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Bad White [126]

3 years ago

10

Hope watches a movie Friday night that was two and one-half hours long. On Saturday, she watched a documentary half as long as F

riday’s movie. How long was the documentary?

2 answers:

Zolol [24]3 years ago

5 0

Answer:

1 hour and 15 minutes thats how long the documentary was

Anna35 [415]3 years ago

5 0

Movie friday night was 2 hours and 30 minutes long.

The documentary was half as long as Friday's movie.

So it will be: $\frac{2 hours .and. 30 minutes}{2} = 1 hour.and .15 minutes$

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What is the quotient of complex numbers below? QUESTION IS IN THE PICTURE PLEASE HELP

scZoUnD [109]

Answer:

B (3 - i)

Step-by-step explanation:

To find the quotient of the complex numbers you must multiply the numerator and the denominator by the conjugate of the denominator

Example: The conjugate of (3 - i) is (3 + i)

$\frac{8-6i}{3-i} *\frac{3+i}{3+i}$

$(3-i)(3+i)=9-i^{2}$

$i^{2}=-1$

So $(3-i)(3+i)=9--1=10$

Denominator= 10

$(8-6i)(3+i)=24+8i-18i-6i^{2}$

$24-10i-6i^{2} =24-10i-6(-1)=24-10i+6=30-10i$

Numerator = 30 - 10i

Then $\frac{30-10i}{10} =\frac{30}{10}-\frac{10i}{10} = 3 - i$

The correct answer is B

5 0

3 years ago

zhannawk [14.2K]

<u>ANSWER</u>

(Choice A)

-4(3e+4)

<u>EXPLANATION</u>

The given expression is

$- 7 + 3( - 4e - 3)$

We expand to get:

$- 7 - 12e - 9$

We regroup the terms to get:

$- 12e - 9 - 7$

Simplify now to get:

$- 12e - 16$

We now factor -4 to obtain:

$- 4(3e + 4)$

The correct choice is A.

3 0

3 years ago

Read 2 more answers

Find the value of <img src="https://tex.z-dn.net/?f=%246%2B%5Cfrac%7B1%7D%7B2%2B%5Cfrac%7B1%7D%7B6%2B%5Cfrac%7B1%7D%7B2%2B%5Cfra

Paul [167]

Let

$x = 6 + \dfrac1{2 + \dfrac1{6 + \dfrac1{2 + \cdots}}}$

Then

$x = 6 + \dfrac1{2 + \dfrac1x}$

and solving for x gives

$x = 6 + \dfrac x{2x + 1}$

$x = \dfrac{13x + 6}{2x + 1}$

$x(2x+1) = 13x + 6$

$2x^2 + x = 13x + 6$

$2x^2 - 12x - 6 = 0$

$x^2 - 6x - 3 = 0$

By the quadratic formula,

$x = 3 \pm 2\sqrt{3}$

but x must be a positive number, so only the positive square root solution is valid.

$x = 3 + 2\sqrt{3}$

We identify a = c = 3 and b = 2, so a + b + c = 8.

3 0

3 years ago

Find the sum of the following geometric sequences. d) 3 terms a= 16 r=3/4

kodGreya [7K]

Answer:

S₃ = 37

Step-by-step explanation:

given a₁ = 16 and r = $\frac{3}{4}$ , then

a₂ = a₁ × $\frac{3}{4}$ = 16 × $\frac{3}{4}$ = 12

a₃ = a₂ × $\frac{3}{4}$ = 12 × $\frac{3}{4}$ = 9

then

S₃ = a₁ + a₂ + a₃ = 16 + 12 + 9 = 37

7 0

2 years ago

Tell me the correct answer I’m having trouble with this question

adell [148]

The picture is blocked. Sorry

8 0

3 years ago