Answer:
D . 0.4
Step-by-step explanation:
let the height be the y coordinate
let the width be the x coordinate
first point :
width/x : 0.5
height/y : 0.8
according to the formula given:
height = constant/width :
so:
0.8 = constant/0.5
constant = 0.4
next point:
x : 0.8
y : 0.5
0.5 = constant/0.8
constant = 0.4
for all of the points, the constant is 0.4
All of the angles would be acute angles because they are less then 90 degrees
Negative means less.
Positive means more.
as a negative # moves farther away from 0, it becomes smaller.
i.e.
-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7
-5 less than 7.
You divide them, so 1,125 divided by 15=25. So your Answer is 75 students are on each bus.
Answer:
14 quarters and 28 nickels
Step-by-step explanation:
System of Equations where x = number of quarters and y = number of nickels
(1) equation with value of each coin
0.25(x)+0.05(y) = 4.90
(2) total number of coins
x + y = 42
Solve system of equations using either substitution or elimination
(elimination multiplying equation 2 by -0.5)
.25(x) + 0.05(y) = 4.90
-0.05(x) - 0.05(y) = 42 * (-0.05)
(3) Resulting equation
.20(x) = 2.8
x = 14
plug x into equation 2
14 + y = 42
y = 28
There are 14 quarters and 28 nickels in Mary's collection.
