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3 years ago

Solve for x. a.5, b.c.9d.10

Mathematics

2 answers:

Liula [17]3 years ago

6 0

Your proportion should look something like this

$\frac{x}{6} = \frac{6}{4}$

After cross multiplication, you should end up with this equation

$4x=36$

After dividing 4 on both sides, you should get that x=9

Karolina [17]3 years ago

3 0

The Answer would be C which is 9

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Rename 3/10 and 2/3 using the least common denominator.

Charra [1.4K]

Answer:

LCD = 30

3/10 = 9/30

2/3 = 20/30

Step-by-step explanation:

This is the answer because:

1) First, the least common denominator is 30 because 10 x 3 is 30 and 3 x 10 is 30

2) Next, multiply the numerators with the same number you multiplied with the denominator

3 x 3 = 9

2 x 10 = 20

3) Therefore, the answers are:

3/10 = 9/30

2/3 = 20/30

Hope this helps!

6 0

2 years ago

What is the answer to 30% of 820

katen-ka-za [31]

Answer:

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Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

g Z-Test for Population Means Calculate z-statistic of a population mean. Keith sampled 10 private universities in Colorado and

scoray [572]

Answer: 2.46

Step-by-step explanation:

Formula for x-score is given by :-

$Z=\dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

, where $\overline{x}$ = Sample mean , $\mu$ = population mean, $\sigma$ = population standard deviation, n= sample size.

As per given , n=10

$\mu$ = $29,056

$\sigma$ = $3,339

$\overline{x}$ = $31,650

Then,

$z=\dfrac{ 31650-29056}{\dfrac{3339}{\sqrt{10}}}\\\\=\dfrac{2594}{\dfrac{3339}{3.16227766017}}\\\\=\dfrac{2594}{1055.88451073}=2.45670807142\approx 2.46$