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MrRa [10]
3 years ago
5

Petra’s electricity supply company charges her a fixed quarterly sum plus a rate per unit for electricity used. In the most expe

nsive quarter last year (January to March), she used 2 000 units and her bill was $250. In the least expensive quarter (July to September), she used 600 units and her bill was $138. She is now adding extra insulation to her home which is expected to reduce her overall electricity consumption by 25%. What can she expect her January to March bill to be next year (if there are no increases in overall tariffs)? *
Mathematics
2 answers:
Arlecino [84]3 years ago
6 0

Answer:

The size of ur mamma

Step-by-step explanation:

21

antoniya [11.8K]3 years ago
6 0

Answer:

I'm not that smart yet so I'm sorry I can't help you

Step-by-step explanation:

Sorry

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What is $6.25 marked up 25%
Marta_Voda [28]

Answer:

$6.25 marked up 25% is $7.81

Step-by-step explanation:

First, you have to find what 25% is of 6.25.

Step 1: Our output value is 25.

Step 2: We represent the unknown value with x.

Step 3: From step 1 above, 25=100%.

Step 4: Similarly, x=6.25%.

Step 5: This results in a pair of simple equations:

25=100%(1)

x=6.25%(2)

Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both

equations have the same unit (%); we have

<u>25 </u> =   <u>100</u>

 x       6.25

Step 7: Again, the reciprocal of both sides gives

<u> x </u> =  <u>6.25</u>

25     100

x= 1.5625

x≈ 1.56

Once you've known what 25% is, you add it to 6.25.

1.56+6.25= 7.81

7 0
3 years ago
If the interest earned on an account after 7 years at 6% is $1785 ,what is the initial value
gayaneshka [121]

Answer:

$4250

Step-by-step explanation:

i = prt

or

p = i / rt

where,

i = $1,785

r = 6% = 0.06

t = 7 years

So, we can calculate initial vale by putting the values in above equation;

p = $1,785 / (0.06 x 7)

p = $1,785 / 0.42

p = $4,250

Hence the initial value will be $4250

8 0
3 years ago
1.546 + 0.07 how to subtract decimals i dont wanna fail 6th grade
cestrela7 [59]

Answer: 1.616 of adding and subtracting will be 1.476

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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