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3 years ago

I need to find f(-2) help :(

Mathematics

2 answers:

Llana [10]3 years ago

5 0

The answer is 4.

explanation:

Fed [463]3 years ago

3 0

Answer:

Step-by-step explanation:

Use the first equation cause -2 < -1

-2(-2) = 4

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Identify the number soutions 5y^3-3y^2+8y=0

PtichkaEL [24]

Answer: 0

Step-by-step explanation:

Step 1: factor left side of equation

y(5y^2-3y+8)=0

Step 2: set factors to equal zero

y=0 or 5y^2-3y+8=0

y=0

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3 years ago

Which expression is equivalent to 3(x-2) +2x

Gala2k [10]

Answer:

5x-6

Step-by-step explanation:

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3 years ago

What is the solution for <br> 8x+10=3x+5y

coldgirl [10]

Answer:

first you have to move the varible so

5x +10=5y

then thats as far as i can go

good luck

5 0

4 years ago

Read 2 more answers

How do you draw the graph?

Doss [256]

Answer:

right

Step-by-step explanation:

draw a line and right a number from 1 to 10

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2 years ago

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:

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

5 0

2 years ago