3 years ago

Which expression is equivalent to sin^2 x-sin x - 2/sin x -2

1 answer:

3 0

Set sin x to a variable, i.e. u

u^2-u-2/u-2.

Factor:

(u-2)(u+1)/(u-2)

Simplify by canceling the u-2s...

leaving u+1. Since we substituted u for sin x...
the answer is A. sin x + 1

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HELP!!! i am stuck here

irina1246 [14]

Answer:

<em>2.5 hours</em>

<u>Skills needed: Speed, distance, time problems</u>

Step-by-step explanation:

1) We are given speed and distance, and have to find out the the time (in hours).

- In terms of units, everything is matched up (Since distance and speed use kilometers, and speed and time use hours).

- Time is always the distance you travelled (how far) divided by how fast you travelled (the rate/speed)

---> We can use the formula for time: $t=\frac{d}r$

t= time

d=distance

r=rate/speed

2) Now, let's plug in for distance and rate.

---> $t=\frac{7.5}{3} = 2.5$

2.5 hours is the answer.

4 0

2 years ago

M(-5, 2) and N(5, 2) are the endpoints of the segment MN on the coordinate plane. What is the length of ?

VikaD [51]

The line segment is 10 units long

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3 years ago

Read 2 more answers

Lin runs 5 laps around a track in ten minutes how many laps per minute

eimsori [14]

2 minutes per lap. I think

6 0

2 years ago

An 18 foot rope is extended from the top of a tree to a stake in the ground. What is the measure of the angle, to the nearest de

poizon [28]

Answer:

6 ugly

Step-by-step explanation:

6 x 3 equals 18

5 0

3 years ago

PLZZZZ HELP If Tyler deposits $1500 of the $3200 he has earned in an account that pays 4% simple interest, how much will he have

mash [69]

$\bf \qquad \textit{Simple Interest Earned Amount}\\\\
A=P(1+rt)\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{original amount deposited}\to& \$1500\\
r=rate\to 4\%\to \frac{4}{100}\to &0.04\\
t=years\to &5
\end{cases}
\\\\\\
A=1500(1+0.04\cdot 5)\implies A=1800$

now, he had 3200, he took 1500 for deposit, so, 3200 - 1500, he had left in his pocket 1700.

so after 5 years, he'll have 1700 + 1800.

8 0

3 years ago