Answer:
x = 40°
Step-by-step explanation:
Given that ∠SRT ≅ ∠STR
Then ∠STR = 20
∠STR and ∠STU are what you call supplementary angles. This means that the sum of their measurements is equal to 180° because they form a straight line.
So if:
∠STR + ∠STU = 180°
m∠STU = 4x
m∠STR = 20
Then:
4x + 20° = 180°
Now we solve for x:

x = 40°
Answer:
if im right its number 4!! if its not right sorry i did the math and thats what i got!!
Answer: a^3 - b^3
Step-by-step explanation:
Answer:
<h2>y = 8</h2>
Step-by-step explanation:




1) the square root of 64=8
2) The square root of a^4=a^2
3) b^5=b√b
so the first amount simplifies to 8a²b²√b
4) ∛64=4, as 4×4×4=64
5) ∛a^5=a√a²
6)∛b^4=b√b
so...the second amount is equal to 4ab∛a²b
The last one should be correct
Hope this helped :)