MATHEMATICS MIDDLE SCHOOL

Tomas correctly spelled 18 out of 20 words oh his last spelling quiz. What decimal represents the portion of the words that Tomas spelled correctly?

Answers

Answer 1
Answer: The decimals that represent the portions of the words that Tomas spelled correctly is 0.9 or 0.90.
Answer 2
Answer: 18/20 and put it on ?/10 which is 9/10. so 0.90

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A fifth grade class painted pieces of cardboard for an art project. Each piece of cardboard had an area of 6.25 square inches. The students painted 200 pieces of cardboard each day.A. What is the total area of cardboard that they painted by the end of the 3rd day?
6.25x200=1250 1250 x3= 3750
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Answers

i think that the answer is B

Find the sum of the arithmetic sequence. 3, 5, 7, 9, ..., 21

Answers

The answer is:

120

Given the arithmetic sequence

3, 5, 7, 9, ..., 21

The first term a = 3 & a common difference d = 5 - 3 = 7 - 5 = ... = 2

If there are n number of terms in the above A.P. then last term l = 21 will be the nth term given as:

l = a + (n - 1)d

21 = 3 +(n − 1)2

n = 10

Hence the sum of given arithmetic progression (A. P.) up to 10 terms is given general formula.

Sn = n/2(a + l)

S10 = 10/2(3 + 21)

= 120

The second of two numbers is 4 more than the first. The sum of the numbers is 56. Find the numbers.

Answers

numbers are 26 and 30
{ x + y = 56
{ y = x + 4

x + y = 56
x + ( x + 4 ) = 56
x + x = 56 - 4
2x = 52
x = 52
       2
x = 26

x + y =56
26 + y = 56
y = 56 - 26
y = 30

S = { 26 , 30 }

What is the GCF of 8 and 12

Answers

The GCF is of 8 and 12 is 4
The GCF of 8 and 12 is four because 8 and 12 can both be divided in 2 and you would get 4 and 6 and divide that by 2 again and you get 2 and 3 they have nothing and common so you multiply 2x2 and you get 4!

Joe deposits $20,000 for his retirement in an account with a 7% simple interest rate. How long will it take Joe to earn $14,700 in interest?

Answers

10 to 11 years
7% of 20k is 1400 and that goes in to it 10.5 times
that how you solve it

Is it considered a parallelogram?

Answers

c

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