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Serjik [45]
2 years ago
5

Expand 2x(5x-2) Help please ?

Mathematics
2 answers:
Anit [1.1K]2 years ago
5 0

Answer: 10x^2 - 4x

Step-by-step explanation:

To expand, you are not simplifying, so multiplying out is the answer here. To do this, use the distributive property. The distributive property in this case means that if you are multiplying one number by a whole expression inside parenthesis, multiply the one number by each term in the expression:

2x(5x - 2)

= 2x(5x) + 2x(-2)

= 10x^2 - 4x

alina1380 [7]2 years ago
3 0

Answer:

10x²-4x

Step-by-step explanation:

2x(5x-2)

clearing brackets by multiplying

=10x²-4x

i hope it will help you

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I have the equations 8x + 3y = 20.50 and 4x + 5y = 22.50<br> How do I solve for x and y?
snow_tiger [21]
8x + 3y = 20.50
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4x+5y=22.50
=
4x-2y=-2, so you have to divide each number by 2, then
2x-y=-1, so

-y=-1-2x /-1, y=1+2x, then replace it with one original equation like the first one for instance:
8x+3(1+2x)=20.50, then
8x+3+6x=20.50, then
14x=20.50-3
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x=1.25, then solve y:\
y=1+2*(1.25)
y=1+2.5
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6 0
3 years ago
4x + 3y = 8<br>2x - y=9​
Alex17521 [72]

Step-by-step explanation:

Follow my steps. Sorry im bit untidy .

Follow these 1°,2°,3°

8 0
3 years ago
Find the quotient of 3/5 and 2/3<br> Give your answer as a fraction in its simplest form.
maria [59]
The quotient is 9/10
6 0
2 years ago
Expand the expression (r-4)(8)
Gnom [1K]

R - 4 x 8 is the expanded expression

7 0
3 years ago
If y varies inversely with x<br> and y is 10 when x is 5,<br> then what is y when x is 2?
Jobisdone [24]

9514 1404 393

Answer:

  25

Step-by-step explanation:

Inverse variation means ...

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For the given values, we can find k to be ...

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Then for x=2, we have ...

  y = 50/x

  y = 50/2

  y = 25 . . . when x=2

6 0
3 years ago
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