3 years ago

What is the formula for the discriminant?

1 answer:

4 0

Answer:

In the case of a quadratic equation ax2 + bx + c = 0, the discriminant is b2 − 4ac; for a cubic equation x3 + ax2 + bx + c = 0, the discriminant is a2b2 + 18abc − 4b3 − 4a3c − 27c2.

Step-by-step explanation:

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Angela decides to recycle a large oatmeal container by using it to hold a friends birthday gift. Then she wraps the container in

Deffense [45]

Answer:

D. 135.37 in²

Step-by-step explanation:

We have that the gift paper consists of two circles and a square.

Thus, we will need to find the area of the circles and the square.

Now, as the diameter of the circle = 4 inches

So, the radius of the circle = $\frac{4}{2}$ = 2 inches

Since, the area of a circle = $\pi r^{2}$

This implies that area of the two circles = $2\times \pi r^{2}$

i.e. Area of the circles = $2\times \pi 2^{2}$

i.e. Area of the circles = $8\pi$

i.e. Area of the two circles = 25.133 in²

Further, one side of the square = 10.5 inches

Thus, the area of the square = $side^{2}$

i.e. Area of the square = $10.5^{2}$

i.e. Area of the square = 110.25 in²

So, the overall area of the gift paper = 25.133 + 110.25 = 135.37 in².

Hence, the amount of paper used by Angela is 135.37 in².

7 0

3 years ago

Karen earns $5 by delivering newspapers each week. She saves $3 and she spends the rest. How many weeks will it take her to save

8090 [49]

Answer:

12 Weeks.

( Is this what you were asking for? <3 )

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2 years ago

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patriot [66]

I think You should break it down to the First and third One because of

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3 years ago

Factor: m^2 - 20m - 21

Ganezh [65]

(m-21) (m+1)there I thinks it's right unless I messed up my work

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3 years ago

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Can a triangle can have sides with lengths 2.7, 3.5, and 9.8.

blagie [28]

Answer: No

Step-by-step explanation:

2.7 + 3.5 is not greater than 9.8.

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3 years ago

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