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2 years ago

Help me pleaseeeeeee

Mathematics

1 answer:

nikklg [1K]2 years ago

6 0

Answer:

y=-2x-6

Step-by-step explanation:

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3 Which of the following represents a function? A {(-2, 1), (-2, 0), (-2, 1), (-2, 2)} B {(-1,0), (0, 1), (1, 2), (2, 3)} C {(1,

solong [7]

Answer:

Step-by-step explanation:

because they want you to look for the number who repeat in the right like A (

4 0

2 years ago

Read 2 more answers

Express the quotient of z1 and z2 in standard form given that <img src="https://tex.z-dn.net/?f=z_%7B1%7D%20%3D%20-3%5Bcos%28%5C

Lesechka [4]

Answer:

Solution : $-\frac{3}{4}-\frac{3}{4}i$

Step-by-step explanation:

$-3\left[\cos \left(\frac{-\pi }{4}\right)+i\sin \left(\frac{-\pi \:}{4}\right)\right]\:\div \:2\sqrt{2}\left[\cos \left(\frac{-\pi \:\:}{2}\right)+i\sin \left(\frac{-\pi \:\:\:}{2}\right)\right]$

Let's apply trivial identities here. We know that cos(-π / 4) = √2 / 2, sin(-π / 4) = - √2 / 2, cos(-π / 2) = 0, sin(-π / 2) = - 1. Let's substitute those values,

$\frac{-3\left(\frac{\sqrt{2}}{2}-\frac{\sqrt{2}}{2}i\right)}{2\sqrt{2}\left(0-1\right)i}$

= $-3\left(\frac{\sqrt{2}}{2}-\frac{\sqrt{2}}{2}i\right)$ ÷ $2\sqrt{2}\left(0-1\right)i$

= $3\left(-\frac{\sqrt{2}i}{2}+\frac{\sqrt{2}}{2}\right)$ ÷ $-2\sqrt{2}i$

= $\frac{3\left(1-i\right)}{\sqrt{2}}$ ÷ $2\sqrt{2}i$ = $-3-3i$ ÷ $4$ = $-\frac{3}{4}-\frac{3}{4}i$

As you can see your solution is the last option.

3 0

2 years ago

Angle A and Angle B are vertical angles. If Angle A measures 45 degrees,

Over [174]

Answer:

135

Step-by-step explanation:

135+45=180

5 0

2 years ago

Evaluate the expression below when x= -2

KatRina [158]

Answer: -1

Step-by-step explanation: To evaluate this problem, the first thing we want to do is plug in the appropriate value for <em>x</em>.

When we do that, we get $\frac{(-2)^2- 8}{-2 + 6}$

A good rule of thumb for problems that involve division bars is to simplify what's above the division bar as much as you can and what's below the division bar as much as you can before you do your dividing.

So up top if we follow our order of operations, the first thing we want to do is square the -2 before we subtract. So -2² is +4.

So in our numerator we have 4 - 8.

Down below, we have -2 + 6 which is +4.

4 - 8 is -4 and -2 + 6 is +4.

$So$ $we$ $have$ $\frac{-4}{+4}$ $which$ $reduces$ $to$ $-1.$