£1.60 each notebooks
3 pencils times 21p= 63p
2pens times 37p=74p
3sharpeners times 86p=258p
63p+74p+258p=£3.95
£8-3.95=£4.05
£4.05-£1.60= £2.45
£2.45-£1.60=85p
So… he bought 2 notebooks
Use Pythagoras to get the height, the use it to find x:
26^2-11^2 =555
555^1/2(square root of 555)
=23.55843798 ~you need this number left as it is for a more accurate answer.
Then you do
42^2-23.55...^2(which we know is 555)
Then whatever that equals you square root that
Then you round up the answer to that to get the final answer.
I left the last part so you can do it and do some active learning, if you have more questions on this please feel free to ask, hope this helps
Answer:
The change in total amount of money the cashier are paid each week will be $331.5.
Step-by-step explanation:
16 store cashiers work average 21 hours per week and paid $8.25 per hour.
Now, the store manager hires 2 additional cashiers each cashier will be paid 0.25 more per hour and will work an average of 1.5 fewer hours per week.
Therefore, the two additional cashiers will be paid $8.50 per hour and will work an average of (21 - 1.5) = 19.5 hours per week.
So, the change in the total amount of money the cashiers are paid each week will be (2 × 19.5 × 8.5) = $331.5. (Answer)
4x - 7y = 7
3x - 9y = 7
3(4x - 7y = 7)
12x - 21y = 21
-4(3x - 9y = 7)
-12x + 36y = -28
12x - 21y = 21
-12x + 36y = -28
15y = -7
y = -7/15
4x - 7(-7/15) = 7
4x + 49/15 = 7
4x = 7 - 49/15
4x = 105/15 - 49/15
4x = 56/15
x = (56/15) / (4)
x = (56/15) * (1/4)
x = 56/60 or 14/15
So the solution is x = 14/15 and y = -7/15 or (14/15, -7/15)
Verify solution by plugging in x and y values and solving.