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3 years ago

If a = b and the supplementary of

Mathematics

1 answer:

shusha [124]3 years ago

8 0

It all equals ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc

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What is the image of the point (-3,-6) on rotation of 90 degrees about the origin ?

SOVA2 [1]

Answer:

(- 6, 3 )

Step-by-step explanation:

Under a rotation about the origin of 90°

a point (x, y ) → (y, - x ), thus

(- 3, - 6 ) → (- 6, 3 )

6 0

3 years ago

Sam's father bought a cat for $26,304. He expects to pay for it in 24 equal monthly payments. How much will Sam's father have to

podryga [215]

Price of the car= $26304
Monthly payments= 24
Just divide
26304/24 which equals $1096

3 0

3 years ago

D = rt, for r Someone please help me out?

lianna [129]

Answer:

Hello!!! Princess Sakura here ^^

Step-by-step explanation:

All you have to do is divide the t on both sides and you'll get...

$r=\frac{d}{t}$

4 0

3 years ago

In a study of wait times at an amusement park, the most popular roller coaster has a mean wait time of 17.4 minutes with a stand

Ann [662]

Answer: A: 0.0031

Step-by-step explanation:

Given : In a study of wait times at an amusement park, the most popular roller coaster has a mean wait time of 17.4 minutes with a standard deviation of 5.2 minutes.

i.e. $\mu=17.4$ and $\sigma=5.2$

We assume that the wait times are normally distributed.

samples size : n= 30

Let x denotes the sample mean wait time.

Then, the probability that the mean wait time is greater than 20 minutes will be :

$P(x>20)=1-P(x\leq20)\\\\=1-P(\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}\leq\dfrac{20-17.4}{\dfrac{5.2}{\sqrt{30}}})\\\\=1-P(z\leq2.74)\ \ [\because\ z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}]\\\\=1-0.9969\ \ [\text{ By z table}]\\\\=0.0031$

Hence, the probability that the mean wait time is greater than 20 minutes.= 0.0031

Thus , the correct answer is A: 0.0031 .

5 0

3 years ago

The floor of a rectangular room will be tiled with square tiles that measure 3 inches on each side. The room is 109 inches long

Fynjy0 [20]

Find the total area of the room
109 * 103 = 11227 inches^2
the tile takes up 3*3 = 9 inches^2
11227/9 = 1247.4
You need 1247 tiles and 0.4 of a tile.
Or you could just get 1248 and cut the last tile a bit :P

Hope this helps :)

4 0

3 years ago

Read 2 more answers