3 years ago

The complement of a right angle is an obtuse angle. true or false.

1 answer:

6 0

False because the obtuse angle is to large to complement the right angle to diffrent angles can not be both of their compliments

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The time to fly between New York City and Chicago is uniformly distributed with a minimum of 120 minutes and a maximum of 150 mi

rewona [7]

Answer:

a. 8.66 minutes

Step-by-step explanation:

Since the flight times are uniformly distributed, the standard deviation can be calculated as follows:

$\sigma = \frac{b-a}{\sqrt{12}}$

Where 'b' is the maximum flight time (150 minutes) and 'a' is the minimum flight time (120 minutes):

$\sigma = \frac{150-120}{\sqrt{12}}\\\sigma = 8.66\ minutes$

The distribution's standard deviation is 8.66 minutes.

4 0

3 years ago

3 x + 2 y = − 6. help me find the y and the x x y -4 0 0 –3

Maru [420]

Answer:

x = 0 and y = -3

Step-by-step explanation:

3 (0) = 0

2 (-3) = -6

So the answer would be x = 0 and y = -3

5 0

3 years ago

Mr.Spoke is a salesman at Pop's Cycle shop. Each month he earns 800$ plus 7% of his total monthly sales. How much did he earn la

Aliun [14]

7% of $9,200 is $644. Add $800 + $644 to get $1,444
ANSWER:
$1,444

5 0

3 years ago

Gravel is being dumped from a conveyor belt at a rate of 15 ft3/min, and its coarseness is such that it forms a pile in the shap

gayaneshka [121]

Answer:

0.13 ft/min

Step-by-step explanation:

We are given that

$\frac{dV}{dt}=15ft^3/min$

We have to find the increasing rate of change of height of pile when the pile is 12 ft high.

Let d be the diameter of pile

Height of pile=h

d=h

Radius of pile,r= $\frac{d}{2}=\frac{h}{2}$

Volume of pile= $\frac{1}{3}\pi r^2 h=\frac{1}{12}\pi h^3$

$\frac{dV}{dt}=\frac{1}{4}\pi h^2\frac{dh}{dt}$

h=12 ft

Substitute the values

$15=\frac{1}{4}\pi(12)^2\frac{dh}{dt}$

$\frac{dh}{dt}=\frac{15\times 4}{\pi(12)^2}$

$\frac{dh}{dt}=0.13ft/min$

7 0

3 years ago

What percent tip did the customer leave If he spent $24 on $12 meal?

kifflom [539]

Answer:

he gave them 12 extra

Step-by-step explanation:

12-24 is 12

3 0

3 years ago