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Maksim231197 [3]
3 years ago
10

Ann started reading at 4:00 and finished at 4:20 p.M. Through what fraction of a circle did the minute hand turn?

Mathematics
1 answer:
nikitadnepr [17]3 years ago
6 0

Answer:

1/3

Step-by-step explanation:

Turned 20 minutes, so the minute hand turned 20 times per hour

There are 60 minutes in 1 hour, so the minute hand turns 60 times per hour

Therefore, the fraction is 20/60, simplified to 1/3

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What us the length of the altitude of the equilateral triangle below
ladessa [460]

Answer:

Height ( h) = 12 units.

Step-by-step explanation:

Given  : An equilateral triangle with side = 8 √3.

To find : What us the length of the altitude of the equilateral triangle .

Solution : We have given equilateral triangle with side = 8 √3.

By taking the half triangle,

By the Pythagorean theorem :

(Hypotenuse)² = ( adjacent)² + (opposite)².

Plug the values Hypotenuse = 8√3 , adjacent = 4√3 , opposite = h.

(8√3)² = ( 4√3)² + (h)².

192 = 48 +  (h)².

On subtracting by 48 both sides.

192 -48 =  (h)².

144 =  (h)².

On taking square root .

h = 12 .

Therefore, Height ( h) = 12 units.

4 0
3 years ago
A simple random sample is free from any systematic tendency to differ from the population from which it was drawn.
Ket [755]

Answer:

Pretty sure that it is False

Step-by-step explanation:

Sampling variation, random samples dont really reflect the population from where i is drawn, but it is close.

4 0
3 years ago
Unit rate for 150 students in 3 classes.
damaskus [11]

Answer:

Step-by-step explanation:

150 students/3 classes= 50 students per class

7 0
2 years ago
Read 2 more answers
Least to greatest 6 3/10,1 3/10, 1 3/11, -7 6/14, 5 3/10
Drupady [299]

Answer:

-7 6/14, 1 3/11, 1 3/10, 5 3/10, 6 3/10

3 0
3 years ago
If a seed is planted, it has a 80% chance of growing into a healthy plant.
AlladinOne [14]

Answer:

0.336

Step-by-step explanation:

Use binomial probability:

P = nCr p^r q^(n-r)

where n is the number of trials,

r is the number of successes,

p is the probability of success,

and q is the probability of failure (1-p).

Here, n = 8, r = 7, p = 0.8, and q = 0.2.

P = ₈C₇ (0.8)⁷ (0.2)⁸⁻⁷

P = 0.336

3 0
3 years ago
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