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3 years ago

15

in a survey at a local university, 65% of students say that they get less than the recommended right hours of sleep per night. i

n a group 2100 students, how many would you expect get right or more hours of sleep per night?

1 answer:

Arlecino [84]3 years ago

7 0

.35(2100)= 735 students

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2x+9=2x-5 what is x in this situation

Alexxandr [17]

your answer would be x=4 i believe

7 0

2 years ago

Read 2 more answers

Which of the following number lines represents the compound inequality shown below?

OLEGan [10]

Answer:

I'm not really sure what the question might be asking or if I've been given all the information but this is how you would solve it as (-2,4] meaning any real number between these will give you a real x on the domain.

Step-by-step explanation:

$-4 < 3x + 2 \leqslant 14 \\ - 6 < 3x \leqslant 12 \\ - 2 < x \leqslant 4$

6 0

3 years ago

andrew-mc [135]

Answer:

The angle of depression from Platform A to Platform B is $43.1^{\circ}$

Step-by-step explanation:

Refer the attached figure

The horizontal distance between the platforms is 500 feet i.e. BC = 500

The length of the zip-line is 685 feet i.e. AB = 685

We are supposed to find the angle of depression from Platform A to Platform B

Hypotenuse = 685

Base = 500

$Cos \theta = \frac{Base}{Hypotenuse}\\Cos \theta = \frac{500}{685}\\\theta = cos^{-1}(\frac{500}{685})\\\theta = 43.11^{\circ}$

Hence the angle of depression from Platform A to Platform B is $43.1^{\circ}$

4 0

4 years ago

Solve the following inequality. 45 < 9(x + 3) < 153 A. 8 < x < 14 B. 2 < x < 20 C. 8 < x < 20 D. 2 <

kaheart [24]

Answer:

B

Step-by-step explanation:

hope this help but I worked it out so it should be true

7 0

3 years ago

Caiden and Josh are practicing at a batting cage. Josh has hit nine more than one-half the number of balls that Caiden has. If t

OverLord2011 [107]

Answer:

The Answer is: Josh hit 47 balls.

Step-by-step explanation:

Let j = Josh number of hits and c = Caiden number of hits:

j = c/2 + 9

Total:

j + c = 123.

Substitute:

(c/2 + 9) + c = 123

c/2 + c = 123 - 9

c/2 + c = 114

1/2c + 2/2c = 114

3/2c = 144

c = 144 (2/3) = 76, Number of hits for Caiden

Solve for j:

j = 76/2 + 9

j = 38 + 9 = 47, number of hits for Josh

Proof:

j + c = 123

47 + 76 = 123

123 = 123

Hope this helps! Have an Awesome Day!! :-)

6 0

3 years ago