Answer:
a equals 105°
Step-by-step explanation:
angles in a straight line add up to 180°
a+75=180
a=180-75
a=105°
To find the decreased percentage,here's what we can do:

In this case,the eqaution would be:

Hope it helps!
Step-by-step explanation:
4x + 2xy=
4×4 + 2×4×-3
= 16 + (-24)
= - 8
All to one side:
4x^2-32x+64 = 0,
divide by 4:
x^2 -8x + 16 = 0
apply formula or see that it is (x-4)^2!, so only x =4 is a root and it is double.
Answer:
Step-by-step explanation:
as a % = 3/1000 × 100 = 3/10 = 0.3 %
as a decimal = 3/1000 = 0.003
hope this hepls
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