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2 years ago

7

The dance committee consisted of 8 students. The committee will select three officers at random. What is the probability that Ma

jed, Fahd, and Faleh are selected?

1 answer:

Sophie [7]2 years ago

3 0

3/24
I’m guessing cause you times 3 by 8 to get 24 which is the amount of possibilities

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Which expression is equivalent to 64 − 9x2?

barxatty [35]

Answer:

it is just 64-18=48

Step-by-step explanation:

you have to just keep 64 the same and do the 9*2. And sum those outcomes.

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2 years ago

The sides of a triangle are (x+5), and (x+8) units. Find the value of x if the perimeter of the triangle is 106 units.

lutik1710 [3]

106=x+x+5+x+8

106=3x+13

3x=93

x=31

(the sides are 31, 36, 39 respectively)

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2 years ago

The set of all points that are equidistant from two points

AfilCa [17]

That will be a line passing through the center and perpendicular to, a line joining the 2 points.

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3 years ago

Write the equation of the parabola in vertex form.

stellarik [79]

well, looking at the picture of this vertically opening parabola, it has a vertex at 0,0 and it passes through 2,1 hmm ok

$~~~~~~\textit{vertical parabola vertex form} \\\\ y=a(x- h)^2+ k\qquad \begin{cases} \stackrel{vertex}{(h,k)}\\\\ \stackrel{"a"~is~negative}{op ens~\cap}\qquad \stackrel{"a"~is~positive}{op ens~\cup} \end{cases} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ y = a(x-0)^2+0\qquad \stackrel{\textit{we also know that}}{x=2\qquad y = 1}\qquad \implies 1=a(2-0)^2+0 \\\\\\ 1=4a\implies \cfrac{1}{4}=a~\hspace{10em} \boxed{y=\cfrac{1}{4}x^2}$

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2 years ago

A team played 20 games and won 18. what % did they win?

maxonik [38]

<u>Answer:</u> 90%

<u>Reasoning:</u> To solve this divide 18 by 20

18/20= 0.9

Now multiply 20 by 0.9 to check

20 x 0.9= 18

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2 years ago