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goldfiish [28.3K]
3 years ago
14

A study found that 25% of car owners in Fiji had their cars washed professionally rather than do it themselves. If 18 carowners

are randomly selected, find the probability that atmost two people have their cars washed professionally
Mathematics
1 answer:
Andrej [43]3 years ago
3 0

Answer:

In a pulley, the ideal mechanical advantage is equal to the number of rope segments pulling up on the object. The more rope segments that are helping to do the lifting work, the less force that is needed for the job.

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Brian is riding his bike. He biked a distance of 14 miles at a rate of 14 miles per hour. Rearrange the distance formula, d = rt
xeze [42]

Answer:

60 minutes

Step-by-step explanation -

14=14t

14*1=14

6 0
2 years ago
Any help would be appreciated! <br> 7/9+ 8/9 as a mixed number
katovenus [111]

Answer:

15/9 :))

is your answerrr

7 0
2 years ago
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24 is 40% of what number? please show me the steps also.
ella [17]
Answer:

1) 24 is <span>40%</span> of 60

<span><span>2) (.4)100x</span>=24</span>

<span><span>3) 25</span>x=24</span>

<span><span>4) 25</span>x⋅5=24⋅5</span>

<span>5) 2x=120</span>

<span><span><span>6) 2x/</span>2</span>=<span>120/2</span></span>

<span>7) x=<span>60</span></span>

4 0
2 years ago
Multiply out 5x (x + 3y)
GrogVix [38]

Answer:

5x²+15xy

Step-by-step explanation:

5x(x+3y)=

5x²+15xy

If you need more steps or more explanation, reply to this answer.

7 0
3 years ago
Read 2 more answers
Please help me thank you
Hoochie [10]

Answer:

\large\boxed{\sin2\theta=\dfrac{\sqrt3}{2},\ \cos2\theta=\dfrac{1}{2}}

Step-by-step explanation:

We know:

\sin2\theta=2\sin\theta\cos\theta\\\\\cos2\theta=\cos^2\theta-\sin^2\thet

We have

\sin\theta=\dfrac{1}{2}

Use \sin^2\theta+\cos^2\theta=1

\left(\dfrac{1}{2}\right)^2+\cos^2\theta=1\\\\\dfrac{1}{4}+\cos^2\theta=1\qquad\text{subtract}\ \dfrac{1}{4}\ \text{from both sides}\\\\\cos^2\theta=\dfrac{4}{4}-\dfrac{1}{4}\\\\\cos^2\theta=\dfrac{3}{4}\to\cos\theta=\pm\sqrt{\dfrac{3}{4}}\to\cos\theta=\pm\dfrac{\sqrt3}{\sqrt4}\to\cos\theta=\pm\dfrac{\sqrt3}{2}\\\\\theta\in[0^o,\ 90^o],\ \text{therefore all functions have positive values or equal 0.}\\\\\cos\theta=\dfrac{\sqrt3}{2}

\sin2\theta=2\left(\dfrac{1}{2}\right)\left(\dfrac{\sqrt3}{2}\right)=\dfrac{\sqrt3}{2}\\\\\cos2\theta=\left(\dfrac{\sqrt3}{2}\right)^2-\left(\dfrac{1}{2}\right)^2=\dfrac{3}{4}-\dfrac{1}{4}=\dfrac{3-1}{4}=\dfrac{2}{4}=\dfrac{1}{2}

3 0
2 years ago
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