Find four numbers proportional to the numbers 2, 4, 5, and 6 if the difference between the sum of the two last numbers and the s um of the first two numbers is equal to 4.8.
2 answers:
Number 1 wants you to set up proportions so four numbers equal to 2/1 would be: 6/3 8/4 10/5 12/6, and so on. I'm not sure what they're asking when they say the sum of the first two numbers is equal to 4.8
Answer:
The numbers are 1.92
, 3.84
, 4.80
, and 5.76
.
Step-by-step explanation:
Let the numbers be represented by 2x, 4x, 5x, and 6x. Then the given condition says
(6x+5x)-(4x+2x) = 4.8
11x-6x=4.8
5x=4.8
x=.96
Then the numbers are
2x = 1.92
4x = 3.84
5x = 4.80
6x = 5.76
Hope this helps!
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x = 11
Step-by-step explanation:
Given the expression;
5x+2y=67 ...1
x=3y−7 ....2
Substitute 2 into 1
5(3y-7)+2y = 67
15y - 35 + 2y = 67
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17y = 102
y = 102/17
y =6
Recall that x = 3y - 7
x = 3(6) - 7
x = 18 - 7
x = 11
Hence the value of x is 11
