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Marat540 [252]
3 years ago
7

If f(x) = 3^2and g(x)=x+2, find (f •g)(x).

Mathematics
1 answer:
Sidana [21]3 years ago
6 0

Answer:

Step-by-step explanation:

(f •g)(x)= 3x² * (x + 2)

            = 3x²*x + 3x² *2

            =3x³ + 6x²

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ch4aika [34]
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3 0
3 years ago
Tom drove at a constant speed 50 mph for 2.5 hours Albert drove at a constant speed of 65 mph for 2 hours. How many more total m
Alona [7]

Answer:

  5 miles

Step-by-step explanation:

distance = speed · time

Tom's distance = (50 mi/h)·(2.5 h) = 125 mi

Albert's distance = (65 mi/h)·(2 h) = 130 mi

Albert drove 130 -125 = 5 miles farther than Tom.

8 0
2 years ago
A Crane Lifts a load of 4000N to a height of 20m in 5 seconds. Calculate the power of the Crane in horse power​
Digiron [165]

Answer:

2.54379284 hp.

Step-by-step explanation: Torque is defined as the engines rotational force.  First we find the distance =  m in equation- then we use the formula Power = work/time = 16.7/ 5 = 3.34 and Horsepower formula is given by. Horsepower = (Torque × Speed) / 5252. HP = (3.34 × 4000) / 5252. HP = 13360/5252. HP = 2.54379284 hp.  

Given :    W=4000    m=?        h=20 m                      

Time of operation         t =5 s

Work done in lifting a box            W=mgh= ? ×12×20=4000 = m = 4000/240=16.6666667 = 16.7KG

Power required         P=  W/t   =  w/p = 120000/120 =1000 watts    We divide 60/5 = 120 then divide by 10 = 12 (being g)

3 0
2 years ago
Two bells ring every 10 and 25 minutes respectively. They start ringing together at 6 a.m. At what time will they next ring toge
qwelly [4]

Answer:

6:50

Step-by-step explanation:

The bell that rings every 10 min will ring at 6:00, 6:10, 6:20,6:30, 6:40, 6:50

The bell that rings every 25 min will ring at 6:00, 6:25, and 6:50

7 0
3 years ago
If y &gt; 2x + 12 , then what does y equal?
mario62 [17]

You would have to put this into a graph correct? Because if so, just put a point on the 12 on the y - axis and go up 2 and right 1 spot and place another dot. Then you will have correctly graphed the equation.

6 0
3 years ago
Read 2 more answers
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