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3 years ago

If a coin is tossed 5 times, what is the probability that it will land heads each time

Mathematics

2 answers:

Sever21 [200]3 years ago

4 0

1/2 because there are only two sides heads and tails. applies to each time you toss the coin

kkurt [141]3 years ago

4 0

each flip has a 1/2 probability

for 5 in a row it would be 1/2 x 1/2 x 1/2 x 1/2 x 1/2 = 1/32

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Need help on quiz plz

malfutka [58]

Answer:

x = 34 degrees

Step-by-step explanation:

Each solid line and triangle add up to 180, so start from the left and slowly do your math.

180 - 112 = 68

180 - 68 - 43 = 69

180 - 69 = 111

180 - 111 - 35 = 34

x and the last angle are the same.

8 0

3 years ago

At 3pm, the length of the shadow of a thin vertical pole standing on level ground is the same as the height of the pole. A while

aliya0001 [1]

Answer: The height of the pole is 175.97 ( approx )

Step-by-step explanation:

Let the height of the pole is x cm,

Also, let the angle of elevation of the sun to the pole at 3 pm is $\theta$

Thus, by the question,

$tan\theta = \frac{\text{ The height of the pole}}{\text{ The height of the shadow}}$

$\implies tan\theta = \frac{x}{x}$ ( at 3pm the height of shadow = height of the pole)

$\implies tan\theta = 1$

$\implies \theta = 45^{\circ}$

Again, according to the question,

When the angle of elevation is $(\theta - 12^{\circ})$ ,

The height of shadow = x + 95,

$\implies tan(45-12)^{\circ}=\frac{x}{x+95}$

$\implies tan 33^{\circ}=\frac{x}{x+95}$

$\implies tan 33^{\circ}x + 95\times tan33^{\circ}=x$

$\implies tan 33^{\circ}x - x = - 95\times tan33^{\circ}$

$\implies -0.3505924068 x = - 61.6937213538$

$x=175.969930202\approx 175.97\text{ cm}$

4 0

3 years ago

The regular price of an item at a store is p dollars. The item is on sale for 20% off the regular price. Some of the expressions

Volgvan

Answer:

Step-by-step explanation:

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3 years ago

Joseph gives a math test to all the students in a middle school and notices that taller students have higher scores. He conclude

MariettaO [177]

Answer:

D) justified, assuming that the test was given fairly

7 0

3 years ago

-5(3e - 2) < - 2(6e + 7)

krok68 [10]

This is false, -5(3e-2) is not less than -2(6e+7)

8 0

2 years ago

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