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3 years ago

Kinda is buying boxes of ice cream sandwiches for her class party. She has to decide how many boxes she should purchase

Mathematics

1 answer:

kupik [55]3 years ago

6 0

Please be specific, how many people are in her class?

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I need a quick answer. I will appreciate your efforts

drek231 [11]

Answer:

10.5 cm

Step-by-step explanation:

12÷9= 1.3 (1dp)

14÷(12÷9)= 10.5cm

7 0

3 years ago

Read 2 more answers

Simplify -r+8(-5r-2)

Lapatulllka [165]

Answer:

-41r - 16

Step-by-step explanation:

Step 1 :

Step 2 :

Pulling out like terms :

2.1 Pull out like factors :

-5r - 2 = -1 • (5r + 2)

Equation at the end of step 2 :

-r + -8 • (5r + 2)

Step 3 :

Step 4 :

Pulling out like terms :

4.1 Pull out like factors :

-41r - 16 = -1 • (41r + 16)

6 0

3 years ago

18 is 0.75% of what number?

LUCKY_DIMON [66]

0.135 is your answer pretty sure.

4 0

3 years ago

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

a recipe called for the ratio of sugar to flour to be 5 to 1 if you use 35 ounces of sugar how many ounces of flour do you need

den301095 [7]

7

The answer is 7
The ratio would look like 35/7

4 0

3 years ago