Please help with mathematics

Answers

Answer 1

Answer: Number 2 would be A.4/1/2
Number 1 would be C.
Number 3 would be .2/2
Number 4 would be D because you subtract.
Number 5 would be 22. x=22. 22 divided by 10 equals 2 1/5.
Hope this helps!:)

Answer 2

Answer: First question:-

Order from least to smallest.

9,3, 9 1/3, 37/4, 9.34

Now, let us get all the numbers in the same format.

37/4 = 9 1/4

9 1/4 = 9.25

9.34

9.3 = 9.30

9 1/3 = 9.33

Now order them.

Final answer: 37/4, 9.3, 9 1/3, 9.34 DONE!

Second question:-

6 1/2 + 5 1/5 = 6 5/10 + 5 2/10 = 11 7/10

11 7/10 + 2 4/5 = 11 7/10 + 2 8/10 = 13 15/10 = 14 1/2

14.5 = n + 10

Now solve for n

14.5 - 10 = n + 10
-10

4.5 = n

Final answer: n = 4 1/2

Third question:-

Reciprocity of 1 1/2

first, we make the mixed number an improper fraction.

1 1/2 = 1*2 = 2 + 1 = 3

3/2 the reciprocal of it is 2/3

Final answer: 2/3

Fourth question:-

solve the proportion.

2 2/5 minutes to run 1.5 miles.

2.4/1.5 = 1/x

Cross multiply. 2.4*x = 1.5*1

2.4x = 1.5
-------------
2.4

x = 2.4/1.5

Final answer: x= 1 3/5

Fifth question:-

x/10 = 2 2/10 <--------- i made sure the denom's are the same!

22/10 = x/10

x = 22

Final answer: x = 22

YES...WE HAVE OUR ANSWERS...AND THIS TOOK ME FOREVER. :D

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Help me plzzzzzzz ??????

Answers

I think the answer is C
12-5=7
7x-20

it's A because
$5x - 12x = 7x$
and the 20 you leave it in

3x+5y=10. 5x+7y=10 system of equations

Answers

3x + 5y = 10....multiply by 5
5x + 7y = 10 ...multiply by -3
------------------
15x + 25y = 50 (result of multiplying by 5)
-15x - 21y = -30 (result of multiplying by -3)
-----------------add
4y = 20
y = 20/4
y = 5

3x + 5y = 10
3x + 5(5) = 10
3x + 25 = 10
3x = 10 - 25
3x = -15
x = -15/3
x = -5

solution is (-5,5)

Tom bought a soft drink for two dollars and five candy bars. He spent a total of $22. How much did each candy bar class?

Answers

Answer:

c = $5.00

Step-by-step explanation:

Let c = the cost of each candy bar

3 + 8c = 43

8c = 40

Ralph is 3 times as old as Sara in 4 years, Ralph will be only twice as old as Sara will be then. Find Ralphi's age now

Answers

Answer:

Step-by-step explanation: Let x represents Sara's age, since Ralph is 3 times as old, the Ralph's age will be 3x.

In 4 years time, Sara will be x+ 4 , Ralph will also be 3x + 4

It was said that Ralph will be as twice as Sara's age in 4 years

⇒ 3x + 4 = 2 ( x+4)

⇒ 3x + 4 = 2x + 8

collecting the like terms

3x - 2x = 8 - 4

x = 4

Since x represents Sara's age, then Sara is 4 years and since Ralph is presently 3 times Sara's age, then Ralph's age is 3 x 4 = 12 years

Kiara takes out a student loan of $4000. She will be charged interest on the loan at a rate of 2.5% compounded monthly. She plans to repay the loan in full at the end of 2 years. What is the amount of interest she will have to pay?

Answers

$\bf ~~~~~~ \textit{Compound Interest Earned Amount}\n\nA=P\left(1+(r)/(n)\right)^(nt)\quad \begin{cases}A=\textit{accumulated amount}\nP=\textit{original amount deposited}\dotfill &\$4000\nr=rate\to 2.5\%\to (2.5)/(100)\dotfill &0.025\nn=\begin{array}{llll}\textit{times it compounds per year}\n\textit{monthly, thus twelve}\end{array}\dotfill &12\nt=years\dotfill &2\end{cases}$

Liz has a 24-inch long ribbon. She cuts nine 2-inch pieces from her original ribbon. How much of the original ribbon is left?

Answers

2x9=18
24-18=6
she has 6 inch pieces of ribbon long]

First, let's see how much of the ribbon Liz cut off.

She cut off 9 pieces, and each piece was 2 inches, so you'll have to multiply 9 by 2 to see how many inches she cut off in total. Multiplying 9 by 2 is the same as adding
2+2+2+2+2+2+2+2+2!

2*9=18

18 inches of ribbon were cut off.

Now, you have to subtract 18 from 24 to find how many inches are left. You need to subtract because you have the total inches and the amount cut off, and they want to know how much she didn't cut off.

24-18=6

6 inches are left.

I hope I helped! :)