chaycebell6662
06.05.2020 •
Mathematics
Help me please, again :)
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Ответ:
15
Step-by-step explanation:
When two lines intersect the sum of the angles on one side of the line will be equal to 180. This means that you can add the two values and get 180.
Add the values you have and solve for x.
6x + 3 + 87 = 180
6x + 90 = 180
6x = 90
x = 15
Ответ:
3 3/4 * a + 3 + 6 = 87
15/4 * a = 87 - 3 - 6
15/4 * a = 78 /*4/15
a = 78 * 4/15
a = 104/5
a = 20.8
The correct result is 20.8.