2y+20=100
2y=80
y=40
The explanation for this would because because the two base angles of an isosceles triangle are equal so since the both equal to 40 degrees, in total would be 80 degrees.
Since the total degrees of a triangle is 180 and you know the base angles make up for 80 percent you subtract that from the total of the angle your trying to find, which is 2y+20.
Answer:
Step-by-step explanation:
uhh
3a plus 7. you group the whole numbers together and than the a's. so 3+4 is 7. 2a + a is 3a.
Answer:
15
Step-by-step explanation:
yes it is subtracting by 75-35 then we got the answer who got A in the science only
10,20,30,40,50,60,70,80,90,100….etc
