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Sindrei [870]
2 years ago
5

11 The cost of petrol is £1.32 per litre. The price is reduced by 6%. Work out the new price. Give your answer to the nearest pe

nny.​
Mathematics
1 answer:
Ivahew [28]2 years ago
8 0

Answer:

The new price is $/£1.25

Step-by-step explanation:

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Complete parts (a) and (b) using the probability distribution below.
katen-ka-za [31]
Μ = (0×0.026) + (1×0.072) +(2×0.152) + (3×0.303) + (4×0.215) + (5×0.164) + (6×0.066) 
μ = 0 + 0.072 + 0.304 + 0.909 + 0.86 + 0.82 + 0.396
μ = 3.361 ≈ 3.4

We need the value of ∑X² to work out the variance
∑X² = (0²×0.026) + (1²×0.072) + (2²×0.152) + (3²×0.303) + (4²×0.215) + (5²×0.164) + (6²×0.066)
∑X² = 0+0.072+0.608+2.727+3.44+4.1+2.376
∑X² = 13.323

Variance = ∑X² - μ²
Variance  = 13.323 - (3.4)² = 1.763 ≈ 2

Standard Deviation = √Variance = √1.8 = 1.3416... ≈ 1.4

The correct answer related to the value of mean and standard deviation is the option D
<span>
An employee works an average of 3.4 overtime hours per week with a standard deviation of approximately 1.4 hours.</span>
7 0
3 years ago
Hey can you please help me posted picture of question
Anni [7]
You multiply the options in each section:

Shirts x skirts x shoes
7 x 6 x 4
=168

So, there are 168 combinations- Letter answer B
6 0
3 years ago
Read 2 more answers
How come eleven times eleven equal 121
sasho [114]
Try adding 11, 11 times. It is a long process, but it should give you what you are looking for. First. to break it down add 10 eleven time, then after you get 110 add the remaining 11.
8 0
3 years ago
Solving distance problems- <br> 10 points
slega [8]

Answer:

1.  54 and 9/20 km

2. 80 mm

3. 1.142 mi

4.0.83333 cm

Step-by-step explanation:

Do them all  by the butterfly method.

5 0
2 years ago
The sides of a square are 2 4/9 inches long. What is the area of the square?
Law Incorporation [45]
<span>2 4/9 = 22/9

Area of square = a^2 = (22/9)^2 = 484/81 square inches.

hope that helps</span>
5 0
3 years ago
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