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2 years ago

12

What is equivalent to (73)–2

2 answers:

mario62 [17]2 years ago

7 0

Answer:

71

Step-by-step explanation:

(73)-2 is equivalent to 71

vaieri [72.5K]2 years ago

4 0

Answer:

71

Step-by-step explanation:

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Can a common denominator of mixed numbers be 20?

gladu [14]

Yes, a common denominator is just the smallest multiple of all numbers in a group.

So the common denominator of 4, 8 and 12 would be 4, because 4 goes into all those numbers.

3 0

3 years ago

Read 2 more answers

Please help im lost.

8_murik_8 [283]

Answer:

$2$

Step-by-step explanation:

$h(t) = - 16 {t}^{2} + 64 \\ \Leftrightarrow 0 = - 16 {t}^{2} + 64 \\ \Leftrightarrow {t}^{2} = 4\Leftrightarrow t = \pm2\Leftrightarrow t = 2 \: (t \geqslant 0)$

8 0

3 years ago

Helium is pumped into a spherical balloon at a rate of 3 cubic feet per second. How fast is the radius increasing after 2 minute

Arisa [49]

Answer:

The rate of change of radius is 0.0530 ft/sec.

Step-by-step explanation:

Given : Helium is pumped into a spherical balloon at a rate of 3 cubic feet per second.

To find : How fast is the radius increasing after 2 minutes?

Solution :

The volume of the sphere is $V=\frac{4}{3}\pi r^3$

Differentiating w.r.t. r,

$\frac{dV}{dr}=4\pi r^2$

We have given, Helium is pumped into a spherical balloon at a rate of 3 cubic feet per second.

i.e. $\frac{dV}{dt}=3$

Integrate w.r.t. t,

$V=3t+C$

Assuming V=0 when t=0 then C=0

So, $\frac{4}{3}\pi r^3=3t$

$r^3=\frac{t}{4\pi}$

$r=\sqrt[3]{\frac{t}{4\pi}}$

Now, we apply chain rule

i.e. $\frac{dV}{dt}=\frac{dV}{dr}\cdot \frac{dr}{dt}$

$3=4\pi(\frac{t}{4\pi})^{\frac{2}{3}}\cdot \frac{dr}{dt}$

The radius increasing after 2 minutes i.e. at $t=2\times 60=120$

$3=4\pi(\frac{120}{4\pi})^{\frac{2}{3}})\cdot \frac{dr}{dt}$

$3=56.56\cdot \frac{dr}{dt}$

$\frac{dr}{dt}=\frac{3}{56.56}$

$\frac{dr}{dt}=0.0530$

Therefore, the rate of change of radius is 0.0530 ft/sec.

8 0

3 years ago

The lengths of the sides of a triangle are y, y+2, and 8 centimeters. If the perimeter is 34 centimeters, what is the value of y

Aleks04 [339]

Answer: 12

Step-by-step explanation:

OKAYOKAY so what I did was 34 - 8 = 26

then 26 - 2= 24

THEN I divided 24 in to 2 equal parts and got 12 so that means y = 12

Hope that helps!!! :}

7 0

2 years ago

Can someone help me please thank you

Ymorist [56]

Answer:

b

Step-by-step explanation:

8:5

times 3

24:15

6 0

3 years ago

Read 2 more answers