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jayzelgaspar8441
13.02.2020 •
Mathematics
What is the value of x?
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x =
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Ответ:
The sum of the angles of a triangle is 180°. So you can do:
91° + (8x + 3)° + (10x - 4)° = 180° To find x, you need to isolate/get the variable "x" by itself in the equation. First combine like terms (terms that have the same variable and power/exponent]
91 + 3 - 4 + 8x + 10x = 180 (I rearranged for the like terms to be next to each other)
90 + 18x = 180 Subtract 90 on both sides
18x = 90 Divide 18 on both sides to get "x" by itself
x = 5
PROOF
91° + (8x + 3)° + (10x - 4)° = 180° Plug in 5 for "x"
91° + (8(5) + 3)° + (10(5) - 4)° = 180°
91° + (40 + 3)° + (50 - 4)° = 180°
91° + 43° + 46° = 180°
180° = 180°
Ответ:
first, make a dot on (0,-1)
Then, you draw a line that is -1/2
The way you draw a line explaination:
for every x, you go down and left by half a box.
for example, the next dot is (-1, -1.5)or (-1, -1/2)
and the next point after that is (-2, -1) and so on...
reminder: it goes on forever on both sides!