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3 years ago

What are the zeros of the function f(x) = 10x2 + 9x + 2?

Mathematics

1 answer:

Gnom [1K]3 years ago

8 0

Answer:

x = -4/5 and -1/2

Step-by-step explanation:

"Finding zeroes" means find the x-values that make f(x) = 0, so we have...

0 = 10x² + 9x + 2

Use quadratic equation to solve...

x = [-9 ± √(9² - 4(10)(2))]/[2(10)]

x = [-9 ± √(81 - 80)]/20

x = [-9 ± √1]/20

x = [-9 ± 1]/20

x = (-9 + 1)/20 and (-9 - 1)/20

x = -8/20 and -10/20

x = -4/5 and -1/2

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3 years ago

Solve for x: three fourths times x plus five fourths equals four times x

Nostrana [21]

Answer:

x equals five thirteenths

Step-by-step explanation:

To solve this, we will follow the steps below;

$\frac{3}{4}$ × x + $\frac{5}{4}$ = 4 × x

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subtract 3x from both-side of the equation

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Divide both-side of the equation by 13

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7 0

3 years ago

Mrs. Blanda's truck holds 19.7 gallons of gas. She used 4 full tanks fo gas last month and paid $3 for each gallon. How much did

Yakvenalex [24]

Answer:

$236.40

Step-by-step explanation:

Mrs. Blanda's truck holds 19.7 gallons of gas. She used 4 full tanks of gas last month.

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4 full tank = 78.8 gallons of gas used last month

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4 years ago

What is f(-x), if f(x)=2|x|+3x

a_sh-v [17]

F(-x) = 2/-x/ + 3(-x) = 2/x/ - 3x;

6 0

3 years ago