Answer: division model
Step-by-step explanation:
Since we have been given that the number of students that are playing tag at recess = 36 and, it is 6 times as those that are playing hopscotch.
The Division model shows this compat. Let number of students playing hopscotch be y. From the question,
y = 36/6 = 6
Therefore, the division model shows this comparison.
Answer:
1/ N = 1 / 5 + 1/ 4 - 1/ 3 + 1/12
taking L.C.M
Then,
or, 1/N = 5 + 6 / 20 - 13+ 4 / 12
or, 1/N = 11/ 20 - 7/12
or, 1/N = 14 - 12 / 60
or, 1/N = 2 / 60
NOW,
Do cross multiplication,
60 = 2N
or, 60 / 2 = N
so, N = 30
ANS
Answer:
value of x = -4
Step-by-step explanation:
here's the solution : -
=》3x - 4 = 2x - 8
=》3x - 2x = -8 + 4
=》x = -4
Answer:
$65m + 125 = 1165
Step-by-step explanation:
Answer:
192 pounds of $2.5 brand
288 pounds of $2.8 brand
Step-by-step explanation:
From the information we can write an expression that relates the two brands the total pounds of coffee the grocer wants to see. Let x be pounds of the coffee brand 1 and y be pounds of the coffee brand 2.Equation 1:
![480=x+y](https://tex.z-dn.net/?f=480%3Dx%2By)
We know that the price of will be equation 2:
![480*2.68=2.5*x+2.8*y](https://tex.z-dn.net/?f=480%2A2.68%3D2.5%2Ax%2B2.8%2Ay)
Two equations and two unknowns we can solve for x and y:
![x=480-y](https://tex.z-dn.net/?f=x%3D480-y)
Substitute into the second equation:
![480*2.68=2.5*(480-y)+2.8*y](https://tex.z-dn.net/?f=480%2A2.68%3D2.5%2A%28480-y%29%2B2.8%2Ay)
![1286.4=1200-2.5*y+2.8*y](https://tex.z-dn.net/?f=1286.4%3D1200-2.5%2Ay%2B2.8%2Ay)
![y=86.4/0.3=288](https://tex.z-dn.net/?f=y%3D86.4%2F0.3%3D288)
Therefore he uses 288 pounds of brand two at $2.80 and 480-288=192 pounds of brand 1 at $2.50