If the average(arithmetic mean) of three numbers x,y,z is 50. What is the average of there numbers (3x +10), (3y +10), (3z+10) ?
Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):
Showing 0 comments:
Be the first to comment!
To solve this example are needed these knowledge from mathematics:
Next similar examples:
- Harmonic and arithmetic means
The local Utah Department of Child Service office wants to project staffing needs based on current social worker assignments. They have the number of cases per social worker for the following staff: Mary: 25 John: 35 Ted: 15 Lisa: 45 Anna: 20 Calculat
Write the first 7 members of an arithmetic sequence: a1=-3, d=6.
- Sequence 2
Write the first 5 members of an arithmetic sequence a11=-14, d=-1
Write the first 6 members of these sequence: a1 = 5 a2 = 7 an+2 = an+1 +2 an
- AP - simple
Determine the first nine elements of sequence if a10 = -1 and d = 4
if the mean of the set of data 5, 17, 19, 14, 15, 17, 7, 11, 16, 19, 5, 5, 10, 8, 13, 14, 4, 2, 17, 11, x is -91.74, what is the value of x?
- Centre of mass
The vertices of triangle ABC are from the line p distances 3 cm, 4 cm and 8 cm. Calculate distance from the center of gravity of the triangle to line p.
- Theorem prove
We want to prove the sentense: If the natural number n is divisible by six, then n is divisible by three. From what assumption we started?
- PIN - codes
How many five-digit PIN - code can we create using the even numbers?
The village markets have 5 kinds of sweets, one weighs 31 grams. How many different ways a customer can buy 1.519 kg sweets.
How many ways can divide 16 players into two teams of 8 member?
The class is 21 students. How many ways can choose two to examination?
How many 4-tones chords (chord = at the same time sounding different tones) is possible to play within 7 tones?
It is true that the lines that do not intersect are parallel?
- Elimination method
Solve system of linear equations by elimination method: 5/2x + 3/5y= 4/15 1/2x + 2/5y= 2/15
- Reference angle
Find the reference angle of each angle:
Is true equality? ?