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2 years ago

WILL GIVE BRAINLIEST!!!JUST HELP PLEASE!

Mathematics

1 answer:

aliya0001 [1]2 years ago

6 0

Answer:

uhhh… i dunno

Step-by-step explanation:

sry i cannot help u w/ this

Can u just put brainliest for this pls?

Thanks!

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Solve each equation 3x^2=80

Lapatulllka [165]

Answer:

$x = \frac{4\sqrt{15}}{3}, x = \frac{-4\sqrt{15}}{3}$

$x = \frac{\pm4\sqrt{15}}{3}$

Step-by-step explanation:

Hello!

Use the quadratic formula: $x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$

First, let's convert our equation to standard form of a Quadratic: ax² + bx + c = 0

3x² = 80

3x² - 80 = 0

Note, thats the value of b will be 0, as there is no "bx"

Now, solve:

$x = \frac{-(0) \pm \sqrt{(0)^2 - 4(3)(-80)}}{2(3)}$ Plug in values
$x = \frac{\pm\sqrt{960}}{6}$ Simplify the radical (Discriminant)
$x = \frac{\pm8\sqrt{15}}{6}$ Pull out perfect squares
$x = \frac{4\sqrt{15}}{3}, x = \frac{-4\sqrt{15}}{3}$ Reduce factors

The solutions are $x = \frac{4\sqrt{15}}{3}, x = \frac{-4\sqrt{15}}{3}$

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2 years ago

In a pet store the number of birds is 10 less than twice the number of rabbits. if the pet store has 56 birds, how many rabbits

mr Goodwill [35]

B = 2r - 10
b = 56

56 = 2r - 10
56 + 10 = 2r
66 = 2r
66/2 = r
33 = r <=== there are 33 rabbits

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lora16 [44]

Answer:

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I'm not so sure that it does

Step-by-step explanation:

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