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3 years ago

Use the quadratic equation x2+8x−4=0 to answer the questions.

Mathematics

1 answer:

Dennis_Churaev [7]3 years ago

3 0

Answer:

A: 80 B: The discriminant is positive, which means that the equation has two distinct real number solutions.

Step-by-step explanation:

The discriminant is the part under the square root in the quadratic formula, b^2-4ac. [(8)^2]-[4(1)(-4)] = 64-(-16) = 80.

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The ratio of walnuts the milk chocolate chips in a recipe for chocolate chip brownies is 528 a particular batch of brownies has

balu736 [363]

I came up with 3 for the answer

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3 years ago

If f (x)=x^3 + 2x2^-3, what is f (-1)?

scoray [572]

Answer:

Step-by-step explanation:

f(x)=x^3+2x^2-x-1

f(1)=1^3+2(1)^2-1-1

f(1)=1+2*1-1-1

f(1)=1+2-1-1=3-1-1=2-1=1

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3 years ago

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olganol [36]

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3 years ago

I brought 16 packs of cola to a party and each pack had 8 cans. My friend brought 6 cans of juice. How many cans did they bring

umka2103 [35]

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6 0

3 years ago

Heavy football players: Following are the weights, in pounds, for offensive and defensive linemen on a professional football tea

Vaselesa [24]

Answer:

a) Mean = 302.25, Median = 309.5

b) Mean = 276.08, Median = 272

c) Offensive linemen tends to be heavier.

Step-by-step explanation:

We are given the following in the question:

Offense: 325, 292, 316, 308, 325, 263, 302, 311, 265, 329, 267, 324

Defense: 265, 276, 255, 306, 317, 281, 268, 282, 260, 261, 256, 286

a) mean and median weight for the offensive linemen

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{3627}{12} = 302.25$

$Median:\\\text{If n is odd, then}\\\\Median = \displaystyle\frac{n+1}{2}th ~term \\\\\text{If n is even, then}\\\\Median = \displaystyle\frac{\frac{n}{2}th~term + (\frac{n}{2}+1)th~term}{2}$

Sorted Data: 263, 265, 267, 292, 302, 308, 311, 316, 324, 325, 325, 329

$\text{Median} = \dfrac{6^{th}+7^{th}}{2}=\dfrac{308+311}{2} = 309.5$

b) mean and median weight for the defensive linemen

$Mean =\displaystyle\frac{3313}{12} = 276.08$

Sorted Data: 255, 256, 260, 261, 265, 268, 276, 281, 282, 286, 306, 317

$\text{Median} = \dfrac{6^{th}+7^{th}}{2}=\dfrac{268+276}{2} = 272$

c) Comparison

On comparing the mean and median of offensive and defensive linemen, offensive tends to be heavier

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3 years ago