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3 years ago

Solve for y: 2x+3y=21

Mathematics

1 answer:

stealth61 [152]3 years ago

6 0

Answer:

y = 7 - 2x/3

Step-by-step explanation:

Make the y alone, so 3y = -2x+21

Divide everything else by 3, so y = -2x/3 +7

You end with the answer of y= 7-2x+3

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11 + 16 +8 X 16 What is the value of the expression?

lesya [120]

Answer:

155

Step-by-step explanation:

11 plus 16 plus (8 times 16)

11 plus 16 plus 128

27 plus 128

155

8 0

3 years ago

To make the same totem pole with wood that costs y dollars Ronald would have to spend a total of $35.19. Explain which property

nikitadnepr [17]

Answer:

Part 1) Subtraction Property of Equality

Part 2) This property can be used , because addition and subtraction have inverse relationships

Step-by-step explanation:

we know that

The subtraction property of equality tells us that if we subtract from one side of an equation, we also must subtract from the other side of the equation to keep the equation the same

we have

$10.50+y=35.19$

Solve for y

Applying Subtraction Property of Equality

subtract 10.50 both sides

$10.50+y-10.50=35.19-10.50$

$y=\$24.69$

Remember that this property can be used , because addition and subtraction have inverse relationships.

6 0

3 years ago

Whitney bought a watch for $107.50. The finance charge was $11 and she paid for it over 6 months.

Anna11 [10]

Answer:

Her proximate APR is 5.1%

Step-by-step explanation:

The formula of the APR is $APR=\frac{FC}{A}$ × $\frac{m}{12}$ × 100%, where

FC is the finance charge
A is the amount financed
m is the number of months

∵ Whitney bought a watch for $107.5

∴ A = 107.5

∵ The finance charge was $11

∴ FC = 11

∵ She paid for it over 6 months

∴ m = 6

- Substitute these values in the formula above

∵ $APR=\frac{11}{107.5}$ × $\frac{6}{12}$ × 100%

∴ APR = 5.11627907%

- Round it to the nearest tenth

∴ APR = 5.1%

Her proximate APR is 5.1%

4 0

4 years ago

Do you know the answer to this one I need answer plz

Jlenok [28]

The correct option is first option: x=t(y-4f)

Further explanation:

Given equation is:

$\frac{x}{t}+4f=y$

In order to solve the equation for x, we have to isolate x on one side of the equation

Using Subtraction property of equality

Subtracting 4f from both sides

$\frac{x}{t}+4f-4f=y-4f\\\frac{x}{t}=y-4f$

Multiplication property of equality

Multiplying both sides by t

$\frac{x}{t}*t=t(y-4f)\\x=t(y-4f)$

Hence, the correct option is first option: x=t(y-4f)

Keywords: Linear equation, Equation solution

Learn more about keywords about:

#LearnwithBrainly

7 0

3 years ago

HELP ME PLSSSSSSssss

Pavlova-9 [17]

Answer:

Step-by-step explanation:

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6 0

3 years ago