3 years ago

Com F

Mathematics

1 answer:

Sindrei [870]3 years ago

3 0

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Find the slope of the line passing through the points (8,-6) and (1, -2).

Alik [6]

Step-by-step explanation:

The slope of the line is -4/7.

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3 years ago

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Write $3.9 out of $60 as percentage

Norma-Jean [14]

Answer:

Step-by-step explanation:

$\frac{3.9}{60}*100=\frac{13}{2}$

= 6.5%

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2 years ago

The ratio of coloured papers to wight papers is 3:8.If there are 48 wight papers, how many coloured papers are there?

mestny [16]

Answer: The total number of colored papers is 18.

Step-by-step explanation:

Given: The ratio of coloured papers to wight papers is 3:8.

Let total number of colored papers = 3x

and total number of wight papers = 8x

Since, there are 48 wight papers , then

$8x=48$

$\Rightarrow\ x=6$

Now , number of colored papers = 3(6)=18

Hence, the total number of colored papers is 18.

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3 years ago

If a wheel with a radius of 80 inches spins at a rate of 50 revolutions per minute, find the approximate linear velocity in mile

Lubov Fominskaja [6]

$\bf \textit{arc's length}\\\\
s=rw\qquad 
\begin{cases}
r=radius\\
w=\textit{angular speed}
\end{cases}\qquad w=\cfrac{50 rev}{min}\cdot \cfrac{2\pi }{rev}
\\\\\\
w=\cfrac{100\pi }{min}\qquad s=80in\cdot \cfrac{100\pi }{min}\implies s=\cfrac{8000\pi\ in}{min}\\\\
-------------------------------\\\\
\textit{now to convert it to miles/hr}
\\\\\\
\cfrac{8000\pi\ in}{min}\cdot \cfrac{ft}{12in}\cdot \cfrac{mile}{5280ft}\cdot \cfrac{60min}{hr}\implies \cfrac{8000\pi \cdot 60\ in}{12\cdot 5280\ hr}$

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3 years ago

Answer this please thanks!

Alekssandra [29.7K]

Answer:

Step-by-step explanation:

Use the pythagorean theorem

a² + b² = c²

3² + 4² = c²

9 + 16 = c²

25 = c²

5 = c

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3 years ago