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bixtya [17]
3 years ago
5

What is the value of a?

Mathematics
1 answer:
kolezko [41]3 years ago
8 0

Answer:

180-(4a+32)=48-4a

(142-4a)+39+(a+41)=180

-4a+a=180-142-39-41

-3a= -48

a=-48/-3

a=16

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When using substitution to solve this system of equations, what is the result of the first step?
Allushta [10]

Answer:

The method of solving "by substitution" works by solving one of the equations (you choose which one) for one of the variables (you choose which one), and then plugging this back into the other equation, "substituting" for the chosen variable and solving for the other. Then you back-solve for the first variable.

Step-by-step explanation:

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3 0
2 years ago
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Derek's car has run out of gasoline. He walks 24 km west and then 10 km south looking for a gasoline station. If he is now h km
Juliette [100K]

Answer:

the value of h is √676km

Step-by-step explanation:

The computation of the value of h is shown below

Here we apply the Pythagoreus theorem

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6 0
3 years ago
What is the slope of the line through (3,2) and (-3,4)?
NISA [10]

Answer:

slope = - \frac{1}{3}

Step-by-step explanation:

calculate the slope m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (3, 2 ) and (x₂, y₂ ) = (- 3, 4 )

m = \frac{4-2}{-3-3} = \frac{2}{-6} = - \frac{1}{3}

3 0
2 years ago
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<img src="https://tex.z-dn.net/?f=3%28y%20-%209%29%20%3D%2030" id="TexFormula1" title="3(y - 9) = 30" alt="3(y - 9) = 30" align=
Ira Lisetskai [31]

Answer:

y=19

Step-by-step explanation:

3(y - 9) = 30

3y - 27 = 30

       3y = 30 + 27

       3y = 57

         y = 19

brainliest?

4 0
3 years ago
HELP ME PLEASE GUYS THANKS!
Lostsunrise [7]

The answer is in the image:

8 0
2 years ago
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