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zlopas [31]
3 years ago
10

PLEASE HELP WILL GIVE BRANLIEST!! The question is “ Abbey spends 5 hours less then triple the amount of time Emily spends on hom

ework. Nathan spends twice as much time on homework as Abbey does. Write a simplified expression for the total number of hours the three friends spend on their homework. Show your work.”
Mathematics
1 answer:
OLEGan [10]3 years ago
8 0

Answer:

10x-15

Step-by-step explanation:

First, do Abbey. Abbey= 5 hrs less than 3 Emily.

Nathan spends twice as much as Abbey. Then you get 3x (Emily is x) -5 +x (for Emily) +6x - 10 (for Nathan. Add those. You get 3x+x+6x-5-10. I hope this is correct.

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What is the difference between a polynomial and a multinomial
podryga [215]

Answer:

A polynomial is an algebraic expression in two or more variables

A multinomial is an an algebraic expression having two or more unlike terms

Step-by-step explanation:

7 0
3 years ago
(7,-4);
olga_2 [115]

Literally just plug it in

6(7) + 5(-4) - 42 = 0

42 -20 -42 = 0

-20 = 0

Not a solution.

8 0
3 years ago
Paul wants to know when gas would have cost about $1.50 per gallon. What step should he take?
EastWind [94]
 he should know how much gallons he need to fill his car up 
multiply 1.50 by the amount of gallons he need so he should know how much money to spend on that many gallons
hoped i helped and brainlist plz
3 0
3 years ago
NEED HELP! DUE TOMORROW 2/4/2021
m_a_m_a [10]
The second Version of the game is greater for hitting the down button because substituting any number for x, the second equation would always end up having a greater amount.
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3 years ago
Assume that adults were randomly selected for a poll. They were asked if they "favor or oppose using federal tax dollars to fund
ser-zykov [4K]

<u>Testing the hypothesis</u>, it is found that since the <u>p-value of the test is 0.0042 < 0.01</u>, it can be concluded that the proportion of subjects who respond in favor is different of 0.5.

At the null hypothesis, it is tested if the <u>proportion is of 0.5</u>, that is:

H_0: p = 0.5

At the alternative hypothesis, it is tested if the <u>proportion is different of 0.5</u>, that is:

H_1: p \neq 0.5

The test statistic is given by:

z = \frac{\overline{p} - p}{\sqrt{\frac{p(1 - p)}{n}}}

In which:

  • \overline{p} is the sample proportion.
  • p is the value tested at the null hypothesis.
  • n is the sample size.

In this problem, the parameters are given by:

p = 0.5, n = 483 + 398 = 881, \overline{p} = \frac{483}{881} = 0.5482

The value of the test statistic is:

z = \frac{\overline{p} - p}{\sqrt{\frac{p(1 - p)}{n}}}

z = \frac{0.5482 - 0.5}{\sqrt{\frac{0.5(0.5)}{881}}}

z = 2.86

Since we have a <u>two-tailed test</u>(test if the proportion is different of a value), the p-value of the test is P(|z| > 2.86), which is 2 multiplied by the p-value of z = -2.86.

Looking at the z-table, z = -2.86 has a p-value of 0.0021.

2(0.0021) = 0.0042

Since the <u>p-value of the test is 0.0042 < 0.01</u>, it can be concluded that the proportion of subjects who respond in favor is different of 0.5.

A similar problem is given at brainly.com/question/24330815

3 0
3 years ago
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