Answer:
n + q = 20
5n + 25q = 300 or 0.05n + 0.25q = 3
Step-by-step explanation:
You know that you have some nickels and some quarters, and together there are 20 coins. So if n represents the number of nickels, and q represents the number of quarters, you can use this equation:
n + q = 20
You also know that together the coins total three dollars. We know that a nickel is worth 5 cents and a quarter is worth 25. So if n and q still represent the number of each type of coin, we can use this equation:
5n + 25q = 300
or
0.05n + 0.25q = 3
The reason I said 300 in the first equation is because you are counting the number of cents. There are 300 cents in 3 dollars.
Answer:
Step-by-step explanation:
Transversal or Corresponding angles
x=5
Answer:
The population size is 55.9597 (≅ 56)
Step-by-step explanation:
Since the population of protozoa develops at a constant growth rate of 0.4416 per member per day.
Then;
Day 0 = 3
Day 1 = 3 + (3 x 0.4416) = 4.3248
Day 2 = 4.3248 + (4.3248 x 0.4416) = 6.2346
Day 3 = 6.2346 + (6.2346 x 0.4416) = 8.9878
Day 4 = 8.9878 + (8.9878 x 0.4416) = 12.9568
Day 5 = 12.9568 + (12.9568 x 0.4416) = 18.6785
Day 6 = 18.6785 + (18.6785 x 0.4416) = 26.9269
Day 7 = 26.9269 + (26.9269 x 0.4416) = 38.8178
Day 8 = 38.8178 + (38.8178 x 0.4416) = 55.9597
After eight days, the population size would be 55.9597 (≅ 56).
Isolate the variable "r". Add 2r to both sides, while subtracting 16 from both sides. You will be left with -20=5r. Then you need to divide 5 from both sides. Your answer will be -4=r.