Ask question

Ask question

All categories

3 years ago

12

Frank made cookies for his class. He gave away half of them in his first period class, but then his mom dropped off 12 more cook

ies. If he now has 32 cookies, how many did he start with?

1 answer:

Aliun [14]3 years ago

4 0

Answer:

Work backwards to solve this problem.

If he ends with 32 cookies, then subtract 12. That gives 20 cookies. 20*2 is 40, so now he has 40 cookies.

You might be interested in

Please answer. x-4/3 - 10 The photo is below.

wariber [46]

X-4/3=10
Multiply 3 on both sides
x-4=30
Add 4 to both sides
Final Answer: x=34

5 0

3 years ago

PLEASE HELP HELP HELP

Jet001 [13]

Answer:

<u>The answer is: 11</u>

<u>explanation: the powers get added </u>

If that is not correct it might be 30

<u><em>i hope this was helpful :)</em></u>

<u><em /></u>

6 0

3 years ago

Read 2 more answers

Can someone please help me with this!

Nady [450]

Answer:

It's Positive

Step-by-step explanation:

4 0

3 years ago

The radius of a right circular cylinder is given by √(t+6) and its height is 1/6√t , where t is time in seconds and the dimensio

denis23 [38]

Answer:

The rate change of volume of the cylinder is $\frac{\pi}{4} ( \sqrt t+\frac2{ \sqrt t})$ cubic inch per second.

Step-by-step explanation:

Given that the radius of right circular cylinder is $\sqrt{(t+6)}$ and its height is $\frac16 \sqrt t$ where t is time in second and the dimension are inches.

$\therefore r = \sqrt{(t+6)}$

The base area of the cylinder is A= $\pi r^2$

$=\pi (\sqrt{t+6})^2$

$= \pi (t+6)$

$\therefore A= \pi(t+6)$

Differentiating with respect to t

$\frac{dA}{dt}=\pi$

$\therefore h=\frac16\sqrt t$

Differentiating with respect to t

$\frac{dh}{dt}=\frac16 \times \frac12(t)^{\frac12-1}$

$\Rightarrow \frac{dh}{dt}=\frac1{12} (t)^{-\frac12}$

The volume of cylinder is V= Ah

∴V= Ah

Differentiating with respect to t

$\frac{dV}{dt}=A\frac{dh}{dt}+h\frac{dA}{dt}$

$=\pi (t+6). \frac1{12}t^{-\frac12} +\frac16\sqrt t . \pi$

$=\pi. \frac1{12}.t^{\frac12}+\pi . 6.\frac1{12} t^{-\frac12} +\pi\frac16 \sqrt t$

$=\frac{\pi}{4} ( \sqrt t+\frac2{ \sqrt t})$

The rate change of volume of the cylinder is $\frac{\pi}{4} ( \sqrt t+\frac2{ \sqrt t})$ cubic inch per second.

5 0

3 years ago

What is the answer to 532.4 × 100

Westkost [7]

When multiplying 532.4 x 100, you simply move the decimal two spaces to the right, because 100 has 2 zeros. Thus, your answer is 53,240.

8 0

4 years ago

Read 2 more answers