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irina1246 [14]
3 years ago
12

Factory A can produce 45 machines in 20 minutes. Factory B can produce 30 machines in 15 minutes. If both factories produce mach

ines for 2 hours, wich factory will produce more machines? How many machines will be produced?
Mathematics
2 answers:
Jobisdone [24]3 years ago
8 0
Divide amount a minute by minutes so Factory A= 2.25   Factory B= 2 then multiply those by 2hrs or 120 minutes so 

Factory A = 270 and Factory B = 240
factory A produced more machines 
salantis [7]3 years ago
6 0
45machines:20mins
20mins=1/3hour
45machines:1/3hour
times 3
135machins=1hour
135machines per hour


B. 30 in 15
15=1/4 hour
30=1/4hour
times 4
120machines per hour

both produce for 2 hours



A. is 135*number of hours, B is 120 times number of hours
135*2+120*2=
270+240=
510

make 510 machines in 2 hours
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Select the correct answer.
eimsori [14]

Answer:

D

Step-by-step explanation:

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I The function f( g(x)) = x for all real x.

-2(-1/2X + 1/2) - 1

X - 1 - 1

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II. The function glAx)) = x for all real x.

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III. Functions fand g are inverse functions

Inverse of f(x)

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X = - 2Y - 1

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Y = - 1/2X - 1/2

Therefore, none of the above answers is correct.

The correct answer is therefore D

7 0
2 years ago
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Viefleur [7K]

Answer:

Step-by-step explanation:

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4 0
3 years ago
What is the solution set of the quadratic inequality x²-5≤0
mart [117]

Answer:

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x² = 5

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Natasha_Volkova [10]
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8 0
3 years ago
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