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olganol [36]
2 years ago
9

Is this graph proportional?

Mathematics
1 answer:
LenKa [72]2 years ago
3 0

Answer:

Yes it is. becaus its even

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The sum of a number and 5 times a second number is represented by the equation a+5b=19 . The sum of half of the first number and
TiliK225 [7]
Here you have a system of 2 equations and 2 unknowns. An easy way to solve this type is to isolate one of the variables.

12a + 2b = 8
2b = 8 - 12a
b =
b =  \frac{8 - 12a  }{2}
b = 4 - 6a

Now plug 4 - 6a into equation 1 to solve for a.

a + 5(4 - 6a) = 19

a + 20 - 30a = 19

-29a = -1

a = 1/29 (answer)

Now plug a into the equation for b

b= 4 - 6(1/29)

b= 110/29 (answer)
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3 years ago
Someone help me on 103 pls
Vlad [161]

Answer:

it is A

27000

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2 years ago
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Julia lined up the interior angles of the triangle along the line below. <br> What is the answer?
pshichka [43]

30 degrees is your answer.

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2 years ago
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Solve x2+12x=-11 by completing the square . Which is the the solution set of the equation?
Dmitriy789 [7]

Answer:

{- 11, - 1 }

Step-by-step explanation:

Since the coefficient of the x² term is 1 , to complete the square

add (half the coefficient of the x-term )² to both sides

x² + 2(6)x + 36 = - 11 + 36 ← complete the square on the left side

(x + 6)² = 25 ( take the square root of both sides

\sqrt{(x+6)^2} = ± \sqrt{25}

x + 6 = ± 5 ( subtract 6 from both sides )

x = - 6 ± 5

x = - 6 + 5 = - 1 or x = - 6 - 5 = - 11




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3 years ago
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The measure of angle A
wariber [46]

Answer:

A. Measure of angle A + measure of angle B

Step-by-step explanation:

Because angle 4 is an exterior angle of given triangle which will be equal to the Measure of angle 2 + measure of angle 3

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