3 years ago

How to factorise 4b squared + 19b

Mathematics

1 answer:

sweet-ann [11.9K]3 years ago

7 0

I hope this helps you

b (4b+19)

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Vesnalui [34]

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3 years ago

What is the formula for the discriminant?

Dennis_Churaev [7]

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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Consider the function f(x) = x^{2/3} on the interval [-1,8].

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The right option is (c). The Mean Value Theorem does not apply since f(x) is not differentiable on (-1,8). Because the derivative of f is 2/3 x^(-1/3) which is undefined at x=0.So, that would imply that it is not differentiable along the interval.

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A survey of 160 students is taken to determine whether they play sports and whether they have a job. Of the 71 students who play

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Answer:

The answer is 44- so B

Step-by-step explanation:

I did the quiz, and that was the correct answer. ( Also I took this on goformative.)

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3 years ago

Scores are 78,81,83, and 76 what must she earn on the fifth test to earn an average test score of 81

iogann1982 [59]

The average value of a data set is equal to the sum of each entry divided by the number of entries. In this case, we have 5 scores, so we can find set up the following equation where x is the fifth score:

$\dfrac{78+81+83+76+x}{5} = 81$

Now solve for x:

$78 + 81 + 83 + 76 + x = 81(5)$

$318 + x = 405$

$x = 87$

The fifth score must be 87.

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3 years ago

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