After 18 minutes there will be 486 gallons of water drained.
The expressions x2 - 14x + 49 and (x - 7)2 are equivalent.
(x + a)^2 = (x + a)(x + a) = x^2 + 2ax + a^2
In this case 2a = -14 so a= -7 and a^2 = 49
Answer:
x=-4
Step-by-step explanation:
4x/3-8/3=2x
4x-8=6x
2x=-8
x=-4
9514 1404 393
Answer:
m∠1 +m∠8 = 90°
Step-by-step explanation:
There is no necessary sum relation between angles 3 and 5 or angles 7 and 10. The only thing you can say about those angle pairs is ...
∠3 + 90° = ∠5
∠10 +90° = ∠7
Angles 8 and 9 are congruent, so don't have any necessary sum.
Angle 1 is congruent with angle 3, which is complementary to angle 8, so we must have ...
m∠1 +m∠8 = 90°
Answer:
angles 3&7
Step-by-step explanation:
