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2 years ago

15

How do I find x and y for the problem below? -7x+2y=-13 1x-2y=11

1 answer:

d1i1m1o1n [39]2 years ago

7 0

For the first one :)))))))

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How do I work this problem out.

astraxan [27]

First you should find the area of the rectangle in the middle.
A: 9 x 6 = 54
Then you can find the area of the triangle on the right.
A: 6 x 5 = 30/2 = 15
Then you can do the triangle on the right.
11-9 = 2
A: 2 x 6 = 12/2 = 6
Then you can add it all together.
15 + 6 + 54 = 74
So the area of the irregular shape is 74.

I hope this helps!

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The sales tax rate in a certain state is 8%. How much would you pay in total for a taxable item that costs $25.25?

faust18 [17]

25.25x 0.08= 2.02 so answer is 2.02

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2 years ago

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Will give brainiest algebra 2

mars1129 [50]

The sum of squares of numbers is: 13

Step-by-step explanation:

Let x and y be two numbers

Then,

Difference of the squares of the numbers will be:

$x^2-y^2$

Product will be:

$xy$

Given identity is:

$(x^2+y^2)^2=(x^2-y^2)^2+(2xy)^2$

Given values are:

Difference of the squares of the numbers= $x^2-y^2=5$

Product of numbers = xy = 6

Putting the values in the identity

$(x^2+y^2)^2=(5)^2+[2(6)]^2\\=25+(12)^2\\=25+144\\=169$

As we have to only find x^2+y^2

Taking square root on both sides

$\sqrt{(x^2+y^2)^2}=\sqrt{169}\\x^2+y^2=13$

The sum of squares of numbers is: 13

Keywords: Identities

Learn more about identities at:

#LearnwithBrainly

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3 years ago

Given m||n, find the value of x.<br> +<br> 104<br> Answer:

bearhunter [10]

Answer:

x = 104° because they are alternate interior angles and alternate interior angles are equal

Step-by-step explanation:

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Joseph read 9 books in 15 months. what was his rate of being in books per month?

inna [77]

Answer:

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Step-by-step explanation:

Divide 9 by 15 to get 0.6 books a month

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2 years ago