30-(increase/0.5)*2=sold
i*s=revenue
i*30-(i^2/0.5)*2=r
I=7.5=>r=0
i=7=>r=14
7/0.5=15 number of increases in the cost
Answer:
the way to work these types of problems is to create a table. The table will have three rows and three columns.
The table:
Let x represent the kilograms of nuts, then 138 - x will represent the kilograms of bolts.
Product Amount Cost Total
--------------------------------------------------------
Nuts x .60 .60 * x
Bolts 138 - x .66 .66 * (138 - x)
Mix 138 .65 .65 * (138)
Step-by-step explanation:
The equation:
The nuts plus the bolts must equal the mix or:
.60 * x + .66 * (138 - x) = .65 * 138
I do not like to work with decimals, so multiply each term by 100:
60 * x + 66 * (138 - x) = 65 * 138
Remove the parenthesis and combine like terms:
-6x = -66 * 138 + 65 * 138
-6x = -138
Divide both sides by -6:
x = 23
Solution:
The mixture contains 23 kilograms of nuts.
The mixture contains 138 - 23, or 115 kilograms of bolts.
Answer:
This equation belongs to One variable linear equation because there is one variable = x and the exponent number is one
solving equations :
x= 44 quarts
Answer:
21.6 liters
Step-by-step explanation:
40 drops make up a volume of 10 mL
Therefore, the volume of 1 drop of water = 10mL/40 = 1/4 mL= 0.25mL
Since the tap loses 1 drop of water in 1 sec, it loses 0.25mL of water in 1 second
60 seconds make up 1 second so volume of water lost in 1 minute = 0.25 x 60 = 15 mL
60 minutes make up 1 hour so volume of water lost in 1 hour = 15 x 60 = 900 mL
24 hours make up a day so volume of water lost in 1 day = 900 x 24 = 21,600 mL
Since 1000 mL make up 1 liter, divide by 1000 to get volume in liters
Volume of water lost in 1 day = 21600/1000 = 21.6 liters
Can be done as one equation
V lost in one day = 0.25 x 3600 x 24 mL = 21600 mL = 21.6 L
