Solve a math qs, please?

Answers

Answer 1

Answer: $-3=\frac { 3 }{ 4 } r+2\n \n -3-2=\frac { 3 }{ 4 } r\n \n -5=\frac { 3 }{ 4 } r\n \n \frac { 3 }{ 4 } r=\frac { 1 }{ 4 } \cdot 3\cdot r\n \n Multiply\quad both\quad \n sides\quad by\quad 4\n \n 4\cdot -5=4\cdot \frac { 1 }{ 4 } \cdot 3\cdot r\n \n -20=\frac { 4 }{ 4 } \cdot 3\cdot r\n \n -20=3r\n \n Divide\quad both\quad sides\n by\quad 3\n \n \frac { -20 }{ 3 } =\frac { 3r }{ 3 } \n \n \frac { -20 }{ 3 } =r$

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Ellie and heather drew floor models of their living rooms. Ellie's model represented 20 feet by 15 feet. Heathers model represented 18 feet by 18 feet. Whose floor model represents the greater area? How much greater?

Answers

Answer:

Heather's model has greater area by 24 sq.ft.

Step-by-step explanation:

Given : Ellie's model represented 20 feet by 15 feet.

Heather's model represented 18 feet by 18 feet.

To Find: Whose floor model represents the greater area? How much greater?

Solution:

Length of Ellie's model = 20 feet

Width of Ellie's model = 15 feet

Area = $Length * Breadth$

= $20*15$

= $300ft^2$

Length of Heather's model = 18 feet

Width of Heather's model = 18 feet

Area = $Length * Breadth$

= $18*18$

= $324ft^2$

Thus Heather's model has greater area by (324-300)= 24 sq.ft.

Heather's model is 324 square feet and Ellie's is 300 square feet. Therefore Heathers models is 24 square feet more than Ellie's model.

Football team has a total of 25 jerseys.there are 5 medium-sized jerseys.what percent of jersey are medium-sized jerseys

Answers

The medium-sized jersey can be written in terms of percent as 20%.

What is percentage?

A percentage is a value that indicates 100th part of any quantity.

A percentage can be converted into a fraction or a decimal by dividing it by 100.

The total number of jerseys are given as 25.

And, the number of medium-sized jersey is 5.

The percent value of medium-sized jerseys is given as,

Number of medium-sized jerseys ÷ Total number × 100

⇒ 5 ÷ 25 × 100

⇒ 20%

Hence, the percent value of medium-sized jerseys is 20%.

To know more about percentage click on,

brainly.com/question/29306119

#SPJ3

Answer:

20%

Step-by-step explanation:

There are 5 medium shirts out of 25 shirts.

5/25 = 0.20

It need to be a percent instead of a decimal so you times it by 100.

0.20*100 = 20%

▓ I hope I explained good enough. ▓

Apples are on sale at the grocery store at a price of 8 apples for $4.00 .Mark buys 12 apples. If he is charged the sale price for apples, how much will Mark pay?

Answers

You can do this problem 2 ways. Whichever works easier for you:

Take the cost of 8 apples and divide it by 8 in order to find a per apple cost
4/8 = $.50 per apple
Then multiply the total number of apples by the cost per apple
12 * $.50 = $6.00 paid

Or

You can divide the total number of apples by 8 to find how many units of apples you have

12/8 = 1.5

Then multiply the number of units by the cost for 1 unit (8 apples)

1.5*$4 = $6.00

Manuel builds and sells wooden crates. He made a table to show how much his crates cost.How much will he be paid for 7 crates?

$

Manuel’s Crates

Crates
2 4 6 8
Cost 25 45 65 85

Answers

the correct answer is 75 :)

The answer is $87.50.

Marta uses 1 piece of paper and 1 piece of ribbon to make kites. The paper comes in packs of 3 and the ribbon comes in packs of 4. What is the least number of kites Marta can make without any supplies left over?

Answers

Paper: 3/ 3/ 3/ 3
Ribbon: 4/ 5/ 6/ leftover 3
Kites: 3/ 3/ 3/ 3

Leftover: 1/ 2/ 3/ 0

Make a graph like that that solves the problem.

Answer:

12 kites because 12 is the least common multiple of 3 and 4

In the soccer games so far this season, Letty has had 15 goals in 20 attempts at a goal. What is the probability, expressed as a percent, that she will get a goal the next time she tries for one?A) 15%
B) 20%
C) 60%
D) 75%

Answers

20 is 1/5 of 100 so do 20x5=100 and 15x5=75

So there is a 75% chance she will make the goal

The answer would be D because 20 divided by 4 is 5 and 5 times 3 is 15 so 100 divided by 4 would be 25 and then that times 3 equals 75.

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