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2 years ago

15

If 8 adult smartphone users are randomly selected, find the probability that at least 4 of them use their smartphones in meetin

gs or classes.

1 answer:

aleksklad [387]2 years ago

8 0

The answer would would 63.67%.

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If sin 21 = cos (5x+9) what is the value of x

n200080 [17]

sin x = cos 54 = sin (90-54) = sin 46

Hence x = 46 deg

Same technique. Sin 21 = cos (5x+9) = sin (90-5x-9)

81-5x = 21

Or 5x = 60

Or x = 12 deg

hope it helps

4 0

3 years ago

14.4x - 28.2 > 36.6

Musya8 [376]

Answer:

x > 4.5

Step-by-step explanation:

Given the inequality :

14.4x - 28.2 > 36.6

Collect like terms

14.4x > 36.6 + 28.2

14.4x > 64.8

Divide both sides by 14.4

x > 64.8 / 14.4

x > 4.5

4 0

2 years ago

Fred is trying to earn $35 to buy a basketball. He has saved $11.25. He earns $2.25 per hour doing yard work for his neighbor, a

rjkz [21]

$2.25y + 7.25z + 11.25 \geq 35 \\ y = 2 \\ z = 3 \\ 2.25(2) + 7.25(3) + 11.25 \geq 35 \\ 4.50 + 21.75 + 11.25 \geq 35 \\ 37.5 \geq 35$
The answer will be the third one: Yes, because the total will be $37.50.

7 0

2 years ago

Graph y = sec(4x) + 2 from 0

maksim [4K]

Hope this helps!

Answer:

5 0

2 years ago

Part A: Find the LCM of 8 and 9. Show your work. (3 points) Part B: Find the GCF of 35 and 63. Show your work. (3 points) Part C

GaryK [48]

A: 8*9= 72

B: euclidean theorem (35,63) (35,28) (7,28) (7,0) gcf= 7

C: 7(5+9)

3 0

3 years ago