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3 years ago

3x+y=8, 2x+4y=12 (system of equations)

Mathematics

1 answer:

Anvisha [2.4K]3 years ago

4 0

Answer:

(2,2)

Step-by-step explanation:

If you have any questions about the way I solved it, don't hesitate to ask

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What are the zero/intercepts of the equations (x+7)(x-2)=0

umka21 [38]

Answer:

The answer would be 2.5x+8x6y

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3 years ago

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Step-by-step explanation:

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2 years ago

What is the slope of a line perpendicular to the line whose equation is 15x+18y=270. Fully simplify your answer.

In-s [12.5K]

Answer:

6/5

Step by step explanation:

Here we are provided with a equation which is ,

$\longrightarrow 15x + 18y = 270$

And we are interested in finding the slope of the line which is perpendicular to the given line. We may rewrite the equation as ,

$\longrightarrow 18y = -15x +270\\$

$\longrightarrow y =\dfrac{-15x+270}{18}\\$

$\longrightarrow y =\dfrac{-15}{18}x +\dfrac{270}{8}\\$

$\longrightarrow y =\dfrac{-5}{6}x +\dfrac{135}{4}$

Recall the slope intercept form of the line which is y = mx + c .On comparing to which we get ,

$\longrightarrow m =\dfrac{-5}{6}$

Again , recall that product of slopes of two perpendicular lines is -1. So that ,

$\longrightarrow m_{\perp} =-\bigg(\dfrac{1}{m}\bigg)$

Hence ,

$\longrightarrow\underline{\underline{ m_{\perp}= \dfrac{6}{5}}}$

And we are done !

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3 years ago

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On the sale of a $36,000 truck, Brad will make a 1.05% commission. How much will he make for commission? (serious answers only)

alukav5142 [94]

Answer:

$36,000 x 1.05% = $378

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3 years ago

How much will a person pay for 8.2 pounds of bananas at a price of $2.46 per pound?

kati45 [8]

Answer:

$19.99

Step-by-step explanation:

1 lb = 16 oz

8.2 lb = (16 x 8) +2= 130

$\frac{16}{2.46} =\frac{1}{x}$ ---> x = $0.154 per oz

0.154 x 130 = $19.99

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3 years ago

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