
3 years ago
QUICKLY HELP ME PLSSSSS
joja [24]

Answer:

479

Step-by-step explanation:

342=2 portions

171=1 portion

2+5=7 portions in total

171 times 7=479

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7 0
2 years ago
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Which of the following phrases are inequalities?
aev [14]

Answer:

B, C, and D

Step-by-step explanation:

They have an either a less than sign ( < ) or a greater than sign ( > ).

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3 years ago
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