All categories

3 years ago

. What is the solution set for this inequality? -3r+5<-7 please answer quickly!

Mathematics

1 answer:

irinina [24]3 years ago

4 0

Answer:

r>4

Step-by-step explanation:

-3r+5<-7

-3r+5-5 <-7-5

-3r<-12

-3r/3

12/3

r>4

You might be interested in

Scores on a dental anxiety scale range from 0 (no anxiety) to 20 (extreme anxiety). The scores are normally distributed with a

solniwko [45]

Answer:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

Step-by-step explanation:

The following information is missing in the question:

We have to find z-score for the given score on this dental anxiety scale: 12, 6

We are given the following information in the question:

Mean, μ = 11

Standard Deviation, σ = 4

We are given that the distribution of score is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

where x is the given score on this dental anxiety scale.

For x = 12

$z_{score} = \displaystyle\frac{12-11}{4} = 0.25$

For x = 6

$z_{score} = \displaystyle\frac{6-11}{4} = -1.25$

6 0

3 years ago

A restaurant owner installed a new automated drink machine. The machine is designed to dispense 530 mLof liquid on the medium si

lidiya [134]

Answer:

a.H0: μ =530mL vs. Ha: μ > 530mL

Step-by-step explanation:

-A hypothesis test will be used to provide evidence that the median is more or equal to the stated median value.

#In a normally distributed population, the mean=mode=median:

$Mean=Mode=Median=\mu$

-The null hypothesis states that the median is equal to the stated value:

$H_o:\mu=530 \ mL$

-The alternative hypothesis provides evidence that the median value is greater than the stated value:

$H_a:\mu>530\ mL$

Hence, the correct hypotheses are H0: μ =530mL vs. Ha: μ > 530mL

6 0

3 years ago

Find angle V and explain why

ziro4ka [17]

V= 50 degrees

This is because the line on which the angle 70 is at adds up to 180 and it we subtract 70 from the straight angle we have 110 degrees that means the other angle on the other side of the 70 is 110 so if we add 110 and 20 we get 130 and since all angles of a triangle add up to 180 we subtract 130 from 180 and get 50

8 0

3 years ago

Tickets to the school play cost $9. The Wilson family bought 5 tickets. What was the total cost of the tickets?

Svetllana [295]

Answer:

$45

Step-by-step explanation:

One ticket costs $9

They bought 5 tickets

9*5=45

5 0

2 years ago

Read 2 more answers

The volume of a rectangular prism is 72 in3. If the height is 6 inches and the width is 3 inches, what is the length?

stellarik [79]

Answer:

Step-by-step explanation:

Volume= length*width*height

72=Length*3*6

72=Length*18

divide by 18 both sides to get Length=4 inches

8 0

2 years ago