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3 years ago

12

To solve the equation 4-3x2 - 7x=0 using the quadratic formula, what are the values of a, b, and c?

1 answer:

mafiozo [28]3 years ago

5 0

It should be a=-3 b=-7 c=4

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What is the logarithmic form of the equation e3x ≈ 3247?

lesya [120]

E^(3x) = 3247

3x = log 3247

x = [log 3247]/3

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3 years ago

Tommy has the following data:

VMariaS [17]

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2 years ago

Please help!! :) Will give brainliest!

stich3 [128]

Answer is A
144 + 12y + y^2

if perfect square should be
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3 years ago

The height of a football during a punt is modeled by h=-16t^2+60t+3. If the football hits the ground, how long did it stay in th

weqwewe [10]

"how long..." is asking for time (t). "The amount of time spent in the air" is the time from when the ball was kicked (0 seconds) to the time it landed on the ground. Need to find the x-intercepts (one will be negative which will be invalid). You can do this by factoring ... <em>or by using the quadratic formula.</em> With the equation you provided, it is not factorable, so you must use the quadratic formula.

h = -16t² + 60t + 3

a=-16 b=60 c=3

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

$t = \frac{-60 +/- \sqrt{60^{2}-4(-16)(3) } }{2(-16)}$

$t = \frac{-60 +/- \sqrt{3600 + 192} }{-32}$

$t = \frac{-60 +/- \sqrt{3792} }{-32}$

$t = \frac{-60 +/- 61.6}{-32}$

$t = \frac{-60 + 61.6}{-32}$ or $t = \frac{-60 - 61.6}{-32}$

$t = \frac{1.6}{-32}$ or $t = \frac{-121.6}{-32}$

t = -0.05 or t = 3.8 <em>disregard the negative</em>

Answer: 3.8 seconds

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3 years ago

Find the slope and y intercept

zepelin [54]

Answer:

slope = -1

y intercept (0,-2)

Step-by-step explanation:

We can use the two points to find the slope

(-4,2) and (1,-3)

m = ( y2-y1)/(x2-x1)

= (-3 -2)/(1 - -4)

= -5 /(1+4)

= -5/5

- 1

The y intercept is where it crosses the y axis

y intercept is (0,-2)

5 0

2 years ago