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GalinKa [24]
2 years ago
15

If one-half of a number decreased by 20 is 40, what is the number?

Mathematics
2 answers:
Anvisha [2.4K]2 years ago
8 0

Answer:

120

Step-by-step explanation:

Just add the 20 back to 40 and times by 2

40 + 20 = 60

60 * 2 = 120

DedPeter [7]2 years ago
8 0

Answer:

The number is: 120

Step-by-step explanation:

We have one-half of "a" decreased by 20 is 40

This means that:

(1/2)a-20=40

(1/2)a=60

a=120

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Change the 15 1/3 to an improper fraction (46/3). Next multiply this by (3/4).
(46/3)(3/4) = 46/4 = 23/2 = 11.5 gallons was used to water the plants

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5 0
2 years ago
The cost in dollars of producing x vehicles for a company is given by C(x)=1200x+5500
GarryVolchara [31]

The rate of change represents the <em>variable production</em> cost rate. The <em>production</em> cost is increased in 1200 units per each <em>additional</em> manufactured car.

<h3>Interpretation of a linear function</h3>

Let be C and x the production cost and the number of vehicles produced, it there is a <em>linear</em> relationship between the two variables, then we have the following formula:

C(x) = \dot r \cdot x + C_{o} (1)

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In a nutshell, the rate of change represents the <em>variable production</em> cost rate. The <em>production</em> cost is increased in 1200 units per each <em>additional</em> manufactured car. \blacksquare

To learn more on rates of change, we kindly invite to check this verified question: brainly.com/question/8223651

7 0
2 years ago
Evaluate the expression: 103​
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Answer: 100+0+3

Step-by-step explanation:

7 0
2 years ago
Distance= 2797.2 time= 0.15 speed
Nutka1998 [239]
Speed = Distance ÷ Time

Distance = 2797.2

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