tgdetwiler2905
27.07.2019 •
Mathematics
If 3x + 8 = 5x - 6, then what is the value of 10x?
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Ответ:
3x + 8 - 5x = 5x - 6 - 5x
-2x + 8 = -6
-2x + 8 - 8 = -6 - 8
-2x = -14
-2x/-2 = -14/-2
x = 7
10x
10 (7)
70
The value of 10x is 70. The value of x is 7.
Ответ:
22.62°
Step-by-step explanation:
Looking at the attached diagram, it is a right angled triangle. If we are to solve for the measure of angle x , we would be using the Trigonometric function of cosine
The formula is given as
cos x = Adjacent/ Hypothenuse
Adjacent = 12
Hypothenuse = 13
Therefore,
cos x° = 12/13
x° = cos -¹ (12/13) or arccos (12/13)
x° = 22.619864948°
Therefore, the measure of x to the nearest hundredth = 22.62°