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2 years ago

Find radius of a circle whose arclength is 57.1 meters and central angle of 1.46 radians

1 answer:

max2010maxim [7]2 years ago

3 0

Hint: $\bf s=r\theta\implies \cfrac{s}{\theta}=r\qquad 
\begin{cases}
s=\textit{arc's length}\\
\theta=\textit{central angle, in radians}\\
r=radius
\end{cases}$

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Fifteen times the square of a non-zero number is equal to 12 times the number. whats the number?

Fofino [41]

15x^2 = 12x
divide each side by x
15x = 12
now divide each side by 15
x = 12/15 or 4/5 which is also 0.8

4 0

2 years ago

PLEASE I NEED HELP

klemol [59]

Answer: 0.25 feet

Step-by-step explanation:

Given: Jonathon has paper strips that are all equal in length.

Let x be the length of each paper strip.

Since John lines them up end to end, the length of the line of paper strips= 3 feet

Also total strips used= 12

Therefore, length of line of strips= $12x=3\ feet$

$\\\Rightarrow\ x=\frac{1}{4}\ feet\\\Rightarrow\ x= 0.25\ feet$

hence, if Jonathan is correct then the length of each strip will be 0.25 feet.

8 0

2 years ago

Three-fourths of the people at a concert are children. If there are 87 children, what is the total number of people at the conce

babymother [125]

Hello!

Let's write this as an equation below.

3/4x=87

To find our answer ,we just divide both sides of the equation by 3/4.

x=116

Therefore, 116 people attended the concert.

I hope this helps!

8 0

2 years ago

Read 2 more answers

The waiting time at an elevator is uniformly distributed between 30 and 200 seconds. What is the probability a rider must wait b

serg [7]

Answer:

17.65% probability a rider must wait between 1 minute and 1.5 minutes

Step-by-step explanation:

An uniform probability is a case of probability in which each outcome is equally as likely.

For this situation, we have a lower limit of the distribution that we call a and an upper limit that we call b.

The probability that we find a value X lower than x is between c and d is given by the following formula

$P(c \leq X \leq d) = \frac{d - c}{b - a}$

For this problem, we have that:

$a = 30, b = 200, c = 1*60 = 60, d = 1.5*60 = 90$

$P(60 \leq X \leq 90) = \frac{90 - 60}{200 - 30} = 0.1765$

17.65% probability a rider must wait between 1 minute and 1.5 minutes

7 0

2 years ago

Find the missing angle. solve for ?<br>PLZ HELP =<

m_a_m_a [10]

Answer:

70 degrees

Step-by-step explanation:

180-120=60

180-(60+50)=70

3 0

2 years ago