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Ivenika [448]
3 years ago
13

81^3/4 how do i simply/?

Mathematics
1 answer:
Slav-nsk [51]3 years ago
7 0
When you have something to an exponent and the exponent is a fraction it basically means the numerator is the power of the number and denominator is the root of the number.
81^3= 531441
4 root (531441)=27
if you have a graphing or scientific calculator you should be able to enter straight in 81^(3/4).
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Solve each absolute value equation number 1 |2x-3|=7​
Dmitriy789 [7]

Answer:

x = -2,  5.

Step-by-step explanation:

|2x - 3| = 7

2x - 3 = 7

2x = 10

x = 5 or:

2x - 3 = -7

2x = -4

x = -2.

3 0
3 years ago
Rearrange the formula A = \pi r ^ ( 2) for r
tatyana61 [14]
Consider re-writing this formula as "A = pi*r^2."  The backslash symbol "\" is unnecessary.

If A = pi*r^2, and we wish to solve for r, then divide both sides by pi:

A/pi = r^2

Taking the square root of both sides,   sqrt(A/pi) = r (r must be positive in this situation).
3 0
3 years ago
a stack of bricks is 3 1/2 feet high. if each brick is 1 3/4 inches high, how many bricks are in the stack?
Pepsi [2]
The number of bricks= Total height of stack/ height of a single brick.
No. of bricks=3 1/2 ÷ 1 3/4
Convert the fractions into improper fractions;
No. of bricks= 7/2÷7/4
No. of bricks= \frac{14}{4} * \frac{4}{7}
No. of bricks= 2
6 0
3 years ago
I need you To reply To This question I need numbers 14-17
slava [35]
The area of a circle is:
\pi \times r \times r
"r" being the radius and π being 3.14
14. The diameter is 12. So, to get the radius, we would need to halve it. So, the radius would be 6.
Now we plug in 6 for r and 3.14 for π which makes it
3.14 \times 6 \times 6
which equals 113.04
15. The diameter is 9, so to get the radius we need to halve it to get 4.5
Plug in 4.5 for r and 3.14 for π and we get
3.14 \times 4.5 \times 4.5
which equals 63.585
16. The diameter is 18, so to get the radius we need to halve it to get 9
Plug in 9 for r and 3.14 for π and we get
3.14 \times 9 \times 9
which equals 254.34
17. The diameter is 8, so to get the radius we need to halve it to get 4.
Plug in 4 for r and 3.14 for π and we get

3 0
3 years ago
Given NL bisects KNM and KLM. Prove NKL equals NML
SCORPION-xisa [38]

Answer:

What question do we answer?

Step-by-step explanation:

5 0
3 years ago
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