3 years ago

The area of a triangle is 3x3-16x²+9x+28 and the base is x-4. Use synthetic

Mathematics

1 answer:

zalisa [80]3 years ago

7 0

Answer:

Step-by-step explanation:

If "3x3" is supposed to be 3x³, you need to use ^ to indicate that there is an exponent. 3x^3 = 3x³.

area = ½(x-4)(height) = (3x³-16x²+9x+28)

height = 2(area)/(x-4)

Using synthetic division, (3x³-16x²+9x+28) ÷ (x-4) = 3x²-4x-7

height = 2(3x²-4x-7) = 6x² - 8x- 14

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Solve 9x^2- 17x- 85 = 0 Give your solutions correct to 3 significant figures.

dybincka [34]

Answer:

$x =\frac{17}{18} +\frac{1}{18} \sqrt{3349}$ OR $x =\frac{17}{18} +\frac{-1}{18} \sqrt{3349}$

Step-by-step explanation:

9x2−17x−85=0

For this equation: a=9, b=-17, c=-85

9x2+−17x+−85=0

Step 1: Use quadratic formula with a=9, b=-17, c=-85.

$x =\frac{-b + \sqrt{b^{2}-4ac } }{2a}$

$x =\frac{-(-17)+\sqrt{(-17)^{2} -4(9)(-85)} }{2(9)}$

$x =\frac{17}{18} +\frac{-1}{18} \sqrt{3349}$

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2 years ago

A name brand cereal is on sale and costs $4.50 for an 18.2oz box. The great value brand version of the cereal costs $4.03 for a

KengaRu [80]

Answer:

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3 years ago

paul is born on his grandfather 60th birthday. In how many years will is Grandfather be 11 times as old as Paul?

Allushta [10]

Maybe is 71 because 60 + 11 is 71 and is basically saying when paul turns 11 how old will his grandfather be ...

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3 years ago

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Find the probability that a randomly generated bit string of length 10 does not contain a 0 if bits are independent and if a) a

Ilya [14]

Answer:

Step-by-step explanation:

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3 years ago

Plz I need help with this ASAP

Oduvanchick [21]

Answer:

x = 13 and x = -3

Step-by-step explanation:

divide each side by 2 first and get:

(x-5)² = 64

take the square root of each side next and get:

x - 5 = $\sqrt{64}$

x - 5 = 8 and x - 5 = -8

x = 13 and x = -3

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2 years ago