3 years ago

A pizza was cut into 12 pieces. Alexander eats 1/3 of the pizza, Rachel eats

Mathematics

1 answer:

erma4kov [3.2K]3 years ago

5 0

Answer:

3/4

Step-by-step explanation:

1/3 plus 1/4 plus 1/6 equals 3/4

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What is the result of subtracting the second equation from the first?

Ronch [10]

Answer:

-5x + 0y = -11

The y terms are eliminated

Step-by-step explanation:

- 4x – 2y = -2

X - 2y = 9

We want to subtract the second equation from the first

Distribute a minus sign to all the terms in the second equation

- 4x – 2y = -2

X - 2y = 9

= (-5x + 0y = -11)

6 0

3 years ago

Find all solutions to the equation (sinx-cosx)^2=1

svetoff [14.1K]

Answer:

$x=\dfrac{\pi k}{2},\ k\in Z.$

Step-by-step explanation:

Simplify the equation $(\sin x-\cos x)^2=1:$

$\sin^2 x-2\sin x\cos x+\cos ^2x=1,\\ \\ (\sin^2x+\cos^2x)-2\sin x\cos x=1.\\$

Since

$\sin^2 x+\cos^2 x=1$

and

$2\sin x\cos x=\sin 2x,$

we have

$1-\sin 2x=1,\\ \\\sin 2x=0,\\ \\2x=\pi k,\ k\in Z,\\ \\x=\dfrac{\pi k}{2},\ k\in Z.$

8 0

4 years ago

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can someone please help? I put random numbers for the first 2 but I need help with the last one - i’ll give brainliest

stealth61 [152]

Answer:

(x+x)^2=4-x

Step-by-step explanation:

I think, don't be mad if I'm wrong!

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3 years ago

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Hello, help me find the x-intercept. Please state the answer and explain how you got it. Thank you.

babunello [35]

Answer:y intercept is -2

Step-by-step explanation:

Because the equation line formula

Y=mx+b

Where m is slope and b is y- intercept

Therefore

Y=-4x-2

Your b is the -2

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3 years ago

Can I get some help on these please

Gelneren [198K]

Answer:

1. $\frac{2}{5}$

2. $\frac{5}{8}$

3. Proper Fraction

4. Mixed Fraction

6. $\frac{23}{5}$

7. $\frac{19}{5}$

8. 11 $\frac{2}{3}$

9. 50 $\frac{4}{5}$

10. $\frac{1}{8}$

Sorry, didn't see the last question

Hope this helped!

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3 years ago

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