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storchak [24]
4 years ago
15

The vocabulary not understand this

Mathematics
1 answer:
Alja [10]4 years ago
8 0
1. square root

2. irrational number

3. positive
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Solve using the quadratic formula 1
Alex777 [14]

Answer:

Step-by-step explanation:

Unless we set x^2 + 8x + 15 equal to zero, we don't have an equation to be solved.  I will assume that the problem is actually x^2 + 8x + 15 = 0.

The coefficients of this quadratic are {1, 8, 15}, and so the "discriminant" b^2 - 4ac is (8)^2 - 4(1)(15), or 4.  Because the discriminant is positive, we know that there are two real, unequal roots.

Continuing with the quadratic formula and knowing that the discriminant is 4, we get:

      -8 ± √4           -8 ± 2

x = ---------------- = --------------- , or x = -2 ± 1:  x = -3 and x = -5

          2                       2

5 0
3 years ago
Determine the slope and y-intercept <br><br> -6x-5y=15
Delicious77 [7]
The slope of a line in form ax+by=c is -a/b
the yint of the line is c/b


so

-6x-5y=15
slope=-(-6)/-5=6/-5=-6/5
yint is 15/-5=-15/5=-3

slope=-6/5
yint is -3

or you could just do slope intercept and solve for y
y=mx+b
m=slope
b=yintercept

slope=-6/5
yint is -3
6 0
3 years ago
Read 2 more answers
Need help with number 5.
r-ruslan [8.4K]
So youve done good so far.
So picking up from : (x^2-x-12)-2(x-4)
-First distribute the (-2) to each factor.
(x^2 - x - 12) -2x + 8
-Then just add variables with the same exponent
x^2 - 3x - 4
Done!
4 0
3 years ago
What is the range of the data?
PilotLPTM [1.2K]

Answer:

is the difference between highest and lowest values.

Step-by-step explanation:

6 0
3 years ago
Can someone please help me!
Amanda [17]

9514 1404 393

Answer:

  $970

Step-by-step explanation:

If we assume that the $1295 selling price of the first color television was paid to Camarena, and that he had no costs other than the ones described, then his profit was ...

  $1295 -25 -300 = $970

4 0
3 years ago
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