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3 years ago

A sheet of 20 stamps cost $9.20. What is the cost of each stamp?

Mathematics

1 answer:

Bess [88]3 years ago

7 0

To find the cost of one stamp, divide the total cost by the total number of stamps bought:

9.20 / 20 = 0.46

Each stamp cost 46 cents.

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What are the solution(s) of x^2-4=20?

Pie

$x^2-4=20\qquad|+4\\\\x^2=24\to x=\pm\sqrt{24}\\\\x=-\sqrt{4\cdot6}\ \vee\ x=\sqrt{4\cdot6}\\\\x=-2\sqrt6\ \vee\ x=2\sqrt6$

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2 years ago

Solve the equation: x^2+3x-7=0 give your answer to 2 decimal places

Kaylis [27]

Answer:

x1 = 1.54

x2 = -4.54

Step-by-step explanation:

just use calculator

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3 years ago

Midpoint (12, -9), endpoint (19, 0) the other endpoint is

Elza [17]

Answer:

(5, -18)

Brainliest, please!

Step-by-step explanation:

(12, -9)(19, 0)

x distance: 7, y distance: 9

To get the other endpoint, we must apply the opposite.

x distance: -7, y distance: -9

(12, -9)

12 - 7 = 5, -9 - 9 = -18

(5, -18)

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3 years ago

If 100% of 22 rooms are full, how many rooms are full?

Assoli18 [71]

Answer:

Step-by-step explanation:

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3 years ago

Read 2 more answers

The equation of a line is given by 4x-3y=12.How do you solve for x

maria [59]

Simplifying

4x + -3y = 12

Solving

4x + -3y = 12

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '3y' to each side of the equation.

4x + -3y + 3y = 12 + 3y

Combine like terms: -3y + 3y = 0

4x + 0 = 12 + 3y

4x = 12 + 3y

Divide each side by '4'.

x = 3 + 0.75y

Simplifying

x = 3 + 0.75y

5 0

3 years ago