Please help ! pick two answers

Help please!! i don’t understand this one!

12345 [234]

Answer:

C, D

Step-by-step explanation:

This equation can be solved any of several ways. One that doesn't require much thought is using the quadratic formula.

For ax² +bx +c = 0, the solutions are ...

$x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}$

In the given equation, a=2, b=11, c=5, so this becomes ...

$x=\dfrac{-11\pm\sqrt{11^2-4\cdot2\cdot5}}{2\cdot2}=\dfrac{-11\pm\sqrt{81}}{4}\\\\x=\dfrac{-11\pm9}{4}=\left\{-\dfrac{20}{4},-\dfrac{2}{4}\right\}=\{-5,-\frac{1}{2}\}$

The solutions are ...

C. x = -5

D. x = -1/2

_____

My personal favorite is using a graphing calculator. The solutions are the x-intercepts of the expression on the left. That is, where its value is zero, as the equation says.

5 0

3 years ago

Which of the following are true of F(x)?

aleksklad [387]

The answer is A the first choice

7 0

3 years ago

Read 2 more answers

The x intercept of the line x=3.5 is?

ladessa [460]

In this problem, the x intercept is 3.5 because the line crosses through the x axis at the point (3.5,0)

4 0

4 years ago

2/5, 1/8<br>a common<br>denominator:

Goshia [24]

Answer:

40

Step-by-step explanation:

5(8)

3 0

3 years ago

subukin mong bigyan ng malalim at mabisang kahulugan Ang gamit Ng wika sa globalisasyon batay sa sarili mong pag unawa?

zubka84 [21]

Answer:

#SORRY I NEED THIS ℅THANK YOU SO MUCH

#SORRY I NEED THIS Download ppt "1 1.Name the two forces that work together to keep the Earth and the moon in orbit with one another. Lesson Essential Question: How do gravity and inertia."℅THANK YOU SO MUCH

#SORRY I NEED THIS ℅THANK YOU SO MUCH

7 0

3 years ago