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r-ruslan [8.4K]
3 years ago
13

I need help with these questions,i'll give 76 point to whoever answers them​

Mathematics
2 answers:
Harman [31]3 years ago
7 0

Answer:

1, 4 complementary

2, 3 supplementary

5, 6 neither

Step-by-step explanation:

complementary angles are angles in which the sum of both is equal to 90 degrees. supplementary angles are angles in which their sum is equal to 180 degrees.

hope that helps

Verizon [17]3 years ago
5 0

Answer:

1,4, and 8 are complementary, 2,3, and 6 are supplementary, and 5 and 7 are neither

Step-by-step explanation:

complementary = add up to 90

supplementary = add up to 180

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Step-by-step explanation:

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salantis [7]

Hi!

We can see the river is a straight line.

This means that the angles that fall upon it are supplementary angles, and will add up to 180 degrees.

Therefore:

x+2x+21=180

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3x+21=180

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Elanso [62]

Answer:

Q1) (x+7)² = 9

x = -10, -4

Q2) (x-8)² = 144

x = -4, 20

Q3) (x-1)² = 81

x = -8, 10

Step-by-step explanation:

Q1) x² + 14x + 49 = 9

x² + 2(x)(7) + 7² = 9

(x + 7)² = 9

x + 7 = +/- sqrt(9)

x + 7 = 3

x = -4

x + 7 = -3

x = -10

Q2) x² - 16x + 64 = 144

x² - 2(x)(8) + 8² = 144

(x - 8)² = 144

x - 8 = +/- sqrt(144)

x - 8 = 12

x = 20

x - 8 = -12

x = -4

Q3) x² - 2x + 1 = 81

x² - 2(x)(1) + 1² = 81

(x - 1)² = 81

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x = 10

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Answer:

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Step-by-step explanation:

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Afina-wow [57]

Answer:

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Step-by-step explanation:

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y  related to x

y =  2 * (x + 1)

y/(x + 1) = 2  

2 is the constant of proportionality

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3 years ago
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