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4 years ago

What is the y intercept of f(x)=2x^2+8x+6

Mathematics

1 answer:

xxMikexx [17]4 years ago

3 0

Answer:

6 is the y intercept

Step-by-step explanation:

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Triangle PQR is similar to triangle XYZ. What is the perimeter of triangle XYZ? A. 3in.

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4 years ago

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Jon is hitting baseballs. When he tosses the ball into the air, his hand is 5 feet above the ground. He hits the ball when it fa

vazorg [7]

Answer:

Time that will pass before Jon hits the ball is 0.5 seconds

The maximum height the ball attains is 6.875 feet

Step-by-step explanation:

Step 1: To find out how much time passes before Jon hits the ball

The height he hits the ball when it falls is 4 feet

so,

$4 = - 16t^2 + 6t + 5$

$4 + 16t^2 - 6t - 5 = 0$

$16t^2 - 6t -1 = 0$ -------------------------(1)

Solving eq(1) using quadratic formula, we get

$t = \frac{-b \pm\sqrt{b^2-4ac}}{2a}$

$t = \frac{-(-6) \pm\sqrt{(-6)^2-4(16)(-1)}}{2(16)}$

$t = \frac{6 \pm\sqrt{36+64}}{32}$

$t = \frac{6 \pm\sqrt{100}}{32}$

$t = \frac{6 \pm10}{32}$

Taking only the positive value

$t = \frac{16}{32}$

t = 0.5 seconds

Step 2: To find the maximum height of the ball

Max height will be reached at [ $\frac{-b}{2a}$ ] sec

$=\frac{-b}{2a}$

$\\ = \frac{-(-6)}{2\times16}\\$

$= \frac{6}{32}$

Now the height at t= $\frac{6}{32}$ is

$16( \frac{6}{32})^2 - 6( \frac{6}{32}) -1 = h$

$( \frac{6}{2})^2 - \frac{36}{32} -1 = h$

$( 3)^2 - 1.125 -1 = h$

$9 - 1.125 -1 = h$

6.875 = h

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4 years ago

Write 0.3×0.3×0.2×0.2×0.3×0.3 in index form

frosja888 [35]

Answer:

0.3*0.3*0.3*0.3=0.3⁴

0.2*0.2=0.2²

0.3×0.3×0.2×0.2×0.3×0.3 = 0.3⁴ * 0.2²

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3 years ago

What customary unit would be most appropriate to measure the length of a

julsineya [31]

<span>D. inches, as this is the shortest and most appropriate measure of length !
Hope this assists you!</span>

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3 years ago

PLZ FIRST ANSWER HELP ME 20 POINTS

gtnhenbr [62]

Answer:

300x10=3,000

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Step-by-step explanation:

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