MATHEMATICS MIDDLE SCHOOL

after 6 years an account that earns 5% simple intrest has earned $480 in intrest. How much is the initial deposit?

Answers

Answer 1

Answer:

plug in your values into

I = PRT

480 = P(.04)(6)

solve for P

check your answer by finding the interest.

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If f(x)= -x+7 what is f(15)?

Answers

x = 15

Substitute that to equation

-(15) + 7

Answer:
f(x) = -8

F(x)=-x+7, and by saying “f(15)”, your saying x=15, since f(x) turns into f(15). So just replace all x’s with 15.

F(15)=-15+7
F(15)=-8

So -8 is the answer:)

A small bar of gold measures 40mm by 25mm by 2mm. One cubic millimeter of gold weights about 0.0005 ounces. Find the volume in cubic millimeter and the weight in ounces of this small bar of gold?Hank has cards that are 8 inches by 4 inches. A stack of these cards fits inside the box shown and used up 32 cubic inches of volume . How tall is the stack of card? What percent of the box's volume is taken up by the cards?

A typical stone on the lowest level of the great pyramid in Egypt was a rectangular prism 5 feet long by 5 feet 5 feet high by 6 feet deep and weighted 15 tons. What was the volume of the average stone? How much did one cubic foot of this stone weight?

Answers

The correct answer for the question that is being presented above is this one: "The volume of the average stone is this one: v = 40mm * 25mm * 2mm = 2000 mm^3 ; The weight of the one cubic foot of the stone is: 2000 mm^3 * .0005oz/1mm^3 = 1oz

What is one way to find the total costof a pair of shoes for $57 with a salestax of 2%?What is another way to find the total costof a pair of shoes for $57 with a sales taxof 2%?I need 2 different ways to answer each question

Answers

I did 57×2%=1.14 Than i add 57+1.14=58.14 see if thats one of ur answer

The ratio of three numbers is 4:5:3. the sum of the numbers is 54.what are the three numbers.

Answers

Answer:

The numbers are 18, 22.5, and 13.5

Step-by-step explanation:

You first need to figure out what number you use to multiply to find your answer. I found 4.5

Now, multiply all numbers by 4.5

4 x 4.5 = 18

5 x 4.5 = 22.5

3 x 4.5 = 13.5

Using the ratioevaluation technique, the three numbers represented by the ratio are 18, 22.5 and 13.5 respectively

(Actualratio÷sumofratios)×sumofvalues

Valuewithratioof4:

(4 ÷ (4+5+3)) × 54 = 18

Value with ratio of 5:

(5 ÷ (4+5+3)) × 54 = 22.5

Value with ratio of 4 :

(3 ÷ (4+5+3)) × 54 = 13.5

Therefore, the values are 18,22.5and 13.5respectively

Learn more : brainly.com/question/867574

what is this have no clue of how to do it ? ? n+31.53 =62.4 and this one to 9.2+n+8.4=20.8 please help !

Answers

Ok so to solve to first one u do this:

62.4 - 31.53, which gives u 30.87. and then u add 30.87 and 31.33, and u get 62.4

for the second one u do the same thing.

To the first problem, n=30.87
To the second one, n=3.2

Find the sum of 12.56 and 45.89