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Lapatulllka [165]
4 years ago
7

What are the solutions of 2x2 + 3x = −5? (6 points)

Mathematics
2 answers:
Gnoma [55]4 years ago
8 0
4/3? I am not sure though idk sorry for not being much help i am not great at math.
alina1380 [7]4 years ago
6 0
2x^2+3x+5=0
x=-3√9-4(4)(2)/4


-3+i√31/4
-3-i√31/4
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What's 5/6 divided by 2
natali 33 [55]
5/6÷2/1
=5/6×1/2
=5/12 i hope this helps
7 0
3 years ago
What is the slope of a line parallel to line Y= 3x +2
masya89 [10]

It is already Parraell.

5 0
3 years ago
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A banner has a length of 10 feet and an area of 7 square feet. What is the width of the banner?
const2013 [10]

Answer:

the width is 0.7 feet

Step-by-step explanation:

Well we know that area = length * width. We know both the area and length, but not the width. Let's substitute the area and length in this equation, and substitute x for the width.

 

7 = 10 * x, or 7 = 10x

 

Now, solve for the width, or x, by dividing both sides by 10.

 

7(/10) = 10x(/10)

 

7/10 = x

 

Simplify 7/10 = 0.7

So the width of the banner is is 0.7 ft!

6 0
4 years ago
A bottle rocket is shot off a bridge into the stream below. The height of the rocket (in feet) above
nalin [4]

The correct model of the height of rocket above water is;

h(t) = -16t² + 96t + 112

Answer:

time to reach max height = 3 seconds

h_max = 256 ft

Time to hit the water = 7 seconds

Step-by-step explanation:

We are given height of water above rocket;

h(t) = -16t² + 96t + 112

From labeling quadratic equations, we know that from the equation given, we have;

a = -16 and b = 96 and c = 112

To find the time to reach maximum height, we will use the vertex formula which is; -b/2a

t_max = -96/(2 × -16)

t_max = 3 seconds

Thus, maximum height will be at t = 3 secs

Thus;

h_max = h(3) = -16(3)² + 96(3) + 112

h_max = -144 + 288 + 112

h_max = 256 ft

Time for it to hit the water means that height is zero.

Thus;

-16t² + 96t + 112 = 0

From online quadratic formula, we have;

t = 7 seconds

7 0
3 years ago
Solve the equation<br> -2 + 2/3X = 10
Delicious77 [7]

Answer:

19.5

Step-by-step explanation:

add 2 to both sides...that makes 2/3X=12...then divide by 2/3 on both sides

6 0
4 years ago
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