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3 years ago

Estimate the circumference of the circle to the nearest hundredth. Use π = 3.14

1 answer:

6 0

The formula for the circumference of a circle is 2πr. r stands for the radius ehich is 1/2 of the diameter (the length from one edge of the circle to another on the inside of the circle). If you are estimating then you will want to change π to three and put that in for pie in the original equation.

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Ellen sells cosmetics and earns a weekly pay of $330 plus a commission of 12% on sales. How much did she earn last week if she s

Phantasy [73]

Answer:

$474

Step-by-step explanation:

Ellen's pay is:

Fixed Weekly Salary (that is $330) + 12% commission on Sales

We already know her fixed salary part. Let's figure out her last week's commission and add it to her fixed salary to find her total pay.

12% is 12/100 = 0.12

To find 12% of 1200, we multiply 1200 with 0.12. We get:

$1200*0.12=144$

So her commissions for last week is $144.

Total Pay Last Week = 330 + 144 = $474

3 0

3 years ago

carlos drank 24ml of water during football practice in 6 hour. how many liters did he drink per hours on average ?

dlinn [17]

Answer: 4

Step-by-step explanation:

24 ml / 6 hours = 4 ml / 1 hour

3 0

3 years ago

What is the area of the following circle? D = 2

Vladimir79 [104]

Answer:

$\pi \: {r}^{2} = \pi \: { \frac{d}{4} }^{2}$

Plug the formula in to your calculator

8 0

3 years ago

Read 2 more answers

Find the volume of the solid formed by revolving the region bounded by the graphs of y = x^3, x = 2, and y = 1 about the y-axis.

andrezito [222]

Since the rotation is about the y-axis, I'll integrate by dy.

$\displaystyle y=x^3\\x=\sqrt[3]y\\\\V=\pi \int \limits_1^8(2^2-(\sqrt[3]y)^2)\, dy\\V=\pi \Big[4x-\dfrac{3}{5}x^{\tfrac{5}{3}}\Big]_1^8\\V=\pi \left(4\cdot8-\dfrac{3}{5}\cdot8^{\tfrac{5}{3}\right-\left(4\cdot1-\dfrac{3}{5}\cdot1^{\tfrac{5}{3}\right)\right)\\V=\pi \left(32-\dfrac{96}{5}-\left(4-\dfrac{3}{5}\right)\right)\\V=\pi \left(\dfrac{64}{5}-\dfrac{17}{5}\right)\\V=\dfrac{47\pi}{5}$

3 0

3 years ago

Dan recently bought a new mountain bike for $550. His friend works

Wittaler [7]

$990
550 x .80 = 440
$550 + $440 = $990

8 0

4 years ago