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3 years ago

£340 is increased by 8% then this is decreased by 12%

Mathematics

1 answer:

Nookie1986 [14]3 years ago

5 0

Answer:

Step-by-step explanation:

'Percent (%)' means 'out of one hundred':

p% = p 'out of one hundred',

p% is read p 'percent',

p% = p/100 = p ÷ 100.

12% = 12/100 = 12 ÷ 100 = 0.12.

100% = 100/100 = 100 ÷ 100 = 1.

Increase the number by 12% of its value.

Percentage increase = 12% × 340

New value = 340 + Percentage increase

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Answer:

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Step-by-step explanation:

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4 years ago

Victoria recently switched to a new electric company. If she uses between 0 and 400 kilowatt-hours (kWh) of electricity per mont

Gekata [30.6K]

Answer:

see the explanation

Step-by-step explanation:

The question is

Identify the domain and the range, using words and inequalities

Let

x -----> the number of kilowatt-hours (kWh) of electricity per month

y ----> the price per month

we know that

Part 1) For the value of x between 0 kWh and 400 kWh

$0\ kWh \leq x < 400\ kWh$

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therefore

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The range is ($30)

The range is equal to $30

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$x\geq 400\ kWh$

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The domain is all real numbers greater than or equal to 400 kWh

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3 years ago

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Answer:
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Step-by-step explanation:

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