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zysi [14]
3 years ago
11

3.9 practice complete your assignment english 111

Mathematics
1 answer:
Citrus2011 [14]3 years ago
3 0
The answer is 15.9 because 3.9+111=15.9
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Help? high school pre cal
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Answer:

B. 2, -0.5

Step-by-step explanation:

Given the equation

-2x^2+2=-3x

Rewrite it as

-2x^2+3x+2=0

Graph the graph of the quadratic function y=-2x^2+3x+2

The grapg of this function is a parabola going downwards.

This parabola intersects the x-axis at points x = -0.5 and x = 2, so the solutions of the equation are x = -0.5 and x = 2

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Step-by-step explanation:

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2 years ago
Which best describes a triangle with side lengths of 6in 8in and 9in ​
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Step-by-step explanation:

3 0
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Finger [1]

<u>ANSWER: </u>

If a ball is thrown into the air with a velocity of 34 feet per second, then velocity of the ball after 1 second is 2 feet per second

<u>SOLUTION: </u>

Given, a ball is thrown into the air with a velocity of 34 feet per second

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And also given a relation between displacement and time = \mathrm{y}=34 \mathrm{t}-16 \mathrm{t}^{2} --- eqn 1

We need to find the velocity when t = 1 ; v = ?

We know that, v = u + at and \mathrm{s}=\mathrm{ut}+\frac{1}{2} \mathrm{at}^{2}

where v is instantaneous velocity and u is initial velocity

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34 \times 1+\frac{1}{2} \times a \times 1^{2}=18

34+\frac{a}{2}=18

\begin{array}{l}{\frac{a}{2}=18-34} \\\\ {\frac{a}{2}=-16} \\ {a=-16 \times 2} \\ {a=-32}\end{array}

here, -ve sign indicates that object is in deceleration . so acceleration is -32 ft/s

now put a value in v = u + at

v = 34 + (-32)(1)

v = 34 – 32

v = 2 ft/s

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Answer:D, “the number of calories...”

Step-by-step explanation:

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