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svlad2 [7]
3 years ago
11

Plz help me so yeah I rly don't get this

Mathematics
1 answer:
chubhunter [2.5K]3 years ago
5 0

Answer:

130

Step-by-step explanation:

The two angles add up to 180 since they form a straight line

4y-50 + 3y+55 = 180

Combine like terms

7y +5 = 180

Subtract 5 from each side

7y-5+5 = 180-5

7y = 175

Divide each side by 7

7y/7 =175/7

y =25

The obtuse angle  is greater than 90 degrees

3y+55

3(25) +55

75+ 55

130

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How many times larger is 8*10^6 than 2*10^2
bogdanovich [222]
The first step for solving this question is put both of your given expressions into one and then subtract them. This will look like the following:
8 × 10^{6} - 2 × 10²]
Now to make the calculation easier,, factor the expression.
(8 × 10^{4} - 2) × 10²
Evaluate the power inside the parenthesis.
(8 × 10000 - 2) × 10²
Evaluate the power outside the parenthesis.
(8 × 10000 - 2) × 100
Multiply the numbers inside the parenthesis.
(80000 - 2) × 100
Subtract the numbers in the parenthesis.
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Lastly,, multiply the numbers together to get your final answer.
7999800
This means that 8 × 10^{6} is 7999800 times larger than 2 × 10².
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3 years ago
If a+b=1, find N=a^3+b^3+3ab
mart [117]

Answer: 1

<u>Step-by-step explanation:</u>

a + b = 1

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a³ + b³ + 3ab = (a + b)(a² - ab + b²) + 3ab

                            ↓

                     =     1     (a² - ab + b²) + 3ab

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                                      ↓       ↓

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3 years ago
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To add 1 to another number, add 10 and then subtract 1: 1 + 10 = 9 + 10 - 1 = 19.

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Answer:

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