The Phillips family and the Peterson family each used their sprinklers last summer.The water output rate for the Phillips family's sprinkler was 35 L per hour.The water output rate for the Peterson family's sprinkler was 15 L per hour.The families used their sprinklers for a combined total of 35 hours, resulting in a total water output of 925 L.How long was each sprinkler used?
Answers
Answer:The Phillips family used their sprinklers for 20 hours while The Petersons family used their sprinklers for 15 hours.
Step-by-step explanation:
Let x = the number of times that the Phillips family used their sprinkler last summer.
Let y = the number of times that the Petersons family used their sprinkler last summer.
The water output rate for the Phillips family sprinkler was 35 L per hour.
This means that the total volume of water from their sprinkler is 35xL
The water output rate for the Petersons family sprinkler was 15 L per hour.
This means that the total volume of water from their sprinkler is 15yL
The families used their sprinklers for a combined total of 35 hours, resulting in a total water output of 925 L. This means
x + y = 35
35x + 15y = 925 - - - - - - - - 2
Substituting x = 35 - y into equation 2
35(35-y) + 15y = 925
1225 - 35y + 15y = 925
- 20y = 925 - 1225 =- 300
y = - 300 / -20 = 15
x = 35 - y = 35 - 15 = 20
The Phillips family used their sprinklers for 20 hours while The Petersons family used their sprinklers for 15 hours.
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Answers
3/10 = n/50
n = 3/10 * 50
n = 3 * 5
n = 15
The correct result would be n = 15.
Answers
Answer:
As shown in picture, this is an isosceles right triangle ( A = 90 deg, B = C = 45 deg). => Except hypotenuse, side1 = side2, or x =
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:)
Answers
I am sure that it is y=4x because when you multiply 4 to the -2 it becomes -8...
and then you plug in the 32 into the y:
32=4x
then divide 4 from the both sides for the value of x.
x=8
y = 32 when x = 8
2299 mm2
B.
2954.5 mm2
C.
3173 mm2
D.
498,180 mm2
Answers
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so To find the surface area, first multiply the length by the width to find the area. Since a cube is made up of six perfect squares, multiply the are aby six. That each measure four. Plug four into the formula to find the surface area
So the formula would be SA=2(LW+LH+WH
so area a^2+4=98^
So it is C
h
prism so 3 pairs of congruent sides thtat are oposite of each other
areas of each are
LW, WH, LH
(L=legnth,W=width,H=height and LW means L times W)
come in pairs
SA=2LW+2WH+2LH
undsitribue for ease
SA=2(LW+WH+LH)
L=4
W=3
H=5
sub
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SA=2(47)
SA=94 cm^2
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Answers
Answer:
Option A.
Step-by-step explanation:
The question asked for a unit rate. This means that there should be no denominator higher than 1. Option A is the only one which have a denominator of 1.
Answers
Answer:
None or all of it and he the refilled but it's probably none
Step-by-step explanation:
Because his final product is the same as his starting point