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Arte-miy333 [17]

3 years ago

14

jonathan bought a new computer for $2,016, using the electronics store's finance plan. he will pay $112 a month for 18 months. w

hich equation can jonathan use to find out how much money he still owes after each month of the plan?

1 answer:

vekshin13 years ago

6 0

Y - the money he still owes,
x - the number of months ( from x = 0 to x = 18 ):
y = 2,016 - 112 x

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Galina-37 [17]

Answer:

59.7

Step-by-step explanation:

you divide 39.80 by 10

then times it with 15 and get your answer

7 0

3 years ago

Write the equation of a Line that is perpendicular to y=5/2x+3 and passes

koban [17]

Answer:

Step-by-step explanation:

Slope of perpendicular lines = -1

y = 5/2x + 3

$m_{1}=\frac{5}{2}\\\\m_{1}*m_{2}=-1\\\\$

$m_{2}=$ -1 ÷ $m_{1}$

= $-1*\frac{2}{5}=\frac{-2}{5}$

(-3 , -5)

Equation of the required line: y - y₁ = m(x -x₁)

y - [5] = $\frac{-2}{5}(x - [-3])\\$

$y+5=\frac{-2}{5}x + 3*\frac{-2}{5}\\\\y+5=\frac{-2}{5}x-\frac{6}{5}\\\\ y =\frac{-2}{5}x-\frac{6}{5}-5\\\\ y = \frac{-2}{5}x-\frac{6}{5}-\frac{5*5}{1*5}\\\\ y = \frac{-2}{5}x-\frac{6}{5}-\frac{25}{5}\\\\\\ y=\frac{-2}{5}x-\frac{31}{5}$

5 0

4 years ago

Ms. miller decides to give a test worth 90 points and contains 25 questions. multiple-choice questions are worth 3 points and wo

schepotkina [342]

X= # of multiple choice questions
y= # of word problem questions

EQUATION 1:
x + y= 25

EQUATION 2:
3x + 4y= 90

STEP 1:
solve for one variable in equation 1

x + y= 25
subtract y from both sides
x= 25 - y

STEP 2:
substitute x=25-y in equation 2

3x + 4y= 90
3(25-y) + 4y= 90
75 - 3y + 4y= 90
75 + y= 90
subtract 75 from both sides
y= 15 word problems

STEP 3:
substitute y value to find x

x + y= 25
x + 15= 25
x= 10 multiple choice questions

ANSWER: There are 15 word problems and 10 multiple choice questions.

Hope this helps! :)

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