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3 years ago

Simplify: 7^6 ÷ 7^2 A.) 7^3 B.) 7^4 C.) 7^8 D.) 7^12

Mathematics

2 answers:

Ket [755]3 years ago

7 0

B.) 7^4

Is the correct answer

juin [17]3 years ago

6 0

7^6/7^2
(7*7*7*7*7*7)/(7*7)
the answer is b. 7^4

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C=3 c2 + 5 ..............

vaieri [72.5K]

Answer:

3x2+5=11

Step-by-step explanation:

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2 years ago

Which of the following numbers is a perfect square? 141 196 124 222

Diano4ka-milaya [45]

Answer:

The answer is 196

Step-by-step explanation:

Find the square root of each number. All numbers are decimals but 196, which is 14

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2 years ago

here are five rods a-1 a a a a+3 all measurements are in cm the total length of the five rods is l cm find a formula for l in te

Elenna [48]

Answer:

$I=5a+2$ (simplified form)

Step-by-step explanation:

I is the total length of all the 5 rods.

Each of the 5 parts lengths are $(a-1), a, a, a, (a+3)$ , respectively.

We add all of them and equate it to I:

$I=(a-1)+a+a+a+(a+3)$

Simplifying this, we take like terms and add:

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3 years ago

A cylinder has a volume of 225π inches3 . What is its height, if its radius is 10 inches?

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2 years ago

Which statement is true? Question 1 options: A) – |–13| = 13 B) – |13| = 13 C) |–13| = 13 D) |13| = – 13

ExtremeBDS [4]

Answer:

The answer is C. |-13| = 13

Step-by-step explanation:

The definition of absolute value is:

$\displaystyle \large{ |x| = \begin{cases} x \: \: (x \geqslant 0) \\ - x \: \: (x < 0) \end{cases}}$

To say it simply, any real numbers in absolute sign, when evaluated, they will always be positive.

No matter the positive real numbers or negative real numbers - if these numbers are in absolute sign, they will be evaluated to positive.

Examples

$\displaystyle \large{ |2| = 2} \\ \displaystyle \large{ | - 2| = 2} \\ \displaystyle \large{ | - 8| = 8}$

But if the negative is not inside the absolute sign.

Examples II

$\displaystyle \large{ - |2| = - 2} \\ \displaystyle \large{ - | - 2| = - 2} \\ \displaystyle \large{ - | - 8| = - 8}$

First, we evalute the absolute value first. We know thay any real numbers in absolute sign will become positive. Next, after evaluating the absolute value, we simply add the negative symbol beside the positive number.

Simplified Definition

This one is to make it simple to remember.

$\displaystyle \large{ |a| = a} \\ \displaystyle \large{ | - a| = a} \\ \displaystyle \large{ - |a| = - a} \\ \displaystyle \large{ - | - a| = - a}$

After reading the explanation, see the choices and tell if they are true or not.

The A choice is wrong as we know that -|-13| is -13.

The B choice is wrong, the reason is same as the A choice.

The C choice is correct! Any real numbers in absolute sign are always positive.

The D choice is wrong because absolute-value numbers cannot be negative, refer to the C choice's reason.

Let me know if you have any questions!

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2 years ago