2 years ago

Solve the system of equations by substitution y = 2x - 4 7x - 2y = 5

Mathematics

2 answers:

denis-greek [22]2 years ago

7 0

Answer:

Point form: ( -1 , -6)

Equation form: x= -1 , y= -6

u should mark brainliest ;)

Amanda [17]2 years ago

3 0

3x + 4 ,, hope i helped !!

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vovikov84 [41]

Answer:

3 cm

Step-by-step explanation:

First, find the volume of the cone.

V = $\frac{1}{3}$ $\pi$ r²h

V = $\frac{1}{3}$ (3.14)(9)(12)

V = 113.04

This means the sphere is also 113.04

Use the formula V = $\frac{4}{3}$ $\pi$ r³

113.04 = $\frac{4}{3}$ (3.14)r³

113.04 = 4.19r³

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3 years ago

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A tv has height ratio 3:4. In a scale drawing the height is 4.5cm what would the width be?

Amanda [17]

4.5 ÷ 3 = 1.5
This means that the ratio has increased by 1.5

Since anything multiplied on one side of a ratio has to be multiplied on the other side too, we multiply 1.5 by 4:
1.5 X 4 = 6

The width would be 6cm

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3 years ago

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Ierofanga [76]

The answer is 3 and 9.

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2 years ago

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galina1969 [7]

Answer:

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Step-by-step explanation:

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2 years ago

write an equation in y=mx+b for a line that passes through (3,-4) & has a slope of -3. you can write it in point-slope and c

dedylja [7]

Y = -3x + b
Plug in point
-4 = -3(3) + b
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3 years ago

Solve the system of equations by substitution y = 2x - 4 7x - 2y = 5​

Solve the system of equations by substitution y = 2x - 4 7x - 2y = 5