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2 years ago

HELPHELELWLPLS HELP MEEEEEEEEE

Mathematics

2 answers:

Alecsey [184]2 years ago

7 0

Answer:

Step-by-step explanation:

First plug in 7 for x and solve

7(14-7)

7(7)

Viefleur [7K]2 years ago

5 0

Answer:

its 49 make me brainiest

Step-by-step explanation:

14-x you get rid of the x and turn it in to 7. 14-7= 7 so then you multiply 7 with 7

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Use distributive property to simplify <br> -(x+3y-z)

UkoKoshka [18]

Answer:

-x - 3y + z

Step-by-step explanation:

Think of a imaginary 1(-1 because of the sign) in front of the parenthesis and distribute it to the other number and so x will become -x, 3y will become -3y and -z will become z because two negatives make a positive.

4 0

3 years ago

Suzanne needs material for her school project. She buys 5.50 yards of material at $3.87 a yard. What is the total cost of the ma

ASHA 777 [7]

5.50
x 3.87
----------
21.285

5 0

3 years ago

Read 2 more answers

10. Simplify the rational expression by rationalizing the denominator. 3 sqrt 160/sqrt 1350x A) 2 sqrt 15x/15x B) 3 sqrt 160/135

Viefleur [7K]

The simplified expression by rationalizing the denominator is (C) $\frac{4 \sqrt{15x} }{15x}$ .

First we must simplify the expression:
$\frac{3 \sqrt{160} }{\sqrt{1350x} } = \frac{12 \sqrt{10} }{15 \sqrt{6x} } = \frac{4 \sqrt{10} }{5 \sqrt{6x} }$

Then we factor the rational parts and cancel it out:
$\frac{4 \sqrt{2} \sqrt{5} }{5 \sqrt{2} \sqrt{3x} } = \frac{4\sqrt{5} }{5\sqrt{3x} }$

Then we rationalize the expression:
$\frac{4\sqrt{5} }{5\sqrt{3x} } * \frac{\sqrt{3x} }{\sqrt{3x} } = \frac{4 \sqrt{15x} }{5*3x} = \frac{4 \sqrt{15x} }{15x}$

<span>Finally, the simplified expression by rationalizing the denominator is (C) $\frac{4 \sqrt{15x} }{15x}$ .</span>

7 0

3 years ago

A $50 item was marked up 20%. What is the total increased cost of the item?

GenaCL600 [577]

They increased it by $10.

It ended up costing $60.

Hope this helps.

4 0

3 years ago

PLEASEEEE HELPPP with both of them if you can!

Jet001 [13]

Answer:

Tenacious tennis: y=5x+120

Totally Tennis: 8x

Toys r us: y=20x

Lego club: y=17x+36

Step-by-step explanation:

y=cost x= tennis court usage charge

Tenacious tennis: y=5x+120

Totally Tennis: 8x

8.)

y=cost x=lego set

Toys r us: y=20x

Lego club: y=17x+36

3 0

3 years ago