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ira [324]
3 years ago
6

Which of the following is a solution of x2 + 4x + 10?

Mathematics
2 answers:
Sloan [31]3 years ago
4 0

Answer:

x=2+-i \sqrt{6}

Step-by-step explanation:

x^2 + 4x + 10

To find out the solution we set the expression =0 and solve for x

x^2 + 4x + 10=0

Apply quadratic formula to solve for x

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

a=1, b=4, c=10 plug in the values in the formula

x=\frac{-4+-\sqrt{4^2-4(1)(10)}}{2a}

x=\frac{-4+-\sqrt{-24}}{2(1)}

The value of square root (-1) is 'i'

x=\frac{-4+-2i\sqrt{6}}{2}

Divide each term by 2

x=2+-i\sqrt{6}

sattari [20]3 years ago
3 0
X^2+4x+10=0

x^2+4x=-10

x^2+4x+4=-6

(x+2)^2=-6

x+2=±i√6

x=-2±i√6

So the correct answer is the third one down from the top.
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Find an equation of the line having the given slope and containing the given point.
mart [117]

Answer:

y=8x-69

Step-by-step explanation:

you would use the equation y-y1 = m (x - x1)

plug in m = 8 , y1 = 3, x1 = 9

now you have y - 3 = 8 (x-9)

distribute 8 --> y-3 = 8x - 72

add three to both sides to get y = 8x - 69

6 0
2 years ago
If i have 4 pounds of beef and it costs $9.56 how much would it cost me if I had 1 pound of beef
Morgarella [4.7K]

to do this just divide 9.56 by 4 to get $2.39

4 0
3 years ago
Read 2 more answers
Sammy and David were selling water bottles to raise money for new football uniforms famous or 5 water bottles for every 3 water
ANTONII [103]
In the given question, we come to know that Sammy sold 5 bottles for every 3 water bottles sold by David. In this case we get the ratio as 5:3
Now this ratio indicates that the total number of bottles can be divided into 8 parts for finding out a single part. the total number of water bottles that are sold by Sammy and David together are 160.
Now on dividing this total number of bottles by 8 we get the 20 as one part.
The,
Number of Bottles sold by Sammy = 5 * 20
                                                         = 100
Number of bottles sold by David = 3 * 20
                                                   = 60
So Sammy sold 100 water bottles and David sold 60 water bottles from the total of 160 water bottles.
8 0
3 years ago
Help. only questions 3 & 4 .
Maksim231197 [3]

I'm doing 3

     For 3, using a table is very similar to a double number because the numbers are matching up in both ways.

         On the bottom of a double number line we have like, for example,-- the bottom of the double number line would have batches. And its 1, 2, 3 ,4 , etc.

         And on a table, it would be the same, the numbers on both diagrams have the same methods, have same way of lining things up but they're just drawn differently.

                Hope this helped!

 

3 0
3 years ago
Write 5.24 in expanded form
Katarina [22]
This is how you write 5.24 in expanded form 5+0.2+0.04
4 0
3 years ago
Read 2 more answers
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