Answer:
£1.80/kg
Step-by-step explanation:
The total spent on apples and pears is £12.70, and this is the sum of the costs of the apples and the pears respectively:
£12.70 = (unit cost of apples)(2 kg) + (unit cost of pears)(7 kg), or
£12.70 = (unit cost of apples)(2 kg) + (£1.30/kg)(7 kg).
Solving for (unit cost of apples)(2 kg), we get £12.70 - (£1.30/kg)(7 kg), or:
(unit cost of apples)(2 kg) = £12.70 - £9.1 = £3.60
Solving for (unit cost of apples), we divide both sides by (2 kg), obtaining:
£3.60
(unit cost of apples) = ---------- = £1.80/kg
2 kg
Answer:
B
Step-by-step explanation:
fourth term
A(4)= 7 - ( 4-1)(-3)
=-2
seventh term
A(7)= 7 - (7-1)(-3)
=-11
tenth term
A(10) = 7 - (10-1)(-3)
= -20
Answer:
y=4x+27
Step-by-step explanation:
If a line is parallel, it would have the same slope, so you already have that.
Now, you need the y-intercept of the second line. You already have one point, so use that point and the slope to find the y-int. What you can do (since you know you have to go up 4 and over 1, add a 1 to the -5 until you get to zero. your y-int would be 7+20 since you've gone up 5x4)
your final answer (i think) should be y=4x+27, but I could be wrong :))
Answer:
C. I,II,III
Step-by-step explanation:
Absolute value is the distance of a number from 0 on a number line. 6 is 6 units from 0, therefore this option is correct. -6 is 5 units to the left of 0, but it is still 6 units away, therefore this option is correct. 6 is 6 units away from 0, therefore, III is correct. But 0 is 0 units away from 0, therefore this option is incorrect.
Answer:
Step-by-step explanation:
to do these types of problems, we must compare the slopes and the y int's
in y = mx + b form, the slope will be in the m position and the y int will be in the b position.
y = mx + b
y = -5x - 1......slope here is -5 and y int is -1
y = -5x + 7....slope here is -5 and y int is 7
learn these....it really helps
if the slopes are the same, but the y int different, there is no solution because ur lines are parallel
if the slopes are different and the y int are different, then there will be one solution
if the slopes are the same and the y int are the same, there is infinite solutions because u have the same line.
so the answer to this problem is : NO SOLUTIONS...ur lines are parallel and never cross
