3 years ago

128 is 74% of what number?

2 answers:

8 0

74% means 0.74
"of" means "times"

So, 128 = 0.74 times (the number)

Divide each side of this equation by 0.74 :

128/0.74 = the number

172.973 (rounded) = the number

mr Goodwill [35]3 years ago

5 0

The answer is in the attachment below.

You might be interested in

The National Assessment of Educational Progress (NAEP) gave a test of basic arithmetic and the ability to apply it in everyday l

mylen [45]

Answer:

a) 2.0702

b) 2.07

Step-by-step explanation:

Given:

Sample, n = 840

standard deviation, σ = 60

a) The standard deviation of the sampling distribution, will be:

$= \frac{\sigma}{\sqrt{n}}$

$= \frac{60}{\sqrt{840}}$

= 2.0702

Standard deviation of the sampling distribution is 2.0702

b) According to the 68 part of the 68-95-99.7 rule, 68% of all values of x fall within 1 standard deviation on either side of the unknown mean μ.

Therefore, missing number will be:

$1 * [\frac{\sigma}{\sqrt{n}}]$

= 1 * 2.0702

= 2.0702 ≈ 2.07

6 0

3 years ago

Which of the following shows the extraneous solution(s) to the logarithmic equation? log4 (x) + log4(x - 3) = log4 (-7x + 21)

Salsk061 [2.6K]

First join the log4 on the left:

log4( x*(x-3) = log4(-7x+21)

Then x = -7, works: -7*(-10)=70 = -7*(-7)+21

x=-3, 18 = 42, does not work

x=3 0=0 works,

However, when one puts x = -7 in the *original* exression, log4(-7) or log4(-10) do not exist (you know why?). So x= -7 is extraneous.

Now x=3 gives log4(0) on the left and right, which does not exist.

So, C is the answer, both are extraneous. Seem to work but indeed don't work in the *original* equation

6 0

3 years ago

Read 2 more answers

A {1,2,3,4} B {2,4,9,16} C {1,2} D {1,2,3,4,9,16}

MaRussiya [10]

Answer:

Step-by-step explanation:

The range of the function consists of the set of output values ( on the right).

So its {2 4 9 16}

7 0

3 years ago

Read 2 more answers