3 years ago

WILL GIVE BRAINIEST TO THE BEST ANSWER (multiple choice question)

Mathematics

1 answer:

Sladkaya [172]3 years ago

7 0

Answer:

im going to say c is the answer to this question

You might be interested in

Factor the quadratic equation below to reveal the solutions. X^2+4x-21=-9

a_sh-v [17]

Answer:

x = 3 and x = -7

Step-by-step explanation:

The given quadratic equation is $x^2+4x-21=0$ . We need to find the solution of this equation.

If the equation is in the form of $ax^2+bx+c=0$ , then its solutions are given by :

$x=\dfrac{-b\pm \sqrt{b^2-4ac} }{2a}$

Here, a = 1, b = 4 and c = -21

Plugging all the values in the value of x, such that :

$x=\dfrac{-b+ \sqrt{b^2-4ac} }{2a},\dfrac{-b- \sqrt{b^2-4ac} }{2a}\\\\x=\dfrac{-4+ \sqrt{(4)^2-4\times 1\times (-21)} }{2(1)},\dfrac{-4- \sqrt{(4)^2-4\times 1\times (-21)} }{2(1)}\\\\x=3, -7$

So, the solutions of the quadratic equation are 3 and -7.

6 0

3 years ago

Ignore my 1st one!<br> Find the value of x.

elixir [45]

12^2+x^2=15^2
144+x^2=225
- 144 -144
=81= 9
X=9

7 0

2 years ago

Read 2 more answers

QUICK WHATS THE ANSWER!!!!

Evgen [1.6K]

Answer:

It’s triangular prism

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

True or false by definition a simple random sample of size n

Sophie [7]

True

I hope I helped you out

7 0

3 years ago

A. If a spacecraft was parked on Venus and needed to make a flight to Jupiter, how far would it need to travel? Show your work a

ivann1987 [24]

Answer:

not sure

Step-by-step explanation:

hope it helps and use brainly it never lies

8 0

3 years ago