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3 years ago

Please help me on my hw

Mathematics

1 answer:

alina1380 [7]3 years ago

6 0

Answer:

A = 0.7777777777777

B= 0.2424242424

C= 0.2727272727

Step-by-step explanation:

Plz make it brainlist answer

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What percent of 2b is: 0.04b; 0.2b; 0.56b; 1.8b; 2.5b; 3b; By what percent are they each larger or smaller than 2b?

Marina86 [1]

Answer:

1. 0.04b. 0.04b is 2% of 2b. It is smaller than 2b by 98%.

2. 0.2b. 0.2b is 10% of 2b. It is smaller than 2b by 90%.

3. 0.56b. 0.56b is 28% of 2b. It is smaller than 2b by 72%.

4. 1.8b. 1.8b is 90% of 2b. It is smaller than 2b by 10%.

5. 2.5b. 2.5b is 125% of 2b. It is larger than 2b by 25%.

6. 3b. 3b is 150% of 2b. It is larger than 2b by 50%.

Step-by-step explanation:

1. 0.04b

For all the cases, we will use Rule of Three, this way.

Percentage * 2 = 100 * 0.04

Percentage = (100 * 0.04)/2 (Dividing by 2 at both sides)

Percentage = 4/2 = 2%

0.04b is 2% of 2b. It is 98% smaller than 2b.

For all cases, we will use (100 - x) for calculating how smaller or larger the expression is related to 2b, where x is the percentage of the expression itself). In this case, 100 - 2 = 98.

2. 0.2b

Again, we will use Rule of Three, this way:

Percentage * 2 = 100 * 0.2

Percentage = (100 * 0.2)/2 (Dividing by 2 at both sides)

Percentage = 20/2 = 10%

0.2b is 10% of 2b. It is 90% smaller than 2b.

3. 0.56b

Again, we will use Rule of Three, this way:

Percentage * 2 = 100 * 0.56

Percentage = (100 * 0.56)/2 (Dividing by 2 at both sides)

Percentage = 56/2 = 28%

0.56b is 28% of 2b. It is 72% smaller than 2b.

4. 1.8b

Again, we will use Rule of Three, this way:

Percentage * 2 = 100 * 1.8

Percentage = (100 * 1.8)/2 (Dividing by 2 at both sides)

Percentage = 180/2 = 90%

1.8b is 90% of 2b. It is 10% smaller than 2b.

5. 2.5b

Again, we will use Rule of Three, this way:

Percentage * 2 = 100 * 2.5

Percentage = (100 * 2.5)/2 (Dividing by 2 at both sides)

Percentage = 250/2 = 125%

2.5b is 125% of 2b. It is 25% larger than 2b.

In this case, 100 - 125 = -25. It means the second expression is larger than 2b by 25%.

6. 3b.

Again, we will use Rule of Three, this way:

Percentage * 2 = 100 * 3

Percentage = (100 * 3)/2 (Dividing by 2 at both sides)

Percentage = 300/2 = 150%

3b is 150% of 2b. It is 50% larger than 2b.

In this case, 100 - 150 = -505. It means the second expression is larger than 2b by 50%.

6 0

3 years ago

Pls help and no links :-)

RSB [31]

Answer:

${ \tt{ \frac{ {x}^{8} {y}^{6} }{ {x}^{2} {y}^{3} } }} \\ \\ = { \tt{ {x}^{(8 - 2)} {y}^{(6 - 3)} }} \\ \\ = { \underline{ \tt{ \: {x}^{6} {y}^{3} \: }}}$

6 0

2 years ago

Type the correct answer in the box.

Marysya12 [62]

Answer:(-2, 2)

Step-by-step explanation:

7q² - 28 = 0

Add 28 to bothside

7q² - 28 + 28 = 0+ 28

7q² = 28

Divide bothside by 7

7q² / 7 = 28/7

q² = 4

Take the square root of bothside

√q² = ±√4

q = ± 2

q = -2 or q =2

q = (-2, 2)

8 0

3 years ago

PLEASE HELP I WOULD REALLY APPRECIATE IT... Find the sum. {-7b+8c}-{12a+14}+{5a+5b}

REY [17]

This is your answer, hope it helped.

6 0

3 years ago

Read 2 more answers

A radio station has a broad cast area in the shape of a circle with equation x^2+y^2=5625 where the constant represents sqaure m

iren2701 [21]

Answer: The equation of the circle is:x^2 + y^2 = r^2x^2 + y^2 = 75^2a. ... shape of a circle with the equation x^2+y^2=5,625 where the constant represents square miles. a. Find the intercepts of the graph and state the radius in miles. b. what is the area of the region in which the broadcast station can be picked up? 1.

Step-by-step explanation:

3 0

3 years ago