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3 years ago

Are national numbers negative?

Mathematics

1 answer:

soldier1979 [14.2K]3 years ago

7 0

Answer:

rational numbers can be positive, negative, or zero

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I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS AND EXPLAIN WHY THAT IS THE ANSWER

Step2247 [10]

Answer:

$A = 297\pi$

Step-by-step explanation:

To solve this problem we need to be familiar with the formula for the surface area of a cone:

$A = \pi r(r + \sqrt{h^2+r^2})$

We are given the length of a side and the diameter, to calculate the radius divide the diameter in half:

$r = \frac{d}{2}\\r = \frac{18}{2}\\r = 9 cm$

To calculate the height of the cone, we must use the Pythagorean Theorem:

$C^2 = A^2 + B^2$

We can treat the side length as the hypotenuse $C$ , the radius as the base $A$ , and solve for height $B$ . Set the expression up like this:

$C^2 = A^2 + B^2\\24^2 = 9^2 + B^2\\B^2 = 24^2 - 9^2\\B = \sqrt{24^2 - 9^2}\\B = \sqrt{576 - 81}\\B = \sqrt{495}\\B \approx 22.25$

Now we can plug into our original formula:

$A = \pi r(r + \sqrt{h^2+r^2})\\A = \pi 9(9+\sqrt{\sqrt{495}^2+9^2}\\A = \pi 9(9+\sqrt{495 + 81}\\A = \pi 9(9+\sqrt{576})\\A = \pi 9(9 + 24)\\A = \pi 9(33)\\A = 297\pi$

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2 years ago

Given:<br> cos(2x)=-1/9<br> Angle x is in quadrant I.<br> Find:<br> cos(x)

sergey [27]

My opinion about this answer is 7

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4 years ago

the actual length of a Corvette is 15 feet. Using the scale factor 1:3, determine the length of the model Corvette in inches

vlada-n [284]

The length of the model will be 5”.

15/3=5

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Acellus equations of lines

jarptica [38.1K]

Answer:

y=1/4x-2

Step-by-step explanation:

formula

y=mx+b

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Oranges are on sale for a $1.59 per pound write a function as a standard equation

Ksivusya [100]

F(x)=1.59x would be the function equation.

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4 years ago