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3 years ago

10

What is the sum of the complex number 2+3i and 4+8i, where i=√-1?

1 answer:

ser-zykov [4K]3 years ago

3 0

2+3i+4+8i
2+4+3i+8i
6+11i

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A girls hair is 12 3/8 inches long if she had 2 1/2 inches cut off how long will her hair be ?

Darya [45]

Answer: 9 and 7eights

Step-by-step explanation: Divide using long division. The whole number portion will be the number of times the denominator of the original fraction divides evenly into the numerator of the original fraction, and the fraction portion of the mixed number will be the remainder of the original fraction division over the denominator of the original fraction. Which would equal, 9 and 7eights.

5 0

3 years ago

What is the inverse of f(x) = sqft x+ 3

grin007 [14]

Answer:

$f^{-1} (x)=x^{2} -3$

Step-by-step explanation:

Given the function

$f\left(x\right)=\sqrt{x+3}$

We can find the inverse function by exchanging x and y, and then solve for y.

$y=\sqrt{x+3}$

Replace x with y.

$x=\sqrt{y+3}$

square both sides

$x^2=y+3$

$y=x^2-3$

Hence,

$f^{-1} (x)=x^{2} -3$

8 0

3 years ago

Which description is paired with its correct expression? seven less than the quotient of two and a number squared, increased by

Svetach [21]

Answer:

the second description and and expression is correct

Step-by-step explanation:

the first one is wrong because it says 7 minus while it should be minus 7

6 0

3 years ago

Solve the system algebraically. Check your work. 5x + 2y = 10 3x + 2y = 6 Make sure there are NO SPACES in your answer. Be sure

e-lub [12.9K]

For the first equation its y=5-2/5x or y=-2/5x+5

5 0

3 years ago

Read 2 more answers

Please help me on number 3

Mars2501 [29]

circle=360°

360÷10=36

36÷3=12

Answer is 12

4 0

3 years ago