All categories

3 years ago

What is the discriminant of the equation below? X^2 - 8x - 2 = 0

Mathematics

1 answer:

LUCKY_DIMON [66]3 years ago

4 0

Answer:

Step-by-step explanation:

b^2 - 4ac > 0

(-8)^2 - 4(1)(-2) = 64 + 8 = 72

two solutions

You might be interested in

-3x + 7 = 1<br> what dose x represent

olchik [2.2K]

Answer:

the answer is x=3

Step-by-step explanation:

-3x=1-7

-3x=-6

-x=-6+3

-x=-3

x=3

3 0

3 years ago

Here are some points, have a good day!

Mnenie [13.5K]

Answer:

.....

Step-by-step explanation:

................thanks.......

6 0

3 years ago

Read 2 more answers

Jonas builds a snow fort. He tells his friends it is 0.8 meters tall inside, but he rounded the height to the nearest tenth. Whi

Lelu [443]

Answer:

0.77

Step-by-step explanation:

If you had to round to the nearest tenth, 0.89 would round to 0.9. 0.74 would round down to 0.7. 0.85 would also round up to 0.9, which leaves the last answer, 9.77 to be rounded to 0.8. Hope this helps

5 0

3 years ago

What the slope and y intercept ? and how did you find it ?

EastWind [94]

Answer:

Slope: $m=4$

y-intercept: $b=-1$

Step-by-step explanation:

The equation of the line in Slope-Intercept form is:

$y=mx+b$

Where "m" is the slope and "b" is the y-intercept.

The slope can be found with the following formula:

$m=\frac{y_2-y_1}{x_2-x_1}$

In this case you can say that:

$y_2=-5\\y_1=11\\\\x_2=-1\\x_1=3$

Knowing this values you can substitute them into the formula and then evaluate, in order to find the slope. This is:

$m=\frac{-5-11}{-1-3}\\\\m=\frac{-16}{-4}\\\\m=4$

By definition, the line intersects the y-axis when the value of "x" is 0.

Notice in the table that when $x=0$ , $y=-1$

Therefore, the y-intercept is:

$b=-1$

7 0

4 years ago

Please answer thank u ASAP.

Neko [114]

Answer:

Step-by-step explanation:

7 0

3 years ago