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Tcecarenko [31]
3 years ago
9

Someone help me please

Mathematics
1 answer:
lyudmila [28]3 years ago
6 0
50% = 1/2
3^2 > 2^3
-
0.5 > 0.5
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Hi there please explain how to solve or factorise this as i dont know the formula plus how to do ?:)
nalin [4]

Steps:

  1. Writing down the equation. x^2 + 1 = 0.
  2. Subtract 1 from both sides. x^2 = -1
  3. Square root (I am going to use the abbreviation sqrt) on both sides. x = sqrt (-1)
  4. sqrt (-1) is simplified as i (or imaginary number). Because of the sqrt, it would be plus or minus.
  5. (x+i)(x-i) is your answer. If you are in a lower math class (mentioning 10th grade or below), you should just put no solution.
5 0
3 years ago
Read 2 more answers
Find conditions on the slope of a line through (9, 4) such that the x-intercept is negative and the slope is greater than its y-
Vilka [71]

Answer:

9/5 < m < 9/4

Step-by-step explanation:

The conditions are:

  • The line passes through (9,4)
  • x-intercept is negative
  • The slope (m) is greater than its y-intercept

If we take a point like (-1,0)

Slope (m) = change in y ÷ change in x = \frac{0 - 9}{-1 - 4}  = \frac{-9}{-5} = 9/5

This point satisfies the conditions above since;

  1. The line passes through points (9,0) and (-1,0)
  2. The x-intercept is negative i.e -1
  3. The y-intercept is 0 and the slope which equals 9/5 is greater than 0

From the choices given;

we can say that:

m > 9/5 and m < 9/4

And can be expressed as;

9/5 < m < 9/4

8 0
3 years ago
This table gives a few (x, y) pairs of a line in the coordinate plane.
katrin2010 [14]

Answer:

The x-intercept is : (22, 0)

Step-by-step explanation:

From the table values, we determine that it is a straight line as there is a constant change in x and y values.

i.e.

Any previous value of y can be obtained by subtracting 15 from the successor y value.

i.e.

60 - 15 = 45

45 - 15 = 30

so if continue, we can also determine some of the other values of y such as

30 - 15 = 15

15 - 15 = 0

Also, there is a constant change in x values. so, any previous value of x is obtained by subtracting 13 from the successor x value.

i.e.

74-13 = 61

61-13 = 48

48-13=35

35-13=22

So, from the above analysis, we determine that when the value of y = 0, the value of x = 22.

We also know that the x-intercept is the point where the line crosses the x-axis. At this point y = 0.

so, at y = 0, the value of x = 22.

Therefore, the x-intercept is : (22, 0)

5 0
3 years ago
What is the length of HG. <br> What is the length of HF.
mrs_skeptik [129]

Answer:

Since this is a 30°-60°-90° triangle, HG would equal 2 times FG, or 6, and HF would equal 3\sqrt{3}.

4 0
2 years ago
PLZ HELP I will give brainliest :)))
iren [92.7K]

Answer:

The answer should be A.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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