Since ABC is a 90-60-30 triangle, it is half of an equilateral triangle. This means that BC is half AC, i.e. 17.
So, we have
So, the perimeter is
3x-5y=n
3x-5y=1
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Answer:
the answer is (-4, 5)
Step-by-step explanation:
Let's use elimination by addition / subtraction:
-6x - 2y = 14
6x + 7y = 11
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5y = 25, so y = 5.
Substituting 5 for y in the 2nd equation, we get:
6x + 7(5) = 11, or:
6x + 35 = 11, or
6x = -24, or x = -4.
Thus, the answer is (-4, 5). Please double check to ensure you have copied down both system of equations and answer correctly.
Check: Is (-4, 5) a solution to this system?
Subst. -4 for x and 5 for y in the first equation:
-3(-4) - (5) = 7
12 - 5 = 7 YES
Answer:
40 - 147x - 216
Step-by-step explanation:
(5x - 24) (8x + 9)
First start with multiplying 5x to 8x and 9
40 +45x
then multiply -24 by 8x and 9
-192 x -216
40 +45x
-192 x -216
+
________________
40 - 147x - 216
Answer:
First option
Step-by-step explanation:
√31 = 5.56....
√26 = 5.09....
So m is less than k but greater than 5.
k is greater than k but less than 6.
So the first option is more logical