Answer: The cost of 16 pencils and 10 notebooks is $5.84.
Explanation: You can solve this using linear systems:
Let X be the cost per pencil, and let Y be the cost per notebook.
(1) 7x+8y=4.15
(2) 5x+3y=1.77
Choose a variable to eliminate. I’ll eliminate X first as an example. To eliminate a variable, you must have the same coefficient beside the variable for both equations.
Equation 1 now becomes:
(3) 35x+40y=20.75
Equation 2 now becomes:
(4) 35x+21y=12.39
Now that you have 35 as a coefficient for X in both equations, you can subtract the two equations to officially eliminate it!
(3)-(4)
19y=8.36
y=0.44
Now that you have the value of Y, substitute that value into either one of the equations to get X.
Substitute y=0.44 in (1)
7x+8(0.44)=4.15
7x+3.52=4.15
7x=0.63
x=0.09
Therefore, the cost per pencil is $0.09/pencil and the cost per notebook is $0.44/notebook.
Almost done lol...
To find the cost of 16 pencils, multiply 0.09*16. That gives you $1.44, which will be the cost of 16 pencils.
The cost of 10 notebooks is 0.44*10, which gives you $4.40. That’s the cost of 10 notebooks.
To find the total price, add these values together!
1.44+4.40=5.84
Therefore, the cost of 16 pencils and 10 notebooks is $5.84.
Hope that helps シ
Answer:
3515
Step-by-step explanation:
Data provided in the question:
Dimension of the container = 1.5 m x 18 cm x 28 cm
volume of the container = 150 cm × 18 cm × 28 cm = 75600 cm³
also,
1 L = 1000 cm³
thus,
volume of the container = 
= 75.6 L
Volume of the U.S pint = 0.4732 L
therefore,
Number of pint in the container = 
= 
= 159.76
Also it is given that
Number of Pacific oysters per pint = 10
Number of Atlantic oysters per pint = 32
Thus,
for 159.76 pint
Pacific oysters in container = 10 × 159.76 = 1597.6 ≈ 1598
Atlantic oysters in the container = 32 × 159.76 = 5112.42 ≈ 5113
hence,
order short of your anticipated count = 5113 - 1598 = 3515
Answer:
It is either A. or C.
Step-by-step explanation:
You will need to use the Pythagorean Theorem, actually a derivative of it sometimes called the "distance formula" to find the length of the segments between two points. Mathematically the distance is:
d^2=(x2-x1)^2+(y2-y1)^2
d=√(dx)^2+(dy)^2)
Answer:
2x+7+y=0 -7
2x+y=-7 -2x
y=-2x-7
Step-by-step explanation:
not sure
