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motikmotik
2 years ago
9

Please need help 20 points

Mathematics
1 answer:
Debora [2.8K]2 years ago
8 0

Step-by-step explanation:

90+48=138

180-138=42

y=42

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Follow these steps and you should get your answer its not the same questions but it should help
The answer to the problem is as follows:

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<span>5x^2 + 3x + 5
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7 0
3 years ago
The mass of a proton is approximately 1.67 x 10−24, and the mass of an electron is approximately 9.11 x 10−28. Find the approxim
nataly862011 [7]

Answer:

≈ 1833

Step-by-step explanation:

To find ratio of proton mass to electron mass, we have to divide.

The numbers are given in <em>scientific notation</em>.

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\frac{1.67*10^{-24}}{9.11*10^{-28}}\\=(\frac{1.67}{9.11}*10^{-24--28})\\=0.1833*10^4

This means we can find the number by taking 4 decimal places to the right, so that would becomes:

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7 0
3 years ago
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saveliy_v [14]

Answer:

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Dividing both sides by 0.025

\frac{0.025x}{0.025}=\frac{1.60}{0.025}

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∴ Price of Caleb's groceries before tax = $64

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3 years ago
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Yakvenalex [24]

Answer:

(6,-6)

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(6,-6)

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