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2 years ago

EXPERT HELP, I'LL GIVE BRAINLIEST:

Mathematics

1 answer:

DanielleElmas [232]2 years ago

3 0

Answer:

B or A.

Step-by-step explanation:

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X^2 - y^2 = 100

luda_lava [24]

Answer:

Step-by-step explanation:

Let's start by rewriting the second equation in terms of "x":

$x+y=5$

Subtract y from both sides:

$x=5-y$

Now, substitute "5-y" for "x" in the first equation:

$(5-y)^2-y^2=100$

Note that:

$(a-b)^2=a^2-2ab+b^2$

$25-10y+y^2-y^2=100$

Cancel out like terms:

$25-10y=100$

Subtract 25 from both sides:

$-10y=75$

Divide both sides by -10

$y=\frac{75}{-10}=\frac{15}{-2}=-\frac{15}{2}$

Now, substitute this value back into either of the equations to solve for x.

$x+y=5\\x-\frac{15}{2}=5\\$

Add 15/2 to both sides:

$x=5+\frac{15}{2}\\x=\frac{10}{2}+\frac{15}{2}\\x=\frac{25}{2}$

Now, find the difference:

$x-y=\frac{25}{2}-(-\frac{15}{2})=\frac{25}{2}+\frac{15}{2}=\frac{40}{2}=20$

8 0

2 years ago

WHOEVER ANSWERS THIS !ST IS GETTING ALL OF MY POINTS<br> NNOT A JOKE PLEASEHELP ME FAST!

Mazyrski [523]

what number would you like answered

6 0

3 years ago

Read 2 more answers

5/6 of the students completed homework last night, but only 3/4 of those students did their work correctly. How many students di

Kisachek [45]

Answer:

Step-by-step explanation:

first your going to do the least common multiple which is 12 for both then your going to subtract because were trying to find out how many students did there work correctly. so, whatever you do to the denominator you do to the numerator so, its going to be 10/12 - 9/12= 1/12 is your answer.

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2 years ago

Answer below please i need it immediately

DIA [1.3K]

Answer:

sss

Step-by-step explanation:

i think because 3 sides are given

3 0

2 years ago

rectangular prism ,wit measurements of 1.2 ft wide,3 ft long, and 4.5 ft tall.What is the volume of the crate in cubic inches?

Taya2010 [7]

Volume of a rectangular prism is l*h*w
1.2*3*4.5= 16.2
The answer is 16.2 cubic inches

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2 years ago