4 years ago

50pts help! consider this quadratic equation. 2x^2-1=3x+4 Which equation correctly applies to the quadratic formula?

Mathematics

2 answers:

eduard4 years ago

7 0

Step-by-step explanation:

im not going to go in to detail but the answer is c

DaniilM [7]4 years ago

4 0

Answer:

Step-by-step explanation:

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4 years ago

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Pls help! i don't understand this! it would rlly help if someone were to explain

shusha [124]

Answer:

C 1

Step-by-step explanation:

x-1/x-2 - x^2+4x-4/(x-2)(x+6)

rewrite: (x-1)(x+6)-(x^2 + 4x - 4)/(x-2)(x+6)

expand x^2+6x-x-6-x^2-4x+4/(x-2)(x+6)

collect like terms (x^2-x^2)+(6x-x-4x)+(-6+4)/(x-2)(x+6)

simplify x-2/(x-2)(x+6)

cancel x-2 and get 1/x+6

but that is the only answer I can get from this, so I believe many one, just because of the numerator

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3 years ago

Theoretically, if the spinner is spun 150 times, how many times would you expect to get an even number?

Inessa05 [86]

Answer:

Step-by-step explanation:

If there is 6 even numbers and 6 odd numbers, then the spinner would land on an even number half the time. Half of 150 is 75 so the answer is 75.

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3 years ago

Please help need to finish ASAP

jok3333 [9.3K]

Look at the picture.

The triangle ADC and the triangle CDB are similar.

Therefore corresponding sides are all in the same proportion:

$\dfrac{y}{4}=\dfrac{12}{y}\ \ \ \ |cross\ multiply\\\\y^2=48\to y=\sqrt{48}\\\\y=\sqrt{16\cdot3}\\\\y=\sqrt{16}\cdot\sqrt3\\\\y=4\sqrt3$

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3 years ago

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The answer is A

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