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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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If x is a positive integer then the solution set of 4x+2<14 is
taurus [48]
4x + 2 < 14
4x < 14 - 2
4x < 12
x < 12/4
x < 3 S = { x <3 }
3 0
3 years ago
If the area of the blue square is 144 units2 and the area of the pink square is 1225 units2, then the length of the hypotenuse i
navik [9.2K]

Answer: 37 units

Step-by-step explanation:

Blue=144units^2 This also works as the height of the triangle.

Pink=1225units^2 This also works as the base of the triangle.

Let's call pink ''a'', and blue ''b''. The side we're looking for ''c'' is the hypothenuse.

To find the values of a and b, use the area formula of a square and solve for a side. In this case, since we're going to need the squared values, this step can be omitted.

Formula: A=s^2

s=\sqrt[]{A}

Let's work with Blue.

s=\sqrt[]{144units^2} \\s=12units

Now Pink.

s=\sqrt[]{1225units^2}\\s=35units

So we have a triangle with a base of 35 units and a height of 12 units.

Now let's use the pythagoream's theorem to solve.

c^2=a^2+b^2\\c=\sqrt[]{a^2+b^2} \\c=\sqrt[]{(12units)^2+(35units)^2}\\c=\sqrt[]{144units^2+1225units^2}\\ c=\sqrt[]{1369units^2}\\ c=37units

7 0
3 years ago
Solve the equation<br> 3x + 5 = 2x - 3<br><br> x=8<br> X = 10<br> X= -8<br> X= -2
Rom4ik [11]
X=-8 is the answer so it would be C
8 0
3 years ago
Read 2 more answers
The following are the number of birth per year per 1,000 population for 20 countries: 34, 24, 10, 15, 22, 15, 17, 22, 10, 17, 25
Anna35 [415]

Answer:

A. D = None of the above

B. B = 18

C. A = 15

D. D = None of the above

Step-by-step explanation:

Rearranging the population from the highest to the lowest.

10, 10, 12, 15, 15, 15, 15, 17, 17, 18, 18, 20, 22, 22, 24, 25, 31, 32, 34, 37

Mean = (summation of all the 20 samples)/ no of samples

Mean per year per 1000 population = 409/20

= 20.45

Median = the middle value (for odd numbered samples)

= the sum of the middle value ÷ 2 ( for even numbered samples)

Median birth per year per 1000 population = (18 + 18)/2

= 18

Mode = the sample that has the number of frequency

Mode per year per 1000 population = 15 (frequency = 4)

Range = highest value sample - lowest value sample

Range per year per 1000 population = 37 - 10

= 27

6 0
3 years ago
Find the median, mean, and range.
11Alexandr11 [23.1K]
Mean:
21.14

Median:
12

Range:
3

7 0
4 years ago
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