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OverLord2011 [107]
3 years ago
7

Write an equation of a line that has a slope of –5 and a y-intercept of 2.

Mathematics
1 answer:
Bingel [31]3 years ago
4 0

Answer:

y-2 = -5x

5x+y = 2 is the required equation of a line.

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PLS HALP I'm stuck on number 31
Marta_Voda [28]
There are 2 possibilities for where A can be: one where C is 30° (and A is 60°) and another where C is 60° (and A is 30°). Since it's not specified, we can find both.

30°:
drawing the triangle on a graph, you can see that point C is 4 units above point B, so we know that one side of the triangle is 4. Once we find the other "leg" of the triangle (the one that's parallel to the x-axis), we can just add that value to B to find the x coordinate of A.
If angle C is 30°, using the side ratios of a 30-60-90 triangle, that side is "a√3", and the side we're looking for is a. So, to find a, we just divide 4 by √3. In that case, point A is 4/(√3) units to the right of -2√3. We can rationalize 4/(√3) like this:

(4√3)/3

and then add that to 2√3:

(4√3)/3 + -2√3

(4√3)/3 + (-6√3)/3 = (-2√3)/3

We know that the x-coordinate of A is (-2√3)/3, and the y-coordinate is -1 because B is a right angle and we're just moving horizontally. So, if C is 30° and A is 60°, point A is at ((-2√3)/3, -1).

60°:
in this case, the leg we know is "a" and the leg we're looking for is "a√3". So, we can multiply 4 by √3 to get the distance from B:

4 x √3 = 4√3

4√3 + -2√3 = 2√3

So the x-coordinate of A here is 2√3, and the y-coordinate is still -1: (2√3, -1).

hope that helps! if you liked this answer please rate it as brainliest!! thank you!!!

8 0
3 years ago
$700 principal earning 5%, compounded monthly, after 9 years
Romashka [77]
1,096.79
because 
700*(1+.05/12)
8 0
3 years ago
Help please anyoneee
DENIUS [597]

Answer:

here's the answer to your question

5 0
3 years ago
​i am a multiple of 7, i am also a mutiple of 3 my units digit is half my tens digit. Thanks!
givi [52]

Answer:

21 or 42......both work

5 0
3 years ago
PLEASE HELP According to the stem-and-leaf plot above, how many students scored a
Anna71 [15]

Answer:

17

Step-by-step explanation:

Do you even know what a stem-leaf plot is?

The scores lower than 80% are:

70, 70, 71, 78, 62, 62, 63, 68, 69, 69, 57, 57, 58, 49, 49, 30, and 21 percent according to the data given. That is 17 scores less than 80 percent.

8 0
3 years ago
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