3 years ago

Solve 8 + 3 = −13, for each step, identify the property used

Mathematics

1 answer:

Verizon [17]3 years ago

3 0

Answer:

-2

Step-by-step explanation:

You might be interested in

Air is being pumped into a spherical balloon at a rate of 5 cm^3/min. Determine the rate at which the radius of the balloon is i

Romashka-Z-Leto [24]

0.08 cm/min

Step-by-step explanation:

Given:

$\dfrac{dV}{dt}=5\:\text{cm}^3\text{/min}$

Find $\frac{dr}{dt}$ when diameter D = 20 cm.

We know that the volume of a sphere is given by

$V = \dfrac{4\pi}{3}r^3$

Taking the time derivative of V, we get

$\dfrac{dV}{dt} = 4\pi r^2\dfrac{dr}{dt} = 4\pi\left(\dfrac{D}{2}\right)^2\dfrac{dr}{dt} = \pi D^2\dfrac{dr}{dt}$

Solving for $\frac{dr}{dt}$ , we get

$\dfrac{dr}{dt} = \left(\dfrac{1}{\pi D^2}\right)\dfrac{dV}{dt} = \dfrac{1}{\pi(20\:\text{cm}^2)}(5\:\text{cm}^3\text{/min})$

$\:\:\:\:\:\:\:= 0.08\:\text{cm/min}$

3 0

3 years ago

An escalator lifts people to the second floor of a building 25 feet above the first floor. The escalator rises at a 30 degree an

ch4aika [34]

9514 1404 393

Answer:

50 ft

Step-by-step explanation:

The side lengths in a 30-60-90 triangle have the ratios 1 : √3 : 2. The longest side is 2 times the length of the shortest side.

In this geometry, that means the length of the escalator is 2 times its height, so is ...

x = 2(25 ft)

x = 50 ft . . . . . distance a person travels

7 0

3 years ago

**URGENT** PLEASE HELP WILL GIVE BRAINLIEST

Gnoma [55]

Answer:

they are both 0 since they would not appear on a graph

Step-by-step explanation:

6 0

3 years ago

(x + 1)2 = 25<br> Answer ?!

Ilia_Sergeevich [38]

Answer:

x = 12

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Which equation is a point slope form equation for line AB ?

kolezko [41]

I think the answer is A

5 0

3 years ago

Read 2 more answers