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2 years ago

What is 9 squared?

Mathematics

1 answer:

Evgen [1.6K]2 years ago

6 0

Answer:

The squared root of 9 is 3

Why - Half of 9 is 3

Why do we called this squared - It is the positive solution of the equation x2 = 9. The number 9 is a perfect square.

5 Cubed is equal to 125

Why - The number 125 on prime factorization gives 5 × 5 × 5. On combining the prime factors in groups of 3 gives 5

Why do we call this cubed = The cube of a number is that number times itself times itself. 5 cubed, denoted 53, is equal to 5×5×5, or 125.

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3 years ago

Simplify the given equation.

Ede4ka [16]

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Part 1) $4-7x=15$

The value of x is $-\frac{11}{7}$

Part 2) $x=27$

Step-by-step explanation:

Part 1) Simplify the given equation

we have

$6 - (3x + 10)+4(2 - x)=15$

In the left side, remove the parenthesis and apply the distributive property

Remember that

$(-1)(+1)=-1\\(-1)(-1)=+1$

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$6 -3x-10+8-4x=15$

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$x=-\frac{11}{7}$

Part 2) Solve for x.

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$5x+5=4x+32$

Group terms that contain the same variable

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