MATHEMATICS MIDDLE SCHOOL

A+B=8
C+D=6
A+C=13
B+D=8
Please answer it?

Answers

Answer 1
Answer:

Answer:  No Solution

Step-by-step explanation:

8 = A + B                                  13 =  A    +   C

6 =              C + D                      8 =        B   +    D

14 = A + B + C + D                     21 = A + B + C + D

The sum of A, B, C, and D cannot equal 14 and also 21 so there is

NO SOLUTION

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Lisa glued two pieces of wood together to make the letter L in her art class. She plans to paint all sides of it purple, including the base.Note: Figure is not drawn to scale.

The longer piece of wood has dimensions of 1 inch by 1 inch by 9 inches. The shorter piece of wood has dimensions of 5 inches by 1 inch by 1 inch. How many square inches of purple paint will Lisa use to paint her letter L?

Answers

Answer:

46 square inches

Step-by-step explanation:

Alana and Petra go to a used book sale, where every book is the same price. Alana buys 5 books and Petra buys 4 books. They run into their friend Angus, who really loves to read, and discover that he has bought 19 books. Angus received a $10.00 discount, but he still spent $7.50 more than Alana and Petra combined. How much does one book cost?

Answers

Answer:

Cost of one book is $1.75.

Step-by-step explanation:

Let the cost of one book is $x.

Alana and Petra brought 5 + 4 = 9 books together.

⇒ Cost of book brought by them together is $9x

Angus brought 19 books and he gets $10 discount.

⇒ He paid for book is $19x - 10

But also Angus spent $7.5 more than Alana and Petra

⇒ 19x - 10 = 9x + 7.5

⇒ 10x = 17.5

⇒ x = 1.75

Thus the Cost of one book is $1.75.

What is 9 6/9 - 4 8/9

Answers

The answer is 4 7/9.

Since you cannot subtract the numerators, you have to take 1 from the whole number, so 9 turns into 8 and you add the denominator to the numerator to make the equation 8 15/9 - 4 8/9 which is 4 7/9 :).
You already have a common denominator, so you should convert to improper fractions to subtract them easier. These would be 87/9-44/9, and then you subtract the numerators and leave the denominator. 87-44=43, so your answer is 43/9, or 4 7/9, or 4.77777...

12 out of 18 students buy pizza for lunch on Fridays. At this rate if there are 240 students in the entire school, how many students can be expected to buy pizza for lunch this Friday?

Answers

160. This is because u take the total(240) divide it by 18 and multiply by 12.


however, you can also simplifiy the fraction (12/18) into (2/3) and divide by the bottom denominator (3) and multiply by the top numerator. ;)

Last week Trent made 80 on his quiz. This week he made a 90. What is the percent of increase in his score? A.10%
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Answers

90=80x
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because 10+80 equals 90

on average a collage claims to accept 18% of its applicants. if the collage has 5,000 applicants predicts how many will be accepted. if 885 applicants are accepted is the collage's claim accurate

Answers

It is incorrect it has to be 900 applicants not 885.
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