3 years ago

Which is a solution to the equation 3x^2 + 2x − 20 = 2x^2 + 15?

Mathematics

1 answer:

pychu [463]3 years ago

6 0

the answer is b)-7 or it could be 5

You might be interested in

Find the value of X. 45 and 48 whats the x

Anuta_ua [19.1K]

Answer: 93

Step-by-step explanation:

I'm not sure is this is right but I think it means 45+48 which equals 93. does it say anything else?

6 0

3 years ago

Read 2 more answers

I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THE MATH QUESTION RIGHT NOOOO SCAMS PLEASE

Dennis_Churaev [7]

Answer:

if I am not mistaking It's the second one 81 now I might be wrong so if so I am sorry

3 0

3 years ago

Sonia was given a bouquet of flowers for valentines day 2/3 of the flowers were roses and 1/3 of them were tulips. If there were

jarptica [38.1K]

4 because if 8 equals 2/3's of the bouquet you halve the number so 1/3 is 4

4 0

4 years ago

I need to find out how long it takes him to hit the water

bearhunter [10]

Answer:

1.26

Step-by-step explanation:

When he hits the water, the height will be 0. Substitute h=0.

$0 = -16t^2+2t+23$

Solve using the quadratic equation.

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

Substitute a = -16, b=2, and c=23.

$x = \frac{-b+/-\sqrt{b^2-4ac} }{2a}\\\\x = \frac{-2+/-\sqrt{(-2)^2-4(-16)(23)} }{2(-16)}\\\\x = \frac{-2+/-\sqrt{4+1472} }{-32}\\\\x = \frac{-2+/-\sqrt{1476} }{-32}\\x = \frac{-2+/-38.4}{-32}\\x = \frac{-2+38.4}{-32}=\frac{36.6}{-32}=-1.14\\or\\x = \frac{-2-38.4}{-32}=\frac{-40.4}{-32}=1.26$