Answer:
840
Step-by-step explanation:
if it can hold 70 in 20 minutes it can hold 210 in 1 hour and 4x210 equals 840
Answer:
D) 9
Step-by-step explanation:
These angles are equal to each other because they’re alternate interior angles so:
9x + 8 = 15x - 46
9x - 15x = -46 - 8
-6x = -54
x = 9
Answer:

Step-by-step explanation:

substitute (1) to (2):
add x to both sides

subtract 5 from both sides


substitute the values of x to (2):

2x^2+9x-6 i found this by subtracting 3x^2+7x from the other equation