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2 years ago

Find the volume of the pyramid.

Mathematics

1 answer:

Fittoniya [83]2 years ago

6 0

The answer should be 36 cubic inches.

( sorry if it’s wrong )

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7. In a state lottery, a player must choose 8 of the numbers from 1 to 40. The lottery commission then performs an experiment th

Vlad1618 [11]

Answer:a) P(8 of the players numbers are drawn)=1.3×10^-8

b) P(7 of the players number are drrawn)=3.33×10^-c) P(at least 6 of the players number were drawn)=1.84×10^-4

Step-by-step explanation:

Players has 8 combinations of numbers from 1-40. The outcome S contains all the combinations of 8 out of 40

a) P(8 of the players numbers are drawn)= 1/40/8= 1.3×10^-8

There are one in hundred million chances that the draw numbers are precisely the chosen ones.

b) Number of ways of drawing 78 selected numbers from 1-40=8×(40-7)

8×32

P(7 of the players number are drawn)=8×32/40 =3.33×10^-6.

There are approximately 300,000 chances that 7 of the players numbers are chosen

c) P(at least 6 players numbers are drawn)= 32/2×(8/6) ways to draw.

P(at least 6 players numbers are drawn)=P(all 8 chosen are drawn)+P(7 players numbers drawn)+P(6 chosen are drawn) = 1+ 8 x32/40/8 +[8\6 ×32/2]

P(at least 6 players numbers are drawn) = 1.84×10^-4.

There are approximately 5400chances that at least6 of the numbers drawn are chosen by the player.

5 0

2 years ago

When there is a wedge between private costs and social costs, which of the following must be present?

Bogdan [553]

The negative externalities must be present.

4 0

2 years ago

What is the equation of a line in slope intercept form that passes through the points (-4,3) and (-2,4)

Aleks [24]

Answer:

y=1/2x+5

Step-by-step explanation:

y-y/x-x for slope

4-3/-2-(-4) 1/2

7 0

2 years ago

Read 2 more answers

Help find the perimeter! Please help! (30 points)

lord [1]

The perimeter is 16, according to my calculations.

5 0

2 years ago

Read 2 more answers

The paint in a certain container is sufficient to paint an area equal to 9.375 m^2. How many bricks of dimensions 22.5 cm × 10 c

Minchanka [31]

Let l = 22.5 cm, b = 10 cm and h = 7.5 cm
Surface area of each brick
= 2(lb + bh + lh)
= 2(22.5 × 10 + 10 ×7.5 + 7.5 × 22.5 cm²
= 2 (225 + 75 + 168.75) cm²
= 2(468.75) cm² = 937.5 cm²

Area that can be painted using the paint of container = 9.375 m² = 9.375 × 100 × 100 cm²

Number of bricks that can be painted
$= \frac{Total \: area \: that \: can \: be \: painted}{ Surface \: area \: of \: each \: brick }$
$= \frac{9.375 \times 100 \times 100 \: cm {}^{2} }{937.5 \: cm {}^{2} } = 100$

Hence, 100 bricks can be painted out of the paint given in the container.

8 0

2 years ago