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Iteru [2.4K]
2 years ago
12

A five-question multiple-choice quiz has five choices for each answer. Use the random number table provided, with O's representi

ng Incorrect answers
and 1's representing correct answers, to answer the following question:
What is the probability of correctly guessing at random exactly one correct answer? Round to the nearest whole number.

Mathematics
1 answer:
mina [271]2 years ago
8 0

Answer:

It is 4

Step-by-step explanation:

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The school band is having a car wash to raise money. There goal is to collect $150. So far they have earned $10 each from three
Lady bird [3.3K]
They’ve already earned $105 so they need $45 more to reach their goal
4 0
3 years ago
A rocket is launched from a tower what time will the rocket reach its max
Lena [83]

Answer:

Step-by-step explanation:

A science class designed a ball launcher and tested it by shooting a tennis ball up and off the top of a 15-story building. They determined that the motion of the ball could be described by the function: h(t) = -16t2 + 144t + 160, where ‘t’ represents the time the ball is in the air in seconds and h(t) represents the height, in feet, of the ball above the ground at time t.

a) Graph the function h(t) = -16t2 + 144t + 160 (see below)

      b) What is the height of the building?

The height of the building is also the height of the tennis ball before it is launched into the air. This occurs when t=0 so substitute 0 for t and you get:

H(0) = -16(0)2 + 144(0) + 160

The height of the building is 160 feet.

 c) At what time did the ball hit the ground?

The ball hits the ground when the height is 0. Therefore, we are looking for a solution to: -16t2 + 144t + 160 = 0

Use the quadratic formula or put this into a calculator. The solution is t=10 and -1, but only 10 makes sense. Therefore, the ball hits the ground at 10 seconds.

  d) At what time did the ball reach its maximum height?

You can put this into the calculator or you can realize that the maximum height is also

− the vertex. The x-value (‘t’ in this case) is 2

−144

which is (2)(−16) = 4.5.

Therefore, the ball reached its maximum height at 4.5 seconds.

   e) What is the maximum height of the ball?

We calculated the time of the maximum height (4.5 seconds). Therefore, substitute 4.5 into the function to find the maximum height.

-16(4.5)2 + 144(4.5) + 160

The maximum height is 484 feet.

5 0
2 years ago
I need help plz i dont get it and im trying to get my grade up
Ymorist [56]

Answer:

648

Step-by-step explanation:

(25 - 9 + 2)^2 / 3x6

= 108 x 6

= 608

follow BODMAS and you'll get it

If you would like to venture further, you can check out my Instagram page (learntionary) where I post notes and mathematics tips. Thanks!

4 0
3 years ago
Read 2 more answers
Angle ABC is congruent to which angle?
Llana [10]

Answer:

CBA=MNP

Step-by-step explanation:

Side NP=CB

Side NM=AB

then the angles between those sides are equal

6 0
2 years ago
List the next three numbers for the sequence: 25, 75, 300, 1500, ...
ELEN [110]

Answer: 2000

Step-by-step explanation:

4 0
3 years ago
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