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3 years ago

Please refer to the image

Mathematics

1 answer:

Dafna11 [192]3 years ago

5 0

I do not know what to answer here, you did not include the question itself.

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2b^2x^2+3a^2y^2=a^2b^2 for b^2

Artemon [7]

Answer:

${b}^{2} = \frac{3 {a}^{2} {y}^{2} }{ {a}^{2} - 2 {x}^{2} }$

Step-by-step explanation:

We want to solve for b² in

$2 {b}^{2} {x}^{2} + 3 {a}^{2} {y}^{2} = {a}^{2} {b}^{2}$

Combine terms containing b²

$3 {a}^{2} {y}^{2} = {a}^{2} {b}^{2} - 2 {b}^{2} {x}^{2}$

Factor b² to get:

$3 {a}^{2} {y}^{2} = ({a}^{2} - 2 {x}^{2}) {b}^{2}$

Divide by a² -2b²

${b}^{2} = \frac{3 {a}^{2} {y}^{2} }{ {a}^{2} - 2 {x}^{2} }$

4 0

3 years ago

Jill and Erika made 5 gallons of lemonade for their lemonade stand. How many quarts did they make? If they charge $2.50 per quar

yawa3891 [41]

a. How many quarts did they make is 25 quarts of lemonade

b. How much money will they make if they sell it all is $62.50

a. Calculation to determine How many quarts did they make.

Given: 1 gallon =5 quarts

Hence:

5 gallons of lemonade=5×5 quarts of lemonade

5 gallons of lemonade=25 quarts of lemonade

b. Calculation to determine how much money will they make if they sell it all

Given: 1 quarts=$2.50

Hence:

25 quarts=25 ×$2.50

25 quarts=$62.50

Inconclusion:

a. How many quarts did they make is 25 quarts of lemonade

b. How much money will they make if they sell it all is $62.50

Learn more here:

brainly.com/question/13442515

5 0

2 years ago

The scale factor of the dimensions of two similar wood floors is 4:3. It costs $207 to refinish the smaller wood floor. At that

Crank

Answer:

$276

Step-by-step explanation:

Create a proportion where x is the cost to refinish the larger wood floor:

$\frac{4}{3}$ = $\frac{x}{207}$

Cross multiply and solve for x:

3x = 828

x = 276

So, to refinish the larger wood floor, it would cost $276

6 0

3 years ago

Solve the system of linear equations using elimination.

N76 [4]

Answer:

C (-2,1)

Step-by-step explanation:

−2x − y = 3 (1)

−9x − y = 17 (2)

(1) y = -2x - 3

(2) y = -9x - 17

-2x - 3 = -9x - 17

7x = -14

x = -2

y = -2(-2) - 3

y = 4 - 3

y = 1

8 0

3 years ago

Ty received test grades of 82%, 74%, 76%, 76%, and 74%.

Nikitich [7]

Answer:

a) To earn C he needs at least 68 and less than 98

b) No, he couldn't make it.

Step-by-step explanation:

I. His avg value is (382 + x)/6

I pick a random number and that gave

(68 => to reach 75) and (98 => to reach 80)

So that makes he needs at least 68 and less than 98

II. The reason why he cannot make it is

if 100 is 100%

= (100 + 382)/6

= 80.33 That's impossible to reach 90

Hope that help :)

7 0

3 years ago