MATHEMATICS HIGH SCHOOL

Solve the equation 4n-7=-23

Answers

Answer 1
Answer:

Answer:

n=-4

Step-by-step explanation:

-23+7=-16

-16/4=-4
Answer 2
Answer:

Answer:

-4

Step-by-step explanation:

4n-7=-23 =-7 the oppsite is +7 so that will = 0 and for the other side which is -23 you will add 7 to it to get -16 and then -16 divided by 4   is -4

4n=-16

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Susan has a collection of nickels and dimes. If the number of nickels is times the number of​ dimes, how many nickels and how many dimes does she​ have?

Answers

there’s no context to your question, it could be any number. try reworking your question.

What is 371/2% as a fraction. simplify your answer..

Answers

(371)/(2)%
=(371)/(2) × (1)/(100) (percentage)
Because (371)/(2) ÷ 100 is the percent
and we multiply by the reciprocal of 100 which is (1)/(100)
=(371)/(200)
As a fraction it is: (371)/(200)
As a decimal it is: 1.855

EXPAND it please and explain
(9r-s/7)(9r+s/7)

Answers

Answer:

2. 2

81r - s/49

Step-by-step explanation: I don’t know how to explain it but yeah

( I’m probably wrong so if I am I’m sorry)

Arliss has two pieces of carpet runner. One is yards long and the other is yards long. She needs 10 yards of carpet runner altogether. How much more does she need to buy?

Answers

Given:
10 yards required
5 2/3 yards on hand.

We need to subtract the yards on hand from the total yards required.

First, we need to convert the mixed fraction into an improper fraction.

5 2/3 = ((5*3)+2)/3 = (15+2)/3 = 17/3

Second, we need to multiply 10 by a fraction that will give us the denominator of 3.

10 * 3/3 = (10*3)/3 = 30/3

Third, we do subtraction using our derived fractions.

30/3 - 17/3 = (30-17)/3 = 13/3

Lastly, we simplify the improper fraction. Improper fraction is a fraction whose numerator is greater than its denominator. Its simplified form is a mixed fraction.

13/3 = 4 1/3

Arliss needs to buy 4 1/3 yards more to complete the required yard length. 

Answer: 41/3

Step-by-step explanation:

**WILL GIVE MEDAL!!!**A car traveling on a highway is 60 miles away from home after 1 hour, and is 300 miles away from home after 5 hours. What is the rate of change of the car’s distance over time?

a. 1/60 mph
b. 15/2 mph
c. 55mph
d. 60 mph

Answers

If the car is traveling 60mph and is 300 miles away after 5 hours, the rate of change here is to divide 5 by 300. The answer is 60 (D). The problem here would look like 300/5=60. So the rate of change of the car's distance over time would be 60.

Find the mean, median, and mode of the data set. Round to the nearest tenth.15, 1, 4, 4, 8, 7, 15, 4, 15, 4, 5
Choose one answer.
a. mean = 6.8, median = 5, mode = 4
b. mean = 7.5, median = 5, mode = 4
c. mean = 7.5, median = 8, mode =4
d. mean = 6.8, median = 5, mode = 8

Answers

First im gonna organize the numbers from smallest to biggest:
1, 4, 4, 4, 4, 5, 7, 8, 15, 15, 15 ( These are 11 numbers)

For mean, you have to add all the numbers then divide it by 11.
The answer is about 7.5

For median, you have to find the "middle number, but you have to organize the numbers from smallest to largest like I did.
1, 4, 4, 4, 4, 5, 7, 8, 15, 15, 15 . 5 is the middle number, well because its in the middle

For mode you have to find the number that is most repeated.
1, 4, 4, 4, 4, 5, 7, 8, 15, 15, 15  (there are three 15's)
There are four 4's so the answer is 4


The answer, then is B
The mean is the average, add up the numbers and divide by how many numbers there are.

\sf~Mean=(15+1+4+4+8+7+15+4+15+4+5)/(11)

Add:

\sf~Mean=(82)/(11)

Divide:

\sf~Mean\approx7.5

The median is the middle number. First, line up the numbers in order of least to greatest.

1, 4, 4, 4, 4, 5, 7, 8, 15, 15, 15

Now find the number in the middle:

That number is 5, so that's our median.

The mode is the most repeated number.

As you can see, 4 is repeated the most, so it's the mode.
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