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3 years ago

Fifteen times the square of a non-zero number is equal to 20 times number.

Mathematics

2 answers:

Paladinen [302]3 years ago

5 0

15 * x^2 = 20x

that's what the question discribed.
now solve for x

x = 4/3

STatiana [176]3 years ago

4 0

Let the number be x

15 × x² = 20 × x
⇒ 15x² = 20x
⇒ 15x² / x = 20
⇒ 15x = 20
⇒ x = 20/15
⇒ x = 4/3

The number is 4/3

Hope it helps!

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Find the first 4 terms in each sequence

koban [17]

Answer:

a₁ = -21 (Given)

a₂ = -28

a₃ = -35

a₄ = -42

Step-by-step explanation:

First term a₁ = -21 (Given)

…………………………………

Second term a₂ :

a₂ = $a_{2-1} - 7\\a_{1} - 7\\a_{1} = -21\\-21 - 7 = -28$

…………………………………

Third term a₃ :

a₃ = $a_{3-1} - 7\\a_{2} - 7\\a_{2} = -28\\-28 - 7 = -35$

…………………………………

Fourth term a₄ :

a₄ = $a_{4-1} - 7\\a_{3} - 7\\a_{3} = -35\\-35 - 7 = -42$

5 0

2 years ago

Solve 20x+ 5y = 15 for y.

Nesterboy [21]

20x+ 5y = 15

Move 20x to the other side. Sign changes from +20x to -20x

20x-20x+5y=-20x+15

5y=-20x+15

Divide both sides by 5

5y/5=y ( Cross out 5 and 5, divide by 5, 1*1*y=y)

-20/5=-4x

15/5=3

y=-4x+3 or y=3-4x

Answer: y=-4x+3 or y=3-4x

5 0

3 years ago

You purchased $132.49 worth of wheels and bearings for your skateboards. The shop charges $15 per board to install them. The tot

Thepotemich [5.8K]

Answer:

Step-by-step explanation:

192.49-132.49=60

60÷15=4

5 0

3 years ago

Read 2 more answers

3x+4y+z=-2<br> 2y+3z=-8<br> z=-3

masya89 [10]

Answer:

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3 0

2 years ago

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Stels [109]

Answer:

Step-by-step explanation:

1. You can use the intercepts to graph the line. The graph of 2x + 3y = 12 crosses the x-axis at (6, 0), so its x-intercept is 6. The graph of 2x + 3y = 12 crosses the y-axis at (0, 4), so its y-intercept is 4.

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Standard Form: ax + by = c

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y = (-5/2)x + 25 + 2

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5 0

2 years ago