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3 years ago

Pls help i really really need it, the question is on the picture

Mathematics

1 answer:

Leokris [45]3 years ago

3 0

Answer:

12/5

Step-by-step explanation:

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Consider this quadratic equation. 2x2 − 1 = 3x + 4 Which equation correctly applies the quadratic formula?

Mariulka [41]

Answer:

$\frac{-(-3)+-\sqrt{(-3)^2-4(2)(-5)}}{2(2)}$

Step-by-step explanation:

Quadratic formula: $\frac{-b+-\sqrt{b^2-4ac} }{2a}$

$2x^2-1=3x+4\\\\2x^2-3x-5=0\\\\\\frac{-(-3)+-\sqrt{(-3)^2-4(2)(-5)}}{2(2)} \\\frac{3+-\sqrt{9+40} }{4}$

$x = \frac{3+-7}{4}$

Hope this helps and God bless!

6 0

2 years ago

It takes Ben 2 days to write reports, and it takes Kate 3 days to write reports. Bens rate, in reports per day, is how much grea

sergejj [24]

Answer:

Ben's rate is $\dfrac{1}{6}$ greater than Kate's rate.

Step-by-step explanation:

1. If it takes Ben 2 days to write reports, then his rate is $\dfrac{1}{2}$ of reports per day.

2. If it takes Kate 3 days to write reports, then her rate is $\dfrac{1}{3}$ of reports per day.

3. Ben's rate is

$\dfrac{1}{2}-\dfrac{1}{3}=\dfrac{3-2}{6}=\dfrac{1}{6}$

greater than Kate's rate.

4 0

3 years ago

0.5x + 6 > 3<br> I don’t know how to solve

Advocard [28]

Answer:

x > -6

Step-by-step explanation:

Move 6 to the other side:

0.5x > -3

x > -6

3 0

3 years ago

H E L P P P P P P P PP P P P P P P P P P P P PP. PP. P PP P P P P P P P P P P P P P P P P PP P. PP P P P P P P P. P P

Anni [7]

X=69 for the second one

5 0

3 years ago

Read 2 more answers

Help to solve -7 - 3a = 1 - 4a

Evgesh-ka [11]

Answer:

-7 - 3a = 1 – 4a

Step one: Add 4a to -3a

-7 + a = 1

Step two: Add 7 to 1

A = 8

You're done! A=8 for this problem!

Hopefully this helps! Feel free to mark brainliest!

6 0

3 years ago

Read 2 more answers