MATHEMATICS HIGH SCHOOL

Help me please I have no idea what the answer is​
help me please I have no idea what the answer - 1

Answers

Answer 1
Answer:

Answer:

-21/10

Step-by-step explanation:

-2/5 - 4/5 = -6/5  <--

a common denominator

Then...

-6/5 -9/10 = -21/10

There is not a common denominator so you have to multiply 2 to the -6/5 to make it -12/10

The answer can be left as an improper fraction which is -21/10

or a mixed number -2 1/10 th

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A radio commercial for a loan company states: “You only pay $0.29 a day for. each $500 borrowed.” If you borrow $1,500 for 120 days, what amount will you. repay, and what annual interest rate is the company actually charging?

Answers

Total Interest will be = .29*1500*12 / 500 = 104.4
so total amount to be repay = 1500+104.4=1604.4
and annual interest rate = 104.4*100*360/1500*120=20.88%
hope it helps

Answer:

Total amount to be repay is $ 1604.4

The annual  interest rate  the company actually charging is 25.40%

Step-by-step explanation:

Given:  A radio commercial for a loan company states: “You only pay $0.29 a day for each $500 borrowed.” We have borrowed $1,500 for 120 days.

We have to determine the amount to be repay and the annual interest rate  the company actually charging.

UNITARY method is a method in which we first find the value of a single unit and then find the desired value by multiply it with unit value.

Since, we have to pay $0.29 a day for each $500 borrowed.

Thus, when we borrow $1 , we pay (0.29)/(500)

So, when $1500  is borrowed , we pay  (0.29)/(500)* 1500=0.87

Thus, for 120 days we pay 0.87 × 120 = $104.4

Thus, total amount to be repay = 1500 + 104.4 = $ 1604.4

and annual interest rate is given by,

SI ={P* r* t}

We have to find rate

Simple interest = $ 104.4

Principal = $1500

time = 120 days

In year time is (120)/(365)

Substitute, we have,

104.4=(1500* r* 120)/(365)

Simplify, we have,

r = 25.40%

Thus, the annual  interest rate  the company actually charging is 25.40%

Translate the statement into an equation. Then solve the equation. The sum of 8 and 3 times a number is 23.

Answers

The best way to solve this is to write it out part by part. 

The first part is "the sum of 8 and 3," which is (8+3)

The second part is "...times a number," so we have n(8+3)

Lastly, "...is 23," means n(8+3) = 23, so here's the equation. In order to solve for n, divide both sides by (8+3) so 23/(8+3) which is 23/11. So the "number" is 23/11. 
Let the number be x
8+3x=23
3x=23-8
3x=15
x=5
The number is 5

Ryan was adding numbers on a number line. He started at –3 and then he added +2. He wrote that his answer was –5 . Is Ryan's answer reasonable?

A.
No, it is not reasonable because if you start at –3, you will move 2 spaces to the right and get –1.

B.
No, it is not reasonable because if you add two integers, you get a positive integer. The answer is +5.

C.
Yes, it is reasonable because if you start at –3, you will move 2 spaces to the left and get –5.

Answers

The answer is A because it is -1 because it would go to the right when you add two

A school librarian can buy books at a 20% discount from the list price. One month she spent $72 for books. What was the list price value of the books? Is the answer $90?

Answers

Answer:

\boxed{\sf \ \ YES \ \ }

Step-by-step explanation:

Hello

let's say that the price of the book was x

the price after a 20% discount is x - 20%*x = x*(1-20%)=x*(1-.20)=0.8*x

and this is $72 so we can write that

0.8*x=72

and then divide by 0.8 both parts

x = 72/0.8=90

So the list price value of the book is $90

and we can verify as 90 - 20%*90 = 90 - 18 = 72

Hope this helps

Find the root y=x^2-8x+15

Answers

Answer:

{3, 5}.

Step-by-step explanation:

y = x^2 - 8x + 15

(x - 5)(x - 3) = 0

x - 5 = 0 or x - 3 = 0

So the roots are {3, 5}.

Match the following problems with their answer, HELP ME PLEASE!!!!!

Answers

Answer:

1. 12.5%

2. 26%

3. 51

4. 16

Step-by-step explanation:

3/24=0.125 -> 12.5%

65/250=0.26 -> 26%

300*0.17=51

0.4*40=16
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