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Mazyrski [523]
3 years ago
6

HELP ASAP ASAP PLEASE

Mathematics
2 answers:
Harlamova29_29 [7]3 years ago
4 0

Answer:

16

Step-by-step explanation:

20^2-12^2=256

400-144=256

sqrt 256 = 16

Yuki888 [10]3 years ago
3 0
Answer is 16 hope this helps
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What is the value of (6a-2)
DanielleElmas [232]
It totally depends on the value of 'a', and if 'a' changes, then (6a-2) immediately changes too. Whatever 'a' is at the moment, (6a-2) is 2 less than 6 times 'a'.
7 0
3 years ago
That is, what is the 142nd odd number?​
Kitty [74]

Answer and step-by-step explanation:

I believe it is 287. I am not entirely sure, but I believe that is the answer.

4 0
3 years ago
The length of time a person takes to decide which shoes to purchase is normally distributed with a mean of 8.54 minutes and a st
Minchanka [31]

Answer:

0.0323 = 3.23%. Is unusual

Step-by-step explanation:

Using the normal distribution we can find z value with the mean and standard deviation as follows. x is the value we want to know its probability

z = (x - mean)/standard deviation

z = (5-8.54)/1.91

z = -1.85

Using z tables for normal distribution, for z = 1.85, we have an area under the curve of 0.9677. Since we want to know the probability for 5 minutes or less, we have to substract from

p = 1- 0.9677

p = 0.0323

An event with a probability less than 5% is considered unusual.

8 0
3 years ago
One number is 6 more than another. Twice the larger number is 5 times the smaller.
tresset_1 [31]

Answer:

The smaller number is 4

Step-by-step explanation:

Larger number = x

Smaller number = y

Write 2 equations

y + 6 = x

2x = 5y

Substitute x in the first equation to the second equation

2(y + 6) = 5y

Multiply 2(y + 6)

2y + 12 = 5y

Subtract 2y from both sides of the equation

12 = 3y

Divide both sides of the equation by 3

y = 4

x = y + 6 = 4 + 6 = 10

The smaller number is 4

Hope this helps :)

3 0
3 years ago
Perry spent $22.50 on material to make necklaces. He used all of the material and made 15 necklaces. How much should Perry charg
Vika [28.1K]

Answer:

Guys his answer is wrong. It’s 5.50 in edg

Step-by-step explanation:

5 0
3 years ago
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