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4 years ago

Which expression has a value of 18?

Mathematics

1 answer:

Anarel [89]4 years ago

5 0

I can't see the expressions

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A bag contains 18 balls to green five black eight blue one brown one red and one white if 17 balls of a move from the bag at ran

dimaraw [331]

Answer:

$P(Brown) = 0.0556$ or $P(Brown) = \frac{1}{18}$

Step-by-step explanation:

Given

$Total = 18$

$Green = 2$

$Black = 5$

$Blue = 8$

$Brown = 1$

$Red = 1$

$White = 1$

Required

Determine the probability of selecting a brown ball

This is calculated as thus:

$P(Brown) = \frac{Brown}{Total}$

Substitute values for Brown and Total

$P(Brown) = \frac{1}{18}$

The answer can be in fraction or solved further as;

$P(Brown) = 0.0556$

5 0

3 years ago

Line l is parallel to line m. the slope of the line l is 2/7. what is the slope of line m ?

motikmotik

The slope of line m is also 2/7 because they are parallel so they have the same slope

7 0

3 years ago

A ball is thrown straight up from the top of a 40 feet tall building with an initial speed of 24 feet per second. The height of

rjkz [21]

Answer:

1)The ball hits the ground after 3 seconds.

2)The maximum height of the ball is 49 feet

3)It takes 1.25 seconds to reach its maximum height

Step-by-step explanation:

Height of building = 40 feet

We are given that A ball is thrown straight up from the top of building with an initial speed of 24 feet per second.

So, The height of the ball as a function of time can be modeled by: $h(t)=-16t^2+40t+24$

1)After how many seconds the ball hit the ground.

Substitute h(t)=0

So, $-16t^2+40t+24=0\\-2t^2+5t+3=0\\2t^2-5t-3=0\\2t^2-6t+t-3=0\\2t(t-3)+1(t-3)=0\\(2t+1)(t-3)=0\\t=\frac{-1}{2} , 3$

Since time cannot be negative

So,the ball hits the ground after 3 seconds.

2)What is the maximum height of the ball?

It takes maximum height at vertex

Formula : $t = \frac{-b}{2a}$

$t=\frac{-40}{2(-16)}=1.25 seconds$

Substitute the value of t in function

$h(1.25)=-16(1.25)^2+40(1.25)+24\\h(1.25)=49 feet$

So,the maximum height of the ball is 49 feet

3).How long did it take for the ball to reach its maximum height?

It takes 1.25 seconds to reach its maximum height

6 0

3 years ago

What is 1/100 of 650

marishachu [46]

This is easy young one it is 6.5 because you move the decimal place 2 places to the left when dividing by 100

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3 years ago

8(4- x) = 7x + 2 x= ? DONE DONE

nirvana33 [79]

Answer:

Plz see the answer behind it.

Step-by-step explanation:

Hope it helps uh

If you get confuse you can ask me .........

5 0

3 years ago