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timofeeve [1]
3 years ago
10

The intensity, or loudness, of a sound can be measured in decibels (dB), according to the equation (ob) – 101001 6.)

Mathematics
1 answer:
notsponge [240]3 years ago
4 0

Answer:

80

Step-by-step explanation:

i had a test with the same question, i promise its right :)

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115 - 12
adell [148]

Answer:

B

Step-by-step explanation:

|15-12|/4 = 3/4

|(-21+9)/8| = |-12/8| = 12/8 = 3/2 (Simply)

3/4 - 3/2 = -3/4

So the answer is B.

7 0
3 years ago
Can you give a step by step explanation for this problem?
Rus_ich [418]

Answer:

choose the first

Step-by-step explanation:

When h=0, T is the highest (because the temperature is highest at noon)

And knowing that the temperature difference in the world cannot exceed 60 degrees in a day, only the first choice is common sense.

7 0
2 years ago
One type of lubricating oil weighs approximately 52 pounds per cubic foot, or 7 pounds per gallon. a 42-gallon barrel will hold
irina [24]

42 gallons weigh 7(42) or 294 pounds 

<span>each cubic foot weighs 52 pounds </span>
<span>so the number of cubic feet = 294/52 = 5.654 ft^3</span>
4 0
3 years ago
Read 2 more answers
A population of a certain city decreased from 240,000 in 1985 to 210,000 in 1995 what is the percentage of decrease in the popul
Thepotemich [5.8K]

Answer:

12.5%

Step-by-step explanation:

A population of a city went from 240,000 to 210,000, what is the percentage of decrease.

First step is to calculate the amount of the decrease of the population.

It went from 240,00 to 210,000,  so it's a drop of 30,000, right?

To determine the percentage of decrease, we need to see how much that 30,000 weights compared to the original figure of 240,000:

30,000 / 240,000 = 1/8 or 12.5%

3 0
4 years ago
Read 2 more answers
x^2=6x+1 rewrite the equation by completing the square your equation should look like (x+a)^2=b or (x-c)^2=d
ryzh [129]

Answer:

(x - 3)² = 10

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Equality Properties

<u>Algebra I</u>

  • Completing the Square

Step-by-step explanation:

<u>Step 1: Define</u>

x² = 6x + 1

<u>Step 2: Rewrite</u>

  1. Subtract 6x on both sides:                    x² - 6x = 1
  2. Complete the Square:                           x² - 6x + 9 = 1 + 9
  3. Factor:                                                    (x - 3)² = 10
8 0
3 years ago
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