The number 450 is increased by 75%. The result is then decreased by 90%. What is the final number?
Answers
Answer:
The final number is 78.75
Step-by-step explanation:
we know that
1) The number 450 is increased by 75%
The number 450 represent 100%
Remember that
so
The increased number is
2) The result is then decreased by 90%
In this moment
787.5 represent the 100%
Remember that
The decreased number is
therefore
The final number is 78.75
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Identify the type of sequence shown in the table below and select the appropriate response. N: 1, 2, 3, 4, 5F(n): 12, -36, 108, -324, 972 A) arithmetic sequence; common difference is -48 B) arithmetic sequence; common difference is 144 C) geometric sequence; common ratio is -3 D) geometric sequence; common ratio is 3
David can finish painting the room in 6 hours, and his elder brother Antony can finish it in 4 hours. If both brothers paint the room together, how many hours will it take them?
Answers
Answer:
The smaller number is 24 and the larger number is 50.
Step-by-step explanation:
b>a
b=3a-22, b+2a=98, using b from the left in the right:
3a-22+2a=98
5a-22=98
5a=120
a=24, and since b=3a-22,
b=50
So the smaller number is 24 and the larger number is 50.
Answers
Final answer:
The mean of the numbers 11,-7,-14,10,-5 is found by adding all the numbers together, and then dividing by the number of numbers. In this case, the mean is -1.
Explanation:
To find the mean of the numbers 11,-7,-14,10,-5, you'll want to add all of these numbers together then divide by the amount of numbers there are. This is because the mean is the average value of a set of numbers.
First, add up all your numbers: 11 + -7 + -14 + 10 + -5, which totals to -5. There are 5 numbers in the set, so to find the mean, you then divide -5 by 5, which equals -1. So, the mean of the set of numbers 11, -7, -14, 10, -5 is -1.
Learn more about Mean here:
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Answers
Answers
you multiply the number of things you have and every number lower than it together.
for this one you would do
5*4*3*2*1=120
there are 120 different ways 5 cards can be arranged on a table
Answers
If you decrease it by 10%, then only 90% of it is left.
90% of £40
= 0.9 x £40
= £36 .