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kaheart [24]
3 years ago
5

-x²-8x-16=0 what is the solutions by solving by quadratic equations ​

Mathematics
1 answer:
Alika [10]3 years ago
6 0

Answer:

x = - 4

Step-by-step explanation:

Given

- x² - 8x - 16 = 0 ( multiply through by - 1 to clear the leading negative )

x² + 8x + 16 = 0 ← this is a perfect square

(x + 4)² = 0 ( take the square root of both sides )

x + 4 = 0 ( subtract 4 from both sides )

x = - 4

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Y=2x+1
yan [13]

Answer:

(1) 2 (2) (-1/2,0) (3) (0,1)

Step-by-step explanation:

The slope of the line is the number times x. This equation is y=mx+b, where m is the slope and b is the y-intercept. In this case, m is 2, so we have our slope. The y-intercept is easy, as we already know it to be (0,1). The x-intercept is the point where the line hits x when y=0. To solve for the x-intercept, we set y to 0 and solve. We have 0=2x+1. First, we subtract 1 from both sides and get -1=2x. Next, to get x by itself, divide both sides by 2. Now we have -1/2=x. Now we have our x coordinate for our x-intercept. Because of this, we get (-1/2,0) as our x-intercept.

3 0
3 years ago
Molly recives 20 mins of homework every night.Her brother says that he gets 10 times as much homework than her and he is in high
mina [271]
I would believe him. it comes down to about 3 hours and some change. i’m in high school and its a reasonable amount.
8 0
3 years ago
Here are the graphs of L(x) and R(x) what are the values of L(2) and R(2)
Sedaia [141]

Using the function graph given, it is found that:

  • L(2) = 7.
  • R(2) = 1.

When a piece-wise function is given, that is, a function that has <em>multiple definitions</em>, the numeric value at x when the definition changes is given by the closed circle.

  • For function L(x), when x = 2, the closed circle is at y = 7, hence, L(2) = 7.
  • For function R(x), when x = 2, the closed circle is at y = 1, hence, R(2) = 1.

To learn more about the use of graphs to analyze a function, you can take a look at brainly.com/question/21447009

3 0
2 years ago
Write the prime factorization of the number 264
Xelga [282]
264
132 * 2
66 * 2 * 2
33 * 2 * 2 * 2
11 * 3 * 2 * 2 * 2 <== or can also be written as 11 * 3 * 2^3
4 0
3 years ago
What number is 10 times bigger than 30​
svlad2 [7]

Answer:

300

Step-by-step explanation:

10 x 30= 300

3 0
3 years ago
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