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kondor19780726 [428]
3 years ago
14

A unit of electricity costs 13.2 pence. On average, Tanya uses 90 units of electricity per week. She pays for her bill in 12 wee

ks. How much will her electricity bill be then? £
Mathematics
1 answer:
Minchanka [31]3 years ago
6 0

Answer:

90*12=1080

1080*13.2=14256

14256:100=142,56pounds

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Within 11 years, the age of Peter will be half the square of the age he was 13 years ago. Calculate the current age of Peter. Re
OLga [1]

Answer:

21

ctto JBarnum

Step-by-step explanation:

P+11=(1/2)(P-13)^2

P+11=(1/2)(P^2-26p+169)

2(P+11)=(1/2)(2)(P^2-26p+169)

2P+22=P^2-26p+169

0=P^2-28p+147      ( -7 and -21)

(P-7)(P-21)=0

P=7,21                     (cant be 7 as 13 years from 7 is negative so peter is 21)

checking:

21+11=32

32=(1/2)(21-13)^2

32=(1/2)(8)^2

32=(1/2)64

32=32

correct

4 0
3 years ago
At 1:00 PM, you have 24 megabytes of a movie. at 1:15 P.M., you have 96 megabytes. What is the download rate in megabytes per mi
sladkih [1.3K]
Megabyte difference = 96 - 24 = 72
time difference = 1:15 - 1:10 = 15 min.

Download rate would be: 72 / 15 = 4.8

So, Your Answer would be 4.8 mb/min

Hope this helps!
7 0
4 years ago
Read 2 more answers
If F(x) = 5x - 7 and G(X) = x2 - 41, what is G(F(x))?
Viktor [21]
C is the answer to this
4 0
3 years ago
For tax purposes, a car rental company assumes each car in their fleet depreciates by 6% per year. If the initial value of a car
n200080 [17]

The value of a car after 10 years be $20898.27 if the car rental company assumes each car in their fleet depreciates by 6% per year option (a) $20898.27 is correct.

<h3>What is an exponential function?</h3>

It is defined as the function that rapidly increases and the value of the exponential function is always a positive. It denotes with exponent \rm y = a^x

where a is a constant and a>1

We can solve this problem by exponential function:

The word  depreciate means the price is decreasing.

We can find the value be when the car is 10 years old:

p = 38800(1 - 0.06)¹⁰

p = 38800(0.94)¹⁰

p = 20898.266 ≈ $20898.27

Thus, the value of a car after 10 years be $20898.27 if the car rental company assumes each car in their fleet depreciates by 6% per year option (a) $20898.27 is correct.

Learn more about the exponential function here:

brainly.com/question/11487261

#SPJ1

6 0
2 years ago
Please help! Will give points!!<br><br> -Which Function is Exponential?
LiRa [457]

Answer:

It should be C

Step-by-step explanation:

B is a quadratic function and A is a linear line.

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