3 years ago

Lesson 2 Quiz Pleasee ❗️

Mathematics

2 answers:

krek1111 [17]3 years ago

7 0

Ce dracu e acolo?Eu sunt un român cu drepturi!!

FromTheMoon [43]3 years ago

5 0

Answer:

True

Step-by-step explanation:

You might be interested in

−8 = 3+t again sorry if im hurting yo brain

Oduvanchick [21]

Answer:

-11

Step-by-step explanation:

-8 = 3 + t

-8 - 3 = t

-11 = t

Hope this helps :)

6 0

3 years ago

There are 180 students in the seventh grade, and 25% are in the Environmental Club. How many students are in the Environmental C

Hunter-Best [27]

Answer:

45 students are in the Environmental Club

Step-by-step explanation:

25/100 = x/180 (cross multiply)

(180 * 25) / 100 = 45

4 0

3 years ago

Solve for y Just ignore this - hhjjjxmznfncnf f cucbc

Gnom [1K]

Answer:

Step-by-step explanation:

y/7.5=11/10

y=7.5(11)/10

y=8.25mm

3 0

3 years ago

V=4/3? r^2 Suppose that, for the sphere in the video, instead of being told how fast the radius is changing, we're told that the

grigory [225]

Answer:

$\frac{dr}{dt}=0.01$ cm per second

$\frac{dS}{dt}=320 square centimeter per secondStep-by-step explanation:We are given that volume of sphere [tex]V=\frac{4}{3}\pi r^3$

Volume of sphere is increasing at a constant rate

$\frac{dV}{dt}=4$ cubic centimeters per second

We have to find the rate of radius at which increasing

when r= 10 cm

Differentiating w.r.t time

$\frac{dV}{dt}=\frac{4}{3}\pi\cdot3r^2\frac{dr}{dt}$

$4=4 r^2\frac{dr}{dt}$

$\frac{dr}{dt}= \frac{1}{r^2}=\frac}{1}{(10)^2}=0.01$ cm per second

Now ,we are given that surface area of sphere

$S=4\pir^2$

Differentiate w.r.t time then we get

$\frac{dS}[dt}=8\pir\frac{dr}{dt}$

$\frac{dS}{dt}=8\pi\times 20\times 2$

$\frac{dS}{dt}=320$ cm per second

5 0

3 years ago

= Initial Knowledge Check Factor. 64w2+48w+9

noname [10]

Answer:

(8x+3)(8x+3) or x=-3/8

Step-by-step explanation:

7 0

3 years ago