MATHEMATICS HIGH SCHOOL

Solve for x:
(125^2x)(5x) = 25^3

Answers

Answer 1
Answer: (125^2x)(5x) = 25^3
(15625x)(5x)=15625
78125x=15625
x=5

Hope I helped ;D

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9/11=?/22
a.4
b.18
c.12
d.9

Answers

B. all you have to do is multiply the top and bottom by 2
you multiply eleven by two to get twenty-two and with fractions " what you do to the top you must do to the bottom" so: 9/11 x 2/2 = 18/22 so B.

True or false. in a two-column proof the left column contains a series of deductions

Answers

it's TRRRRRRRUUUUUUUUUUUUUUUUUUEEEEEEEEEEEEE
the answer Is true.

What is the simplified expression for 2(x - 5)?

Answers

If you would like to know the simplified expression for 2 * (x - 5), you can find this using the following steps:

2 * (x - 5) = 2 * x - 2 * 5 = 2 * x - 10

The correct result would be 2 * x - 10.
The answer would be 2x-10

Which expression can be used to convert 22 Australian dollars to US dollars?Assume 1.2 Australian dollars equals 1 US dollar.

Answers

Answer:

Expression used to convert 22 Australian Dollar to US Dollar is (22)/(1.2)

Step-by-step explanation:

Given:

22 Australian Dollars.

To Do: Expression which can be used to convert Australian dollar to Us dollar.

Let, x be the number of Australian Dollars and y be the US Dollars.

We know that 1.2 Australian Dollar equal to 1 US Dollar.

⇒ 1 Australian Dollar = (1)/(1.2)  US Dollar

So, x Australian Dollar = (1)/(1.2)* x\:=\:(x)/(1.2)  US Dollar

Thus, Expression that can be used to convert Australian Dollar into US Dollar is given by,

y=(x)/(1.2)

So. 22 Australian Dollar

put x = 22

y=(22)/(1.2)=18.3 US Dollars

Therefore, Expression used to convert 22 Australian Dollar to US Dollar is (22)/(1.2)
1.2(22)=x
x= US Dollar amount of 22 Australian dollars.

Hugh is going to bye school supplies pencils are $0.25 each,notebooks that are $2.50 each,back packs are $32.00 each.hugh bought x notbooks.write an expression for the cost of the notebooks? julio bought a backpack and y pencils. he spent less than $50. write an inequality that shows how much Julio spent.

Answers

32 + 0.25y + 2.50x < 50

That's just my guess. I'm not 100% sure.

Kayla currently has an account balance of $2,134.96. She opened the account 12 years ago with a deposit of $1,327.35. If the interest compounds twice a month, what is the interest rate on the account?

Answers

Answer:

Interest rate is 1.728%

Step-by-step explanation:

Here, we are interested in calculating the monthly interest rate on an account.

Mathematically;

The compound interest formula amount is given as;

A = P( 1 + r/n)^nt

where A is the amount at the end of the compounding = $2,134.96

P is the principal which is the amount deposited = $1,327.35

r is the rate which we want to calculate

n is the number of times per year it is compounded = (2 * 12) = 24 ( twice monthly)

t is the number of years = 12

2,134.96 = 1327.35( 1 + r/24)^(24 * 12)

divide both sides by 1327.35

1.608 = (1 + r/24)^288

Take the ln of both sides

ln 1.608 = ln ( 1 + r/24)^288

ln 1.608 = 288 ln (1 + r/24)

0.21 = 288 ln ( 1 + r/24)

Divide both sides by 288

0.00072 = ln (1 + r/24)

1.000716527571 = 1 + r/24

r/24 = 0.00072

r = 24 * 0.00072

r = 0.01728

which is same as 1.728%
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