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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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Whats the surface area?
nadya68 [22]

Answer:

Total Area = 1070 m^2

Step-by-step explanation:

we have 4 different surfaces

  1. the "ramp"
  2. the triangles (2) one for each side
  3. the bottom rectangle
  4. the back rectangle

1. the ramp

A_r = 15\times 30\\\\A_r = 450

2. the triangles

since they are the same we just multiply by two

A_t = \frac{8\times 10}{2}\\\\A_t = \frac{80}{2}\\\\A_t = 40

so the areas of the two triangles is

2A_t = 2(40)\\\\2A_t = 80

3. the bottom rectangle

A_{bot} = 10\times 30\\\\A_{bot} = 300

4. the back rectangle

A_{back}  = 8\times 30\\\\A_{back} = 240

now add them together

A_T=A_r+2A_t+A_{bot}+A_{back}\\\\A_T = 450+80+300+240\\\\A_T = 1070\: m^2

5 0
3 years ago
Three friends each have some ribbon. Carol has 42 inches of ribbon, Tino has 2.5 feet of ribbon, and Baxter has 1.5 yards of rib
strojnjashka [21]

Answer: Baxter

Step-by-step explanation:

To solve this question, we need to know that:

12 inches = 1 foot

36 inches = 1 yard

The number of ribbon for each person will be:

Carol = 42 ribbons

Tino = 2.5 feet = 2.5 × 12 = 30 ribbons

Baxter = 1.5 yard = 1.5 × 36 = 54 ribbons

Therefore, Baxter has the most ribbon

7 0
3 years ago
Need an answer for both plez.
Ilya [14]

Answer:

(2, 13)

Step-by-step explanation:

Since they both equal y, you can equal them to each other.

8x - 3 = 2x + 9

Subtract 2x from both sides.

6x - 3 = 9

Add 3 to both sides.

6x = 12

Now divide 6 on both sides.

x = 2

Now that we have found x, we need to find y. Just plug in x to the equations.

y = 2(2) + 9

y = 4 + 9

y = 13

Now, if the next equal has the same y, then both are true.

8(2) -3 = y

16-3=y

13 = y

So therefor, both x and y are true.

3 0
3 years ago
How do I factor 1/4d-3/4
kvasek [131]
1/4d - 3/4 =
1/4(d - 3)
4 0
3 years ago
Jordan went shopping last weekend and bought a pair of shoes. The shoes were originally priced at $124.00, but are now on sale f
12345 [234]

Answer: 7

Step-by-step explanation:

7 0
3 years ago
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