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algol [13]
3 years ago
15

Expand, and simplify the following expressions a. (2x+y)(x+y) + (2x-y)(x+y)​

Mathematics
2 answers:
tankabanditka [31]3 years ago
7 0

Step-by-step explanation:

2x²+2xy+yx+y²+2x²+2xy-yx+y²

2x²+2x²+2xy+2xy+yx-yx+y²+y²

2x²+2x²+2xy+2xy

4x²+4xy

ludmilkaskok [199]3 years ago
7 0

Your Answer is in the above image.

Hope this solution may help you

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How do you solve the equation -3 1/3 = -1/2g
Arturiano [62]

g=\frac{20}{3}

Solution:

Given expression is -3\frac{1}{3}=\frac{-1}{2}g.

To solve the given expression:

Let us first convert the mixed fraction into improper fraction.

⇒ -3\frac{1}{3}=\frac{-1}{2}g

⇒ -\frac{(3\times 3 )+1}{3}=\frac{-1}{2}g

⇒ -\frac{10}{3}=\frac{-1}{2}g

Do cross multiply on both sides of the equation.

⇒ -10\times2=(-1\times3)g

⇒ -20 = -3g

⇒ \frac{-20}{-3}=g

Both minus in the numerator and denominator are cancelled.

⇒ \frac{20}{3}=g

Hence, g=\frac{20}{3}.

3 0
3 years ago
What is the solution for this eqaution:-5x – 25 = 5x + 25​
Kisachek [45]

Answer:

x = -5

Step-by-step explanation:

Start by adding the 5x to each side of the equation to the left to get...

-25 = 5x + 25 + 5x

Then you would add 25 to each side of the equation to get...

0 = 10x + 25 + 25

Adding on, you would simplify this step to get...

0 = 10x +50

You would now have to make the x variable on one side alone so you would subtract 50 from both sides of the equation again to get...

-50 = 10x

Finally you would divide both sides of the equation by 10 to get x alone...

-50/10 = 10x/10

And simplify that to get...

x = -5

3 0
3 years ago
Nancy and her sister went to the store together. After the store, Nancy walked 2 blocks west to get a coffee and her sister walk
Dima020 [189]

Answer:

5 blocks

Step-by-step explanation:

8 0
3 years ago
Matt is given a jar with eight marbles, six of which are red and two of which are green. Matt then randomly draws marbles withou
Ber [7]

Answer:

as a percentage it is: 0.25 x 0.2 =0.05 or 5%
but as a common fraction it is: 5/100 or 1/20

Step-by-step explanation:

8 0
2 years ago
Joseph is building a cone using modeling clay. The cone has a radius of 6 cm and a height of 12 cm. Joseph adds additional clay,
dmitriy555 [2]
<span>Cone Volume = (<span>π<span> • r² •<span> h) ÷ 3

Original cone = (3.14 * 6^2 * 12) / 3
</span></span></span></span>
<span><span>Original cone = 452.16 </span> cc

</span>Larger cone =  <span>(3.14 * 6^2 * 18) / 3 = </span> <span> <span> <span> 678.24 </span> </span> </span> cc

Difference = <span>(678.24 -452.16) = </span> <span> <span> <span> 226.08 </span> </span> </span> cc


3 0
3 years ago
Read 2 more answers
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