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Sever21 [200]
2 years ago
15

Uh hey I need help on this

Mathematics
1 answer:
Ksivusya [100]2 years ago
8 0

Answer:

exactly one solution

I would appreciate if my answer is chosen as a brainliest answer

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Will mark brainliest if right and you show your work!
Anna007 [38]

Answer:

(x - 5)(x + 8)

Step-by-step explanation:

Your equation is: x² + 3x - 40

1. Factor the quadratic

(a) Find two numbers that multiply to give -40 and add to give 3.

List the positive factors of 40: 1, 2, 4, 5, 8, 10, 20, 40

One of the numbers must be negative. Start with the numbers near the middle of the list.

By trial and error, you will find that +8 and -5 work:

-5 × 8 = -40 and -5+8 = 3

(b) Rewrite 3x as -5x + 8x

x² - 5x + 8x - 40

(c) Factor the first two and the last two terms

x(x - 5) + 8(x - 5)

(d) Separate the common factor

x² + 3x - 40  = (x - 5)(x + 8)

2. Using Desmos

You can plot the equation with Desmos.

You get a parabola with x-intercepts at x = -8 and x = 5.

These are the solutions to

x + 8 =0 and x - 5 = 0, so

x² + 3x - 40 =  (x+ 8)(x - 5)

6 0
3 years ago
Square root of 8 times square root of 32
fredd [130]

in decimal form it is 45.2

in exact form it is 32 squareroot 2

5 0
3 years ago
This tree diagram shows the possible outcomes for tossing a nickel and tossing a penny. What is the probability of both coins la
Elanso [62]

Answer:

The possibility is 1/4, with 1 representing both coins tails up, and the 4 representing all the outcomes possible.

Step-by-step explanation:


8 0
3 years ago
Read 2 more answers
Need helpp fastt plss will give brainliest to who is correct plss helpp
harina [27]

Answer:

Percent means per- amount

And the second one is dividing.

Step-by-step explanation:

5 0
3 years ago
Use the drawing tool(s) to form the correct answer on the provided graph.
AlekseyPX

The solutions to the system of equations are (-2,-6) and (4,6)

<h3>How to determine the system of equations?</h3>

We have:

-2x + y = -2

y = -\frac12x^2 + 3x + 2

Next, we plot the graph of both functions.

From the attached graph, the equations intersect at (-2,-6) and (4,6)

Hence, the solutions to the system of equations are (-2,-6) and (4,6)

Read more about system of equations at:

brainly.com/question/21405634

#SPJ1

5 0
2 years ago
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