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3 years ago

What numbers are 3 units away from -1 on a number line?

Mathematics

1 answer:

Liono4ka [1.6K]3 years ago

8 0

2 Would be your answer if the units are positive.

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On a spelling test, Marcy got 15% of the questions incorrect. If there were 40 questions on the spelling test, than how many que

marissa [1.9K]

Answer:

Step-by-step explanation:

Marcy got 15% of the 40 wrong

.15 *40

If she got 6 wrong, then she got the rest right

40-6 = 34

She got 34 right

4 0

3 years ago

(a) An angle measures 86 degrees . What is the measure of its supplement?

Molodets [167]

Answer:

The supplement is 94

Step-by-step explanation:

Supplementary angles add to 180 degrees

Let x be the supplementary angle

x+86 = 180

Subtract 86 from each side

x+86-86 =180-86

x = 94

3 0

3 years ago

Read 2 more answers

An order form from least to greatest with these numbers 2.07,2 an 7/10,2.67 -2.67

olganol [36]

Answer:

Step-by-step explanation:

-2.67

7/10

2.67

2.07,2

4 0

3 years ago

A software company decided to conduct a survey on customer satisfaction. Out of 564 customers who participated in the online sur

nikklg [1K]

Answer:

$z=\frac{0.0904 -0.1}{\sqrt{\frac{0.1(1-0.1)}{564}}}=-0.760 \approx -0.8$

$p_v =2*P(z$

Step-by-step explanation:

Information given

n=564 represent the sample selected

X=51 represent the number of people who rated the overall services as poor

$\hat p=\frac{51}{564}=0.0904$ estimated proportion of people who rated the overall services as poor

$p_o=0.1$ is the value to compare

z would represent the statistic

Hypothsis to analyze

We want to analyze if the proportion of customers who would rate the overall car rental services as poor is 0.1, so then the system of hypothesis are:

Null hypothesis: $p=0.1$

Alternative hypothesis: $p \neq 0.1$

The statistic for a one z test for a proportion is given by:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

Replacing the info given we got:

$z=\frac{0.0904 -0.1}{\sqrt{\frac{0.1(1-0.1)}{564}}}=-0.760 \approx -0.8$

And the p value since we have a bilateral test is given b:

$p_v =2*P(z$

3 0

3 years ago

nikitadnepr [17]

Answer:

$46

Step-by-step explanation:

40(0.15) = 6 (this is the amount of the tip)

40 + 6 = 46 (add the tip to the bill)

7 0

3 years ago