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Marina86 [1]
3 years ago
15

The inequality 94 – 3 log2x ≤ 88 describes noise exposure level (in decibels) in terms of the number of hours, x, it takes to re

ach 100% of a person’s recommended daily noise dose. A manufacturer claims that the noise exposure level in their factory never exceeds 88 decibels. What is the smallest number of hours it would take for a worker in this factory to reach 100% of her daily noise exposure?
1
2
3
4
Mathematics
2 answers:
RideAnS [48]3 years ago
7 0

Answer:

The answer is D. 4

Step-by-step explanation:

plz mark brainliest

Damm [24]3 years ago
4 0

Answer:

4

Step-by-step explanation:

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Amanda's method is linear because the number of minutes increased by an equal number every week.

7 0
2 years ago
Which ordered pair is a solution of the equation?<br> y=4x−7
vampirchik [111]

Answer:

Unknown

Step-by-step explanation:

Hi! so you didn't add the ordered pair options but I will do my best :) so if you see the ordered pair (0.7) that could definitely be a solution because using the slope intercept form equation you gave I know that's our y Intercept. the slope is 4/1 so moving up 4 and to the right 1 or down 4 and to the left 1 on a graph could show you more points! If you don't want to draw it you could use Desmos and just put this equation in or give me the ordered pairs and I will give you your answer!

hope this helps :)

8 0
2 years ago
A survey was conducted to determine the amount of time, on average, during a given week SCAD students spend outside of class on
fiasKO [112]

Answer:

Standard Deviation = 5.928

Step-by-step explanation:

a) Data:

Days  Hours spent  (Mean - Hour)²

1              5                61.356

2             7                34.024

3            11                  3.360

4           14                   1.362

5           18               26.698

6          22               84.034

6 days 77 hours,    210.834

mean

77/6 = 12.833    and 210.83/6 =  35.139

Therefore, the square root of 35.139 = 5.928

b) The standard deviation of 5.928 shows how the hours students spend outside of class on class work varies from the mean of the total hours they spend outside of class on class work.

5 0
3 years ago
Find the y-intercept of the following equation. Simplify your answer. 8x - 3y = -3​
Zigmanuir [339]
The y-intercept is (0,1)
8 0
3 years ago
Tom determines that the system of equations below has two solutions, one of which is located at the vertex of the parabola. Equa
slega [8]

Answer:

b=7

Step-by-step explanation:

7 0
3 years ago
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