What is the difference?

Mathematics

1 answer:

Cerrena [4.2K]3 years ago

7 0

Answer:

−2y^2+2y+18

Step-by-step explanation:

the ^ means squared and I would show the steps but I'm just tired rn to do so. hope I was correct

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David saved $175 each month for the first five months and then saved $225 each month for the next five months.

hichkok12 [17]

Answer: 200
Equation: 175 × 5 + 225 × 5 ÷ 10 = 200
Explanation: to find the average, you add up all the numbers, then divide by how many numbers there are.

7 0

3 years ago

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Please Help I Will Mark Brainly

Mandarinka [93]

I do not understand what your asking. Tell me the question.

5 0

4 years ago

A sphere with a radius of 6 cm has the same volume as a cone with a height of 6 cm. What is the radius of the cone?

Advocard [28]

The volume of a sphere is
V_s = 4/3 * pi * r_s^3
The volume of a cone is
V_c = 1/3 * pi * h * r_c^2

Since we know that the two volumes are equal, we can say
V_s = V_c
4/3 * pi * r_s^3 = 1/3 * pi * h * r_c^2

Let us now isolate r_c, the radius of the cone:
4/3*r_s^3 = 1/3 *h*r_c^2
sqrt((4*r_s^3)/h) =r_c = 12 cm

So the radius of the cone is 12 cm

8 0

3 years ago

Solve x2 + 4x – 4 = 0

Damm [24]

Answer:

Quadratic Equations! Yes!

Step-by-step explanation:

Now, there are three methods to solving this:

1.Quadratic Formula

2.Factoring

3. Completing the square

Now, Based on the answers, I think it would be better if we used Quadratic Formula, as you cannot get the answer easily with factoring, and I'm a bit rusty on completing the square.

So, Quadratic Formula! To solve it using this method, we have to find x using this: $x=\frac{-b+-\sqrt{b^{2} -4ac} }{2a}$ (the +- before the square root means it could be both positive or negative)