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Veronika [31]
4 years ago
11

How many times does the quadratic function intesect the x axis y=2x^+7x+6

Mathematics
1 answer:
atroni [7]4 years ago
6 0

Answer:

There are two intersections

Step-by-step explanation:

The number of intersections can be found by calculating the delta of the equation

Δ=b²-4ac

if Δ=0, there is 1 intersection

if Δ>0 there are 2 intersections

if Δ=<0, there are no intersections

where the quadratic equation is in the form ax²+bx+c

Δ=7²-4(2)(6)

=1>0

There are two intersections

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Find the length of the second leg of the triangle round to the nearest hundredth
horsena [70]

Answer:

\displaystyle \frac{3\sqrt{230}}{5}

Step-by-step explanation:

Use the Pythagorean Theorem:

\displaystyle a^2 + b^2 = c^2 \\ \\ 9,7^2 + b^2 = 13,3^2; \sqrt{82,8} = \sqrt{b^2} \\ \\ \frac{3\sqrt{230}}{5}\:[or\:9,0994505329...] = b

So, you have this:

\displaystyle 9,1 ≈ b

I am joyous to assist you at any time.

7 0
3 years ago
A store is having a sale on almonds and jelly beans today. The table below shows the amount of each type of food (in pounds) and
Ad libitum [116K]

a. The system of equations are:

3x + 5y = 22

12x + 2y = 25

2. Cost for each pound of almond (x) = $1.5

Cost for each pound of jelly beans (y) = $3.5

<h3>How to Solve a System of Equations?</h3>

From the information given above, we can create the system of equations that will be used in solving the problem as shown below.

a. The system of equations that represents the situation is:

3x + 5y = 22 ----> equation 1

12x + 2y = 25 ----> equation 2

b. Multiply equation 1 by 2, and equation 2 by 5:

6x + 10y = 44 ----> equation 3

60x + 10y = 125 ----> equation 4

Subtract equation 4 from equation 3

-54x = -81

-54x/-54 = -81/-54

x = 1.5

Cost for each pound of almond (x) = $1.5

Substitute x = 1.5 into equation 1

3x + 5y = 22 ----> equation 1

3(1.5) + 5y = 22

4.5 + 5y = 22

5y = 22 - 4.5

5y = 17.5

5y/5 = 17.5/5

y = 3.5

Cost for each pound of jelly beans (y) = $3.5

Learn more about the system of equations on:

brainly.com/question/13729904

#SPJ1

3 0
1 year ago
How many miles does it take to make the same amount as one third
NISA [10]
3/6 is the answer according to my math
5 0
3 years ago
ASAP HELPPPPPP<br><br> Increase 100kg by 12.5%
victus00 [196]
122.5 kg is the answer you’re looking for.
4 0
3 years ago
Determine the perimeter of the triangle to the nearest whole unit .
Monica [59]

Answer:

14

Step-by-step explanation:

To find the perimeter, you need to add the lengths of each side.

In order to find the length of each side, imagine each side of the given triangle is the hypotenuse of an imaginary triage and use the Pythagorean Theorem (a² + b² = c²).

For the top side, I see an imaginary triangle with one side of 3 and the other side of 1. This means the length of the top of the given triange is √10:

3² + 1² = c²

9 + 1 = c²

10 = c²

√10 = c

For the left side, my imaginary triangle has one side of 5 and the other is 1. The length of this side is √26:

5² + 1² = c²

25 + 1 = c²

26 = c²

√26 = c

For the right side, I see a triange with two sides of 4 and the hypotenuse is √32.

This means the triangle in our question has side of √10, √26, and √32

If I add all of these up on a calculator, I get 13.918 which rounds up to 14 because the question wants the nearest whole unit.

8 0
3 years ago
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