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3 years ago

X+y= -7 and -10x+2y=10

Mathematics

1 answer:

Brums [2.3K]3 years ago

8 0

Answer:

x = 4

y = 3

Step-by-step explanation:

x = 10 - 2 y

substitute x = 10 - 2y into 2x - y = 5

20- 5y = 5

then

y = 3

and

x = 4

Mark brainliest

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What is the simplified form of 5 square root x^4 • 5 square root x^4

laiz [17]

Answer: C

Step-by-step explanation:

You can write each term into a fraction.

$\sqrt[5]{x^4}$ becomes $x^4^/^5$

When you multiply 2 terms with the same base, you add the exponents.

$x^4^/^5*x^4^/^5=x^4^/^5^+^4^/^5=x^8^/^5$

$x^8^/^5$ is also the same as $x\sqrt[5]{x^3}$

You get this because $\sqrt[5]{x^8} =\sqrt[5]{x*x*x*x*x*x*x*x}$ . When you pull out 5 os x, you are left with x³ on the inside.

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3 years ago

Can somebody help me with this!?

Daniel [21]

Answer:

24 $\pi$ /5

Step-by-step explanation:

The way I think about areas of sectors is a fraction of the pie. You know what percentage of the "pie" (in this case, circle) you want, because they give you the angle of the sector and you know a circle always has 360°. So technically, you're trying to find 48/360 th of the entire area (36 $\pi$ ). If you're using a calculator, it doesn't matter if you simplify the fraction, but if you're doing it by hand simplifying makes everything a lot easier.

The equation will be:

Area = 24/180 × 36 $\pi$

= 2/15 × 36 $\pi$

= 72 $\pi$ /15

= 24 $\pi$ /5

I hope this helped! Also, in Khan Academy, when you get an answer wrong/right, you can view their explanation by clicking "hint" or sometimes "see how we did it" shows up.

4 0

3 years ago

Blank divided by 12 equals 7 with a remainder of 1

Elodia [21]

7x12=84, plus 1 equals 85.

85/12=7, remainder of 1.

The answer is 85.

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2 years ago

Write the absolute value equations in the form |x−b|=c (where b is a number and c can be either number or an expression) that ha

nalin [4]

Answer:

i don't know

Step-by-step explanation: