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3 years ago

When you divide fractions you should

2 answers:

7 0

Kcf=keep the first fraction; change the division sign to a multiplication sign and flip the last fraction so that it is the reciprocal and multiply to get your answer

quester [9]3 years ago

4 0

Flip the second fraction, and then multiply them. when you do that, simplify the total, and you got your answer

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7. Solve |3x – 2| = |x + 1|

Vladimir [108]

2x -2 =1

2x = 3

x =1.5

5 0

4 years ago

Help again?????????????

vesna_86 [32]

Answer:

The answer is D

5 0

3 years ago

The angle measure of a triangle is shown in the diagram, what is Twh value of x?

seropon [69]

Answer:

$x = 28$

Step-by-step explanation:

$50 + (2x) + (3x - 10) = 180$

$180-50=130$

$(2x) + (3x - 10) = 130$

$5x - 10 = 130$

$5x = 130 + 10$

$5x = 140$

$\frac{5x}{5} = \frac{140}{5}$

$x= \frac{140}{5}$

$x = 28$

6 0

3 years ago

A count went up from 450 to 600. What was the approximate percent increase?

navik [9.2K]

You answer is A 33% .

5 0

3 years ago

Read 2 more answers

A company claims that less than 10% of adults own a smart watch. You want to test this claim, and you find that in a random samp

Nezavi [6.7K]

Answer:

Test statistic is 0.67

Critical value is -2.33

Step-by-step explanation:

Consider the provided information.

The formula for testing a proportion is based on the z statistic.

$z=\frac{\hat p-p_0}{\sqrt{p_0\frac{1-p_0}{n}}}$

Were $\hat p$ is sample proportion.

$p_0$ hypothesized proportion and n is the smaple space,

Random sample of 100 adults, 12% say that they own a smart watch.

A company claims that less than 10% of adults own a smart watch.

Therefore, n = 100 $\hat p$ = 0.12 , $P_0$ = 0.10

$1 - P_0 = 1 - 0.10 = 0.90$

Substitute the respective values in the above formula.

$z=\frac{0.12-0.10}{\sqrt{0.10\frac{0.90}{100}}}$

$z\approx 0.67$

Hence, test statistic = 0.67

This is the left tailed test.

Now using the table the P value is:

P(z < 0.667) = 0.7476

P-value = 0.7476

$\alpha = 0.01$

Here, P-value > α therefore, we are fail to reject the null hypothesis.

$Z_{\alpha}= Z_{0.01} = -2.33$

Hence, Critical value is -2.33

7 0

3 years ago