Please help me with this because i don’t understand stand this
2 answers:
Answer:
52 degrees
Step-by-step explanation:
Complementary angles have a sum of 90. This means when added they will equal 90. So to solve had the 2 expressions and set them equal to 90.
This looks like, . Then, isolate the variable and solve.
- Remove the parentheses
2x +18 +6x -8 =90
- Add like terms
8x +10 =90
- Subtract 10 from both sides
8x = 80
- Divide both sides by 8
x=10
Finally, plug 10 in for x in the expression for angle b. This equals 52 degrees.
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Answer: x = 35
Explanation: In this problem, notice that D is being divided by 5,
so to get D by itself, we need to multiply both sides of the equation by 5.
Notice that on the left side, the 5 and 5 cancel
each other out, so we are just left with D.
On the right side, we have (7)(5) which is 35.
So x = 35.
Finally, remember that we can check our answer
by plugging a 35 back into the original equation.
So we have .
Since this is a true statement, we know that our answer is correct, x = 35.
