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3 years ago

30 is 2/3 of what number

Mathematics

2 answers:

alex41 [277]3 years ago

7 0

Answer:

Step-by-step explanation:

let the number be x.

then,

2/3 of x = 30

=> 2/3x = 30

=> x = 30 × 3/2

=> x = 45

so, the required number is 45 .

hope it helps...!!!

r-ruslan [8.4K]3 years ago

6 0

Answer:45

Step-by-step explanation:

Key Word:of

30*2/3 = 45

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11(11b + 2) what is the answer?

lisabon 2012 [21]

Answer:

121b+22

Step-by-step explanation:

Ok so first you distribute the 11 because its outside the ( ).

(11*11b) + (11*2)

121b+22

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3 years ago

How do you expand (4x+2)2

kifflom [539]

Answer:

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Step-by-step explanation:

=2(4x+2)

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3 years ago

PLZZ HELP!!!!!!

UNO [17]

Answer:

The answer is $x = - 30$ , by using the Subtraction Property of Equality.

Step-by-step explanation:

Solve for $x$ :

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3 years ago

A balloon is blowing up at a constant rate of 9 cubic centimeters per second. When the volume of the balloon is 2048/3 pi cubic

jekas [21]

Answer:

$\displaystyle \frac{dr}{dt}\approx 0,0112\ cm/sec$

Step-by-step explanation:

Rates of Change as Derivatives

If some variable V is a function of another variable r, we can compute the rate of change of one with respect to the other as the first derivative of V, or

$\displaystyle V'=\frac{dV}{dr}$

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$\displaystyle V=\frac{4}{3}\pi r^3$

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$\displaystyle \frac{dV}{dt}=9$

We need to compute the rate of change of the radius. Note that both the volume and the radius are functions of time, so we need to use the chain rule. Differentiating the volume with respect to t, we get

$\displaystyle \frac{dV}{dt}=\displaystyle \frac{dV}{dr}\displaystyle \frac{dr}{dt}$