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jarptica [38.1K]
3 years ago
9

What is the difference? -2/15 -(-9/15) a.-11/15 b. -7/15 c. 7/15 d. 11/15

Mathematics
1 answer:
Elodia [21]3 years ago
5 0
-2/15-(-9/15)=-2/15+9/15=9/15-2/15=7/15
the answer is C

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Find the volume of the following. Please round your answer to the nearest tenth. Please do not put units. Hint: You need to use
Sophie [7]

Answer:

<em>V = 1,568</em>

Step-by-step explanation:

<u>The Volume of a Square Pyramid</u>

Given a square-based pyramid of base side a and height h, the volume can be calculated with the formula:

\displaystyle V=\frac{1}{3}a^2h

We are given a square pyramid with a base side a=14 ft but we're missing the height. It can be calculated by using the right triangle shown in the image attached below, whose hypotenuse is 25 ft and one leg is 7 ft

We use Pythagora's theorem:

25^2=h^2+7^2

Solving for h:

h^2=25^2-7^2=625-49=576

h=\sqrt{576}=24

The height is h=24 ft. Now the volume is calculated:

\displaystyle V=\frac{1}{3}*14^2*24

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3 0
3 years ago
The height of a candle, in centimeters, can be modeled by the linear equation h = 28 - 2t, where t represents the hours that the
Ostrovityanka [42]

The slope is -2. In context to this problem, the candle will burn away 2cm of its length every hour.

5 0
3 years ago
There are 24 hours in a day, At 7 a.m. how many hours are left in the day?
mariarad [96]

Answer:

17

Step-by-step explanation:

4 0
3 years ago
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The equation y = 1.55x + 110,419 approximates the total cost, in dollars, of raising a child in the United States from birth to
Mariana [72]

Answer:

The answer to your question is The cost to raise a child from birth to 17 years in a household is $194119.

Step-by-step explanation:

Equation

                      y = 1.55x + 110,419

Annual income = $54,000

To solve this problem just substitute the annual income and simplify to find the cost.

                    y = 1.55(54,000) + 110419

Simplify

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Result

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3 0
3 years ago
What is .61 repeating as a fraction and how did you get the answer
vivado [14]
61/100, because if it is 0.(value) than it is value / 100 assuming value is 2 digits long. We cannot simplify it further because 61 is prime number.
7 0
3 years ago
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