Answer:
12
Step-by-step explanation:
4x+12+10x=180
14x+12=180
14x=168
x=12
Answer:
129
Step-by-step explanation:
Each day, Monica measures the amount of change in the number of bacteria and this number from each day gives a geometric series
3, -6, 12, -24, ...... having first term 3 and the common ratio -2.
Then the sum of the amount of change in the bacteria after the seventh day will be ( 3 - 6 + 12 - 24 + 48 - 96 + 192) = 129 (Answer)
Answer:
9/4
Step-by-step explanation:
5×|-2-7(3)|-2×17
5×|-2-21|-34
5×|-23|-34
5×23-34
115-34=81
22+sq rt(7×28) 28=4×7 sq rt= 2×2×7×7
22+2×7=22+14=36
81÷9/36÷9=9/4
Let's see, if the first one has a Principal of $50, when it doubles the accumulated amount will then be $100,
recall your logarithm rules for an exponential,
now, for the second amount, if the Principal is 500, the accumulated amount is 1000 when doubled,
now, for the last, Principal is 1700, amount is then 3400,