Answer:
it is 9
Step-by-step explanation:
you add the 4 and times 3
Answer:
1296 orders
Step-by-step explanation:
There is a pattern to his orders.
First, he starts with 6.
Second, he made 36.
Third, he made 216.
From here, the pattern can be identified. And, you can extend it further.
Pattern - x · 6
x = the orders.
6, 36, 216
6 (September) × 6 = 36 (October)
36 × 6 = 216 (November)
216 × 6 = 1296 (December)
137 because they are 180 angles so you subtract 180-43=137.
Answer:
The scientist needs 80 liters of 25% solution and 40 liters of 10% solution.
Step-by-step explanation:
If x is the liters of 25% solution, and y is the liters of 10% solution, then:
x + y = 120
0.25x + 0.10y = 0.20(120)
Solve the system of equations using substitution or elimination. Using substitution:
0.25x + 0.10(120 − x) = 0.20(120)
0.25x + 12 − 0.10x = 24
0.15x = 12
x = 80
y = 40
The scientist needs 80 liters of 25% solution and 40 liters of 10% solution.
522 dollars X 0.79 euro = 412.38 dollars
________
1 dollar