Simplify -3/4(5p-12)+2(8-1/4p)

Mathematics

1 answer:

PSYCHO15rus [73]2 years ago

8 0

Answer:

-17p-100/4

Step-by-step explanation:

-17p-100/4

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mitch is buying candy bars for his friends. he wants to give 2 bars to each friend , and he wants to have 10 spare bares. he can

Jlenok [28]

Let x be the number of friends.

He wants to give out 2x bars and have 10 left and he has 16 bars so the expression is:-

2x + 10 = 16

now he can solve for x to find the number of friends he can treat.

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2 years ago

Lana is the oldest of four sisters. Her youngest sister is half her age. The other two sisters are twins $2$ years younger than

vagabundo [1.1K]

Let the youngest sister be n years
Lana will be 2n years, as her youngest sister is half her age
The age of the twins separately will be 2n-2 as they are 2 years younger than Lana
So, the equation looks like this:
n + 2n + 2(2n-2) = 45
Now solve for n:
3n + 4n - 4 = 45
7n - 4 = 45
7n = 49
n = 7
So the youngest sister is 7, Lana is 14 and the twins are 12. 14 + 12 + 12 + 7 =45

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2 years ago

A college student is interested in testing whether business majors or liberal arts majors are better at trivia. The student give

attashe74 [19]

Answer:

There is no significant difference between the two averages at 5% level

Step-by-step explanation:

Given that a a college student is interested in testing whether business majors or liberal arts majors are better at trivia.

The student gives a trivia quiz to a random sample of 30 business school majors and finds the sample’s average test score is 86. He gives the same quiz to 30 randomly selected liberal arts majors and finds the sample’s average quiz score is 89

Thus he has done a hypothesis testing for comparison of two means of different subjects. n =30

$H_0: Mean of business majors = Mean of liberal arts majos\\H_a:Mean of business majors \neq Mean of liberal arts majos$

Since which is better is not claimed we use two tailed test here

We find that p value $= 0.0524 >5%$ our alpha

Since p >alpha, we find that there is no significant difference between the averages of these two groups and null hypothesis is accepted

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2 years ago

Ben has 18 pears. Sophia has a number of pears two less than Ben. How many pears Sophia has?

Serggg [28]

18 pears subtract by 2 wich will equal 16 pears...

18-2=16

7 0

2 years ago

Read 2 more answers

The graph of a proportional relationship passes through (12, 16)<br> and (1, y)<br> . Find y

k0ka [10]

Answer: The value of y is $\frac{4}{3}$ .

Explanation:

It is given that the graph of a proportional relationship passes through (12, 16)

and (1, y).

The graph of a proportional relationship means the x and y coordinates are in a proportion k. The equation of the graph is in the form of y=kx. Where k is the proportion factor.

It is given that the graph passing through (12,16).

$y=kx$