What is the sum of 12 – 5i and –3 + 4i?

A. –16 + 63i
B. 9 – i
C. 9 – 9i
D. 15 – 9i

Answer:

BC = 1 6.45

Step-by-step explanation:

The way it is written, BC is the  hypotenuse

BC^2 = AB^2 + CA^2             Substitute the numbers for AB and CA

BC^2 = 13.9^2 + 8.8^2           Perform the squares

BC^2 = 193.21 + 77.44           Add the right side

BC^2 = 270.65                      Take the square root of both sides

BC = 16.45

Answer:

Step-by-step explanation:

Answer:

[tex]4x + 1.3 = - 7.9 \\ 4x = - 1.3 - 7.9 \\ 4x = - 9.2 \\ x = \frac{-9.2}{4} \\ \boxed{x =- 2.3}[/tex]

6.3x10^17

the last option  correct one

Answer:

6.3x10^17

Step-by-step explanation:

:)

Answer:

27

Step-by-step explanation:

Step-by-step explanation:

Start by finding (fog)(x)

To find this function, substitute x=

x−1

4

That is g(x) into f(x)

⇒(f∘g)(x)=(

x−1

4

)

2

−2(

x−1

4

)+5

=

(x−1)

2

16

−

x−1

8

+5

Now substitute x=3

⇒(f∘g)(3)=

(3−1)

2

16

−

3−1

8

+5

=

4

16

−

2

8

+5=4−4+5=5.

Hope it helps:)

Answer:

2,560

Step-by-step explanation:

The equation v(2) is equal to 2560.

A function has an input and an output.

A function can be one-to-one or onto one.

It simply indicated the relationships between the input and the output.

Example:

f(x) = 2x + 1

f(1) = 2 + 1 = 3

f(2) = 2 x 2 + 1 = 4 + 1 = 5

The outputs of the functions are 3 and 5

The inputs of the function are 1 and 2.

We have,

v(t) = 320 x 4t ________(1)

v(t) represents the number of views v of the video, t days since Jada saw the video.

We see that,

v(t) is a function where t is the input and v(t) is the output.

Now,

Substitute t = 2 in (1)

v(t) = 320 x 4 x 2

    = 320 x 8

    = 2560

Thus,

The v(2) is equal to 2560.

Learn more about functions here:

https://brainly.com/question/28533782

#SPJ2

Answer:

I think 3 if im wrong im sorry.

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

Answer:

The answer would be B x=-25

Step-by-step explanation:

Answer:

x=18, 4x=72, x=90

Step by-step explanation:

180 degrees = 90 degrees + x+ 4x

180 degrees = 90 +5x

180-90=5x

90=5x

x=18 degrees

right angle: 90 degrees

4x= 72 degrees

Answer:

b<25

Step-by-step explanation:

Answer:

b ≥ 25.

Step-by-step explanation:

The statement contains the phrase “A minimum of” meaning that the amount of candy bard in each bag could either be anything higher than 25, or just 25. Basically just any number that is greater than or equal to 25. Therefore, you should use the greater than or equal to sign after the variable b and then but the number 25 after that.

I hope this helps you. Have a nice day.

Answer:

see in step 2, he added 20 at x² + 8x - 70 and 0

but he must add 70 at  x² + 8x - 70 and 0 to have x² + 8x = 70

Step-by-step explanation:

Answer:B

Step-by-step explanation: I took the test already trust me it is correct

Answer:

Step-by-step explanation:

I think it's the first last one because proportional means it increases by the same each time so the last one fits in that category

Answer:

Number 1 is proportional, 2 is non proportional, 3 non proportional, 4 non proportional.

Step-by-step explanation:

You divide . 4÷1=4 , 8÷2=4, 12÷3=4, the unit rate MUST be the same !!!! And if there's 0 0, that doesn't count so like if your other 2 have the same unit rate it would still be proportional.

When multiplying the 2 and the -12 it would be -24, not 24. Which if my mental math is correct, would make the answer 6

Edit:

Note that subtracting a negative is the same as adding the absolute value.

so:

-24-(-30)

changes to

-24+30

and it equals

6

Answer: The slope of the line would be 1.25!

Step-by-step explanation: I'll provide a screenshot of the graph I have made in a second! (:

Answer:

Im not sure abt the A part. BUT I do know b and c.

Answer: B) 3x^2-13x-30=0

(3x+5) (x-6)=0

3x+5=0          x-6=0

3x=-5               x-6=0

Answers that are the Roots: [ x=-5/3]    and [x=6]

Answer: C) Set factors equal to 0 to find the roots.

Step-by-step explanation:

Don't really need one but hope this helps.

Answer:

The answer is x= 3

Step-by-step explanation:

Divide each term by 3 and simplify.

Hoped this helped!

Could I please get brainly?

Answer:

a=23

Step-by-step explanation:

angle a, b,c and are congruent

3a-9+3a-9+3a-9=180

combine like terms

9a-27=180

add 27 on both sides

9a=209

divide by 9 on both sides

a=23

Answer:

Step-by-step explanation:

2

Answer:

4

Step-by-step explanation:

Slope is rise over run, but you can also find the slope between two points with this formula:

[tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

12-4=8

----------

6-2=4

8/2=4

Answer:

a. 40 yards

b. 30 more yards

Step-by-step explanation:

a. 30²+x²=50²

900+x²=2500

x²=1600

x=40

b. It would be 60 yards if she just went to the Elm cabin, but if she went down to the mess hall it would be 50 yards, and then 40 more yards to Elm. 90 is 30 more than 60.

(hope this helps!)

Answer:

45º

Step-by-step explanation:

On unit circle 45º = √2/2,√2/2 so its 45º trust me

Answer:

it is 45

Step-by-step explanation:

i got it right on the test

Answer:

function

Step-by-step explanation:

Answer:i Believe its a. non Function  sorry if. Im. Wrong

Answer:

81

Step-by-step explanation:

Answer:

Is D for your question

Step-by-step explanation:

hope this helps

Answer:

answer is D

step by step

because i looked up the answer

Answer:cute i love that show

Step-by-step explanation:

Answer:

y=9

Step-by-step explanation:

Answer:

2x - 10/3

Step-by-step explanation: