All categories

3 years ago

F (x) = -3x+5x^2+8 has blank roots.

Mathematics

1 answer:

defon3 years ago

7 0

Answer:

F (x) = -3x+5x^2+8 has complex roots.

Step-by-step explanation:

number of roots?

ok.

f(x) = 5xx - 3x + 8 = 5xx + 5x - 8x + 8 ( I was guessing what numbers would sum to -3)

nope.

ok try discriminant: (-3)^2 - 4*5 * 8 = 9 - 160 < 0

2 complex roots

You might be interested in

How do i solve this equation? and could you show it to me step by step?

ipn [44]

The answer is 8 and yea it’s 2 steps first u have to remove the constant so u subtract 74-2=72 and 2-2=0. After u get rid of the constant u divide both sides by 9 basically 72/9 and 9/9 which is 8. So n is equal to 8 I hope this helped. I know it can be confusing

4 0

3 years ago

The area of the square is 225 square centimeters. What is the length of each side?

kirill [66]

The answer is 15, to find this take 225 and square root

The area of a square is length times length( or side times side) . 15 times 15 is 225

4 0

2 years ago

Read 2 more answers

Kellogg's produced 715000 boxes of cornflakes this year. This was 110% of annual production last year. What was last year's annu

Charra [1.4K]

Let last year product be x boxes.

110% of x means $\displaystyle{ \frac{110}{100}\cdot x$ .

Thus, we solve the equation:

$\displaystyle{ \frac{110}{100}\cdot x=715,000$ .

Multiplying both sides by $\displaystyle{ \frac{100}{110}$ , we have:

$\displaystyle{ x=715,000 \cdot \frac{100}{110}=650,000$ .

Answer: Last <span>year's annual production was 650,000 boxes.</span>

6 0

3 years ago

I need help with this please

Gnoma [55]

Answer:

He started with 180.

Step-by-step explanation:

If 90 is 50% of what he started with, then the other 50% is 90

4 0

2 years ago

Tina is making a frame for a picture she drew. The length of the picture is 11 1/9 inches, and the width of the picture is 7 1/4

77julia77 [94]

Answer:

3 31/36 inches

Step-by-step explanation:

11 1/9 = 100/9

7 1/4 = 29/4

100/9 = 400/36

29/4 = 261/36

400/36 - 261/36 = 139/36

139/36 = 3 31/36

3 0

2 years ago