Ashley was going to sell all of her stamp collection to buy a video game. After selling half of them she changed her mind. She then bought nine more. How many did she start with if she now has 39?

Answers

Answer 1
Answer: Well in this problem we just have to work backwards doing everything opposite of what she did in order to get the final answer.
so she has 39 stamps at this moment. and since she bought nine more stamps lets subtract that value to see what she had before that.
 1.) 39 - 9 = 30
now she has 30. but she said that before step one she sold half of them to buy that video game. so she divided her starting number by two. so again we are going to work backwards by multiplying the number by 2:)
2.) 30 x 2 = 60!!
3.) So she started out with 60 stamps 
answer is 60:)
hope i helped

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A fraction is a short way to write a division problem.

Whenever you see a fraction, it means

           (the top number) divided by (the bottom number).

When you pick up your pencil or your calculator and actually do the
division, the answer to the division is the decimal form of the fraction.

To change that fraction  1/5  to a decimal, divide  1  by  5 .

Then, to change the decimal to a percent, move the
decimal point 2 places that way ==>.

The angle measures of triangle ABC are given• The measure of angle A is (2x – 10)
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• The measure of angle Cis (4x)
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Answers

The measure of the value x of the triangle is x = 20.

Given data:

In a triangle, the sum of the angles is always 180 degrees. Therefore, we can set up an equation using the given angle measures:

Angle A + Angle B + Angle C = 180

Substitute the given angle measures:

(2x - 10) + 70 + 4x = 180

Combine like terms:

6x - 10 + 70 = 180

Simplify:

6x + 60 = 180

Now, subtract 60 from both sides of the equation:

6x = 120

Finally, divide both sides by 6 to solve for x:

x = 20

Hence, the value of x is 20 and the angles are solved.

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x is equal to 20.

The angles of one triangle always add up to 180°, so we can add the measures of each angle together and make an equation.

equation —> 2x - 10 + 70 + 4x = 180

After combining like terms, we get 6x + 60 = 180.

Then we can subtract 60 from both sides to isolate the variable, and the equation becomes 6x = 120. Then we can divide both sides by 6 to get the value of x. The equation becomes x = 20.

Which quadratic function has one real solution?A.0 = 2(x + 7)(x – 5)
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Hello,

B; (x-3)² solution 3 multiplicity 2
others have two roots.

Answer:

The answer is B (0 = (x – 3)(x – 3))

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Answers

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Answers

Final answer:

The solution to the system of equations y= x - 4 and y= 6x - 10 is (1.2,-2.8) by using substitution method and solving the resulting equation.

Explanation:

To solve this system of equations, you can use the substitution method. Since both equations have 'y' isolated, you can set them equal to each other. This gives you x - 4 = 6x - 10. To solve this equation, you can subtract 'x' from both sides which will give you -4 = 5x - 10. Then add 10 to both sides to give you 6 = 5x. Finally, divide by 5 on both sides to give you x = 1.2. Substituting x = 1.2 into the first equation y = x - 4 gives us y = 1.2 - 4, which simplifies to y = -2.8. Thus the solution to the system of equations is (1.2,-2.8).

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