The answer is 40 because they're are 4 groups of ten so it would go like 10,20,30,and 40.=)
Answer:

Step-by-step explanation:
Incomplete question:
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<em>See attachment for complete question</em>
Required
Determine the equation to find x
First, is to complete the angles of the triangle (ABC and ACB)
--- angle on a straight line

Collect like terms


--- angles in a triangle

Collect like terms


Apply sine rule

In this case:

This gives:

Explanation:
The expression is given below as

Concept:
We will apply the bsolute rule below

By applying the concept, we will have

Hence,
The final answer is
Answer:
33.61 mm (the square root of 1130)
Step-by-step explanation:
Answer:
95°
Step-by-step explanation:
Angle 1 and 4 are opposite angles, thus equal, so:
3x+10 = 4x-15 =>
x = 25
Angle 1 and 4 are 85°
Angle 4 and angle 6 are called allied (or co-interior) angles, which are supplementary, i.e., angle 6 = 180 - angle 4, so angle 6 = 95°.
Angle 6 and 7 are again opposite, so angle 7 is 95° as well!