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4 years ago

Multiply or divide two quantities by the same number is called what?

Mathematics

1 answer:

erma4kov [3.2K]4 years ago

8 0

Scaling. In this process you would multiply both by the same number to create an equal ratio between the two numbers.

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Solve y=-3x² + 4.5x – 20<br> Use the Quadratic formula

statuscvo [17]

Answer:

$x=0.75 \pm 2.47067i$

Step-by-step explanation:

Quadratic Formula: $x=\frac{-b \pm \sqrt{b^2-4ac} }{2a}$

√-1 is imaginary number i

Step 1: Define

y = -3x² + 4.5x - 20

a = -3

b = 4.5

c = -20

Step 2: Substitute and Evaluate

$x=\frac{-4.5 \pm \sqrt{4.5^2-4(-3)(-20)} }{2(-3)}$

$x=\frac{-4.5 \pm \sqrt{20.25-240} }{-6}$

$x=\frac{-4.5 \pm \sqrt{-219.75} }{-6}$

$x=\frac{-4.5 \pm \sqrt{219.75}(\sqrt{-1} ) }{-6}$

$x=\frac{-4.5 \pm i\sqrt{219.75} }{-6}$

$x=\frac{4.5 \pm i14.824 }{6}$

$x=0.75 \pm 2.47067i$

7 0

3 years ago

Write an expression for “5 more pounds than joe”

LenKa [72]

Answer:

x+5

Step-by-step explanation:

Since you don't know how much Joe weighs, you can express his weight as x. Then, you add on 5 because you have 5 more lbs than joe (which is x).

3 0

3 years ago

What is another expression that is equivalent to 12-16x

sergij07 [2.7K]

4(3-4x) . This is solved by factoring a 4 out of the equation. Distributing the 4 in the answer will provide the same equation as the one questioned.

5 0

3 years ago

What is the mean set of numbers -3, -2,0,3,17

Elan Coil [88]

I think its 2

Just give me a like

6 0

3 years ago

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What is the quotient of 36 divided by 3/4??

Harlamova29_29 [7]

36 divided by 3/4 is 48

4 0

4 years ago

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