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3 years ago

Please help meeeeee :)

Mathematics

1 answer:

Anettt [7]3 years ago

7 0

Crosss multiply and som e for x

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X squared minus 7x plus 10 equals 0

joja [24]

X² - 7x + 10 = 0

Let's factor out the equation first.

x² - 7x + 10

x -2
x -5

This factoring of (x-2)(x-5) fit the equation.

(x-2)(x-5) = 0

One of the factors must equal 0 as to equal zero.

Either x - 2 = 0 or x - 5 = 0

x - 2 = 0
x = 2

x - 5 = 0
x = 5

The two answers are x = 2 or x = 5. Hope this helps!

3 0

3 years ago

(-3)3 power and (-7) 2nd power

VikaD [51]

Answer:

-3^3 = 27

-7^2 = 49

5 0

3 years ago

Circle B below has a diameter of 12 inches.

jeka94

I’m sorry I was never good at this once I always had problems with it in 7th grade

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4 years ago

What was left of A dollars after 45% of it was spent? (Show your work.)

anastassius [24]

Answer:

0.55A dollars

Step-by-step explanation:

If 45% of the money was spent, then the percentage left was

100% - 45%, or 55%.

Thus, to answer this question, we multiply (A dollars) by 0.55:

0.55A dollars was left after the expenditure of 45% of the original amount.

6 0

3 years ago

Kelly has a rock garden with a length of 6 feet. She constructs a scale model of the rock garden using the scale 1 inch:2 feet.

melamori03 [73]

Answer:

Part a) 3 inches

Part b) Yes, her scale model drawing will fit on the piece of paper 8.5 by 7 inches

Step-by-step explanation:

we know that

The scale drawing is

$1\ inch:2\ feet$

That means

1 inch in the model represent 2 feet in the actual

Part a) What is the length of the garden in her model?

we know that

The length of the garden is 6 feet in the actual

Find out the length of the garden in her model, using proportion

$\frac{1}{2}\ \frac{in}{ft}=\frac{x}{6}\ \frac{in}{ft}\\\\x=6/2\\\\x=3\ in$

Part b) If the width is 5 inches for the scale model and the scale is still 1 inch to 2 feet, will her scale model drawing fit on a piece of paper that is 8.5 inches by 7 inches? Why or why not?

we know that

The model width is described as 5 inches. Both the 3-inch length and the 5-inch width are less than the 8.5 inch and 7 inch dimensions of the paper Kelly is using.

therefore

She can easily draw her model on that size paper.

7 0

4 years ago