Answer:
b
Step-by-step explanation:
Answer:
range: 13, mean: 6
Step-by-step explanation:
You get range by subtracting the largest number (15) by the smallest number (2). 15-2 equals 13.
You get mean by adding up all of the numbers (2+2+3+4+5+5+6+8+10+15=60) and dividing the sum by the amount of numbers in the list (10). 60/10 equals 6.
A) is ok; its slope is the neg. reciprocal of the given slope 4, as is required for
perpendicular lines.
B) not feasible; its slope is +1/4, not the negative reciprocal of 4 (-1/4).
C) OK
D) OK (slope is -1/4)
I. xy + 2y=3 Not linear equation because is grade 2 equation (xy).
II. x-2y = y Are linear equations in two unknowns (x and y).
III. 3x + 2y = 5 Are linear equations in two unknowns (x and y).
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Corect ansver: C) II and III only</h2><h2>
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.
Answer:
Step-by-step explanation:
If I have 90 pounds shared between A, B, and C, then in a mathematical equation,
A + B + C = 90
However, we have way too many unknowns.
We are told that the ratio of A to B is 1 to 2, or
and cross multiplying,
2A = B or
We are also told that the ratio of B to C is 4 to 3, or
and cross multiplying,
3B = 4C or
Now we have everything in terms of B, so we will rewrite it like that:
, and
and
9B = 360 so
B = 40. If B is 40 and A is half of B, then A is 20.