Answer:
12 m
Step-by-step explanation:
Correct option is:
B. 2
<h2>
Explanation:</h2>
From the double number line shown we can set:
So we can solve this problem by using either equation (3) or (4). So, choosing equation (3):
<h2>Learn more:</h2>
Solving equations: brainly.com/question/7747308
#LearnWithBrainly
If u multiply the first equation by -4, u get -2x - y = -20
and when u add the 2 equations..
-2x - y = -20
2x + 3/8y = 5
-----------------
0 - 5/8y = -15.....u notice that the x terms r eliminated.
The angle m∠ABC is 70 degrees.
<h3>How to find angle in a rhombus?</h3>
The angle in a rhombus can be found as follows;
The opposite angle of a rhombus are congruent.
Therefore,
∠B = 140 degrees
Hence, the diagonal of a rhombus bisect an angle.
Therefore,
m∠ABC = 140 / 2
m∠ABC = 70 degrees.
learn more on rhombus here: brainly.com/question/11966028
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Answer:
171.65
Step-by-step explanation:
A=2AB+(a+b+c)h
AB=s(s﹣a)(s﹣b)(s﹣c)
s=a+b+c
2
Solving forA
A=ah+bh+ch+1
2﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4=5·10+5·10+5·10+1
2·﹣54+2·(5·5)2+2·(5·5)2﹣54+2·(5·5)2﹣54≈171.65064
