Answer:
x=18
Step-by-step explanation:
A triangle ALWAYS have overall angles of 180 degrees.
When we look at this triangle, it should come to familiarity that this is a 45 45 90 triangle. This is a special type of isosceles right triangle.
But without knowing this, we can still solve this problem.
Since the triangles' overall angle is 180 and we know 45 and 45 of the two other angles, let's subtract that together to find out the overall angle where we are trying to find x.
180-45-45=90
This means that the expression 4x+18 is equal to 90, since that's the leftover angle amount.
Let's solve that equation now.
4x+18=90 Let's get rid of the 18 by subtracting it on both sides.
-18 -18
4x=72 Isolate the x by dividing both by 4.
x=18
In this problem, x is equal to 18.
Answer:
I think it would be 83.0448 or 83º
Step-by-step explanation:
If X is the opposite of your hypotenuse then you would have to do inverse cos [a^2 +b^2 -c^2 all divided by 2ab]
so you would have the inverse cos of [8^2 +16^2 -17^2 divided by 2(8)(16)] which would give you 83º.
I hope this helped a little bit. Im sorry if it's wrong.
150 minus 30 equals 120 but i did 150/30 and got 5
Answer:
11/24
Step-by-step explanation:
11/7 x 7/24
Answer:
The two parallel sides a and b are 17 cm and 23 cm respectively
Step-by-step explanation:
Area of a trapezium = {(a+b)/2} h
Where
h = height = 18 cm
a = parallel side 1 = x
b = parallel side 2 = x + 6
Area of a trapezium = {(a+b)/2} h
360 = {(x + x + 6) / 2} 18
360 = { (2x + 6) / 2} 18
360 = (2x + 6) 9
360 = 18x + 54
Subtract 54 from both sides
360 - 54 = 18x
306 = 18x
Divide both sides by 18
x = 306 / 18
= 17
x = 17 cm
a = parallel side 1 = x
x = 17 cm
b = parallel side 2 = x + 6
x + 6
= 17 + 6
= 23 cm
