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adoni [48]
3 years ago
11

Simplify each product. Write in standard form. Explain

Mathematics
1 answer:
max2010maxim [7]3 years ago
5 0
Use distributive property:
16. 5k(3 - 4k)
15k - 20k^2
18. 6g^2(g - 8)
6g^3 - 48g^2
20. -2n^2 (5n - 9 + 4n^2)
-10n^3 + 18n^2 - 8n^4
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The diameter of each wheel of a bicycle is 27 inches. If you are traveling at a speed of 20 miles per hour on this bicycle, thro
klasskru [66]
Notice, you've got a diameter in inches
and a linear velocity in miles
thus, you'd need to convert first

\bf v=rw\implies \cfrac{v}{r}=w\qquad 
\begin{cases}
v=\textit{linear speed}\\
r=radius\\
w=\textit{angular speed}\\
 --------------\\
v=20\frac{mi}{h}\\
r=\frac{diameter}{2}=\frac{27}{2}
\end{cases}
\\\\
\textit{now, converting 20miles to inches}
\\\\
\cfrac{20mi}{h}\cdot \cfrac{5280ft}{mi}\cdot \cfrac{12in}{ft}\implies \cfrac{20\cdot 5280\cdot 12\ in}{h}\impliedby v
\\\\\\
\cfrac{1267200\frac{in}{h}}{\frac{27}{2}in}=w

now, whatever that is, you'll need to divide it by a revolution, recall, a revolution is 2\pi
thus \bf \cfrac{\qquad \boxed{\cfrac{1267200\frac{in}{h}}{\frac{27}{2}in}}\qquad }{2\pi }=revolutions
7 0
3 years ago
Read 2 more answers
Which of the following method for making a proof does not involve the negation of a statement
s2008m [1.1K]

We don't know what the answer choices are!!


8 0
3 years ago
Can u help me here I have more the next one is part 2 for this question
Harlamova29_29 [7]

The circumference of the vase is 18.84 inches.

<u>Step-by-step explanation:</u>

The circumference of the cylinder is same as the circumference of its base.

Moreover, the base of the cylinder is actually a circle.

So we need to find the circumference of the circle to find the circumference of the cylinder.

From the given figure, we know that the diameter of the base d= 6 inches.

∴The formula for the circumference of the circle = 2πr or dπ.

⇒ circumference = 6×3.14.

                             = 18.84.

So the circumference of the circle is 18.84 inches.

∴The circumference of the cylindrical vase is also 18.84 inches.

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3 years ago
PLEASE HELP!!! ITS ALMOST DUE!!! ILL MARK BRAINLIEST!!
HACTEHA [7]

Answer:

13.7

Step-by-step explanation:

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3 years ago
Joseph has 2 2/3 bags of popcorn, Sally has 1 3/4 bags of popcorn. How much do they have together?
Aliun [14]

Answer:

4 5/12 or four and five twelfths or 4 and 5 over 12

Step-by-step explanation:

7 0
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