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Masteriza [31]
3 years ago
10

Calvin is 3 years younger than Robert. Which expression below represents how old Calvin is if Robert is y years old? A. y – 3 B.

y + 3 C. 3 – y D. 3 + y
Mathematics
1 answer:
Dmitry [639]3 years ago
6 0

Answer:

A Y-3

Step-by-step explanation:

We know Robert is Y years old and Calvin is 3 years younger.  Y-3.  For example, Robert is 20, then Calvin would have to be 17.  Y=20.  20-3 = 17

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Is -7 the solution to the equation w/7 +2=-1 explain how you know
erma4kov [3.2K]

w/7 + 2 = 1

<em><u>Subtract 2 from both sides.</u></em>

w/7 = -1

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Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar. The simplest form o
sleet_krkn [62]

Answer:

x

Step-by-step explanation:

-2x²(x – 5) + x(2x² – 10x) + x

The simplest for of the above equation can be obtained as follow:

-2x²(x – 5) + x(2x² – 10x) + x

Rearrange

x(2x² – 10x) – 2x²(x – 5) + x

Factorise

x.2x(x – 5) – 2x²(x – 5) + x

2x²(x – 5) – 2x²(x – 5) + x

Carry out the minus (–) operation

=> x

Therefore, the simplest form of expressing -2x2(x – 5) + x(2x2 – 10x) + x is x.

6 0
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kari74 [83]

Given:

A circle with diameter 9 cm.

To find:

The area of the circle.

Solution:

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A=\pi r^2                   ...(i)

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We know that, the diameter of a circle is twice than its radius.

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Therefore, the area of the given circle is 63.6.

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