Saying that multiple choice questions are m, the equation is:
18m+19=15m+31
subtract 19 from both sides to get:
18m=15m+12
subtract 15m from both sides to get:
3m=12
divide by three to get the answer:
m=4
Each multiple choice question is worth 4 points
Answer:
21
Step-by-step explanation:
BDE and BAC are similar figures
BD/BA = BE/BC
18/(18+36) = a/(a+42)
18/54 = a/(a+42)
1/3 = a/(a+42)
a+42 = 3a
42 = 2a
a = 42/2
a = 21
It should be 23.625 dollars
w=3z+2 is the answer. Input the z values into the equation to figure out w.
Answer:
2.35 yards/second or 7.07 ft/second
Step-by-step explanation:
The distance to be covered is 55 yards.
The casting cools at the rate of and the temperature must not be allowed to cool more than .
We know that,
By the time, the temperature reaches , it will take about,
, so it will take about 23.33 seconds.
Also, 55 yards =
So the minimum speed that conveyor must move is,
Hence, the speed of conveyor is 7.07 feet per second.