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Alex_Xolod [135]
3 years ago
12

Using the discriminant, how many real solutions does the following quadratic

Mathematics
1 answer:
vazorg [7]3 years ago
5 0

Answer:

D one real solution

Step-by-step explanation:

x^2 - 8x + 16 = 0

This is in the form

ax^2 +bx + c = 0

so we can use the discriminant to determine the number of solutions

b^2 -4ac

(-8)^2 -4(1)(16)

64 - 64

0

Since the discriminant is zero, there is one real solution.

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I need to factor 5a^2 + 7a + 6b^2 - 4b  but I can't figure it out.......could it possibly be prime?
DiKsa [7]
I kind of forgot how to do it but here is what I know so far : first you separate the two parts into (5a^2 + 7a) + (6b^2-4b). This process is called grouping. Now you find the greatest common factor in both of them which later your equation will be a(5a + 7) +2b(3b - 2). That is all I can remember so hope that helped
7 0
3 years ago
What radius of a circle is required to inscribe a square with an apothem of 6.364 inches?
Afina-wow [57]
Apothem = 6.364
radius^2 = 6.364^2 + 6.364^2
<span><span><span>radius^2 = 81</span></span></span>
radius = 9



4 0
3 years ago
Read 2 more answers
Which statement best describes the function h(t) = 210 – 15t?
storchak [24]

Answer:

h(t) is a linear function with a slope of -15.

Step-by-step explanation:

6 0
3 years ago
How do I find the median for a congruent triangle
Andrej [43]
The length of a median is equal to half the square root of the difference of twice the sum of the squares of the two sides of the triangle that include the vertex the mediam is drawn from and the square of the side of the triangle the median is drawn to.

triangle sides by a, b, c.

ma=122c2+2b2−a2

mb=122c2+2a2−b2

mc=122a2+2b2−c2

3 0
3 years ago
What is the radius of a sphere with a volume of 7961 cm", to the nearest tenth of a<br> centimeter?
statuscvo [17]

Answer:

12.4 cm

Step-by-step explanation:

Use the sphere volume formula, V = \frac{4}{3}\pir³

Plug in the volume and solve for r, the radius:

V = \frac{4}{3}\pir³

7961 = \frac{4}{3}\pir³

1900.55 = r³

12.39 = r

So, the radius of the sphere is approximately 12.4 cm

6 0
3 years ago
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