4 years ago

What is the following product? (Square root 14 - square root 3) (square root 12 + square root 7)

Mathematics

1 answer:

julia-pushkina [17]4 years ago

8 0

Answer:

Step-by-step explanation:

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A model rocket is launched directly upward at a speed of 28 meters per second from a height of 12 meters. The function f(t) = -

Jet001 [13]

Answer:

6.11 seconds

Step-by-step explanation:

Given

$f(t) = -4.9t^2 + 28t + 12$

Required

When will it hit the ground?

When it hits the ground, f(t) = 0.

So, we have:

$0 = -4.9t^2 + 28t + 12$

Solve quadratic equation using formula

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

$t = \frac{-28 \± \sqrt{28^2 - 4*-4.9*12}}{2*-4.9}$

$t = \frac{-28 \± \sqrt{1019.2}}{-9.8}$

$t = \frac{-28 \± 31.92}{-9.8}$

Split

$t = \frac{-28 + 31.92}{-9.8}$ or $t = \frac{-28 - 31.92}{-9.8}$

$t = \frac{3.92}{-9.8}$ or $t = \frac{-59.92}{-9.8}$

$t = -0.4$ or $t = 6.11$

Time can not be negative. So:

$t = 6.11$

6 0

3 years ago

I will mark you brainiest if you can answer this, please help

Marina86 [1]

Answer:

Divide

Step-by-step explanation:

Divide everything on both sides of the equal sign by the coefficient to get rid of it. This only works in this example.

Please Brainliest

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3 years ago

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Find the slope of the line containing the pair of points. (11,8) and (7,negative 2)

crimeas [40]

Answer:-2 1/2

Step-by-step explanation

-2-8=-10

7-11=-4

which gives you -10/-4 which simplifies to -2 1/2

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3 years ago

How to solve for 7/8 X c for c=8

zvonat [6]

Simple 7/8 is being multiplied by 8 or 8/1. When that is multiplied together 7/8*8/1, the 8's cancel each other out, and the answer is 7.

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4 years ago

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What is the constant rate of change between the two quantities in the table?

kotegsom [21]

The answer would be B :)

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3 years ago