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frosja888 [35]
3 years ago
8

Use the quadratic formula to find the complex solutions to the equation 10x2 – x + 9 = 0.

Mathematics
1 answer:
melomori [17]3 years ago
7 0

Quadratic formula: (-b +/- sqrt(b^2 - 4ac)) / 2a

a = 10

b = -1

c = 9

1 +/- sqrt((-1)^2 - 4(10)(9)) / 2(10)

1 +/- sqrt(1 - 360) / 20

x = 1 +/- sqrt(359i) / 20

Hope this helps!

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Harrison ,Tad and dale ride their bikes to school Harrison rides 3/4 mile,Tad rides 3/8 and dale rides 3/6 mile. Compare and ord
masya89 [10]

Answer:

3/8 , 3/6. 3/4

Tad drove the least miles because the miles ridden is less than both 3/6 and 3/4 miles

Dale rode the second greatest mile because the miles ridden is greater than 3/8 but less than 3/4

Harrison rode the greatest mile because the miles ridden is greater than both 3/6 and 3/8

Step-by-step explanation:

to order the miles ridden , convert the fraction to decimals. to do this, divide the numerator by the denominator

3/4 = 0.75

3/6 = 0.5 miles

3/8 = 0.374

7 0
3 years ago
Select all the expressions that are equivalent to 16x - 2 - 24x + 4?
Mekhanik [1.2K]
16x - 2 - 24x + 4 = -8x + 2
None of the answers provided are equal to this?
8 0
3 years ago
AC is tangent to circle O at point C. What is the length of AB?
DochEvi [55]

The length of AB is 9.

Solution:

Given data:

Radius OC = 8

Tangent AC = 15

The angle between the tangent and radius is always right angle.

∠C = 90°.

Hence OCA is a right triangle.

Using Pythagoras theorem,

<em>In a right triangle square of the hypotenuse is equal to the sum of the squares of the other two sides.</em>

OA^2=15^2+8^2

OA^2=225+64

OA^2=289

OA^2=17^2

Taking square root on both sides of the equation, we get

OA = 17

OB is the radius of the circle.

⇒ OB = 8

AB = OA – OB

     = 17 – 8

     = 9

AB = 9

Hence the length of AB is 9.

4 0
4 years ago
Read 2 more answers
Simplify (1/4 ad^3)^2
Dima020 [189]
That "ad^3" bothers me; I'm not sure what you mean here.

I'm going to assume that you have     (1/4*a*d^3)^2.

If that's the case, then you have (1/4)^2 * a^2 * d^6 = (1/16)*a^2*d^6.

If this is not what you were hoping for, double check to ensure that you have copied down this problem exactly as it was presented.


7 0
3 years ago
The area of a rectangle is 44m2 , and the length of the rectangle is 3m
Grace [21]

Answer:

width=11/2

length=8

Step-by-step explanation:

44=(2w-3) x w <em>area for a rectangle (44) = the length (2w-3) times the width (w)</em>

44=2w^2 - 3w  <em>distribute</em>

2w^2-3w-44 = 0 <em>subtract 44 from both sides</em>

(w+4)(2w-11) <em>factor</em>

width=11/2

(11/2 x 2) - 3

length = 8

3 0
2 years ago
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