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2 years ago

Given that R=2x+9y Find x when y=3 and R=13.

Mathematics

1 answer:

german2 years ago

6 0

R = 2x + 9y [ Given ]

When,

y = 3

R = 13

★ Substituting the values in the above equation

=> 13 = 2x + 9 × 3

=> 13 = 2x + 27

=> 13 - 27 = 2x

=> -14 = 2x

=> x = -14/2

=> x = -7

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Write an equivalent algebraic equation for the sentence below.

tatuchka [14]

Answer:

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Step-by-step explanation:

x-7= 13

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2 years ago

Use proportion to find the answer.

prisoha [69]

Answer

$\boxed {64}$

Detailed Explanation

Let's set up a proportion.

$\frac{3}{4.8} = \frac{40}{x}$

Now that we have set up a proportion we would need to cross multiply.

3*x=3x

40*4.8= 192

Solve for x

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$\frac{192}{3} = 64$

Therefore, the answer would be 64.

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2 years ago

Tim Worker wants to purchase an automobile warranty costing $856. If he chooses to make 12 equal payments, then in dollars and c

Svetlanka [38]

Answer:

$71.33

Step-by-step explanation:

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So, we need to divide $856 over 12

So, the average payment = 856/12 = $71.33

3 0

3 years ago

7.8 as a mixed number in simplest form

Goryan [66]

7 4/5

( 7 and 4 fifths)

8 0

2 years ago

Simplify the polynomial (3a^2+4a+25) - (2a^2+4a-5)

nignag [31]

Answer:

The polynomial simplified would be a^2 + 30

I hope this helps you:))

P.S. Might I recommend a good online calculator for these types of problems. It's called Symbolab. I use it every day and it's a lifesaver. It shows the step-by-step and has a plethora of different actions like simplifying, inverse, and line.

6 0

2 years ago