80% of 22 can be written in the following ways:

1) 80% of 22 = 17.6

2) 0.8 x 22 = 17.6
The percentage is converted into decimal form.

3) 80/100 x 22 = 17.6
The percentage is converted into fraction form.

80/100 can be simplified to 4/5, and the point 3 can also be written as:

4) 4/5 x 22 = 17.6

Thus, following options have the same value as 80% of 22.
Option <span>A. 80/100 ⋅ 22
Option </span><span>D. 0.8 ⋅ 22
Option E. 4/5 ⋅ 22</span>

3 0

3 years ago

Determine the number of real solutions for the equation: 6x^2+8x=7

densk [106]

Answer:

Step-by-step explanation:

You could factor this to find out how many real roots you have, but it's easier to use the rule of the discriminate. The discriminate comes from the quadratic formula:

$b^2-4ac$

Plug in the numbers from the quadratic and see what the value of it is. If the:

discriminate < 0, you have 2 imaginary roots

discriminate = 0, you have 1 real root, multiplicity 2 and

discriminate > 0, you have 2 real roots

Our b is 8, our a is 6 and our c is -7 (remember you have to set the polynomial equal to 0 to do this).

$8^2-4(6)(-7)=232$

Because 232 is > 0, we have 2 real roots.

7 0

2 years ago