3 years ago

Consider a t distribution with 21 degrees of freedom. Compute P<−1.55

Mathematics

1 answer:

matrenka [14]3 years ago

4 0

Answer:

who knows such types of answer

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4 kg of bananas and 3 kg of apples cost £7.50. 3kg of bananas and 5 kg of apples cost £8.10. work out how much 2kg of bananas an

Tanzania [10]

Answer:

£4.20

Step-by-step explanation:

Let :

cost of 1 kg banana = x
cost of 1 kg apple = y

Equations formed :

4x + 3y = 7.50 [Equation 1]
3x + 5y = 8.10 [Equation 2]

Multiply Equation 1 by 5 and Equation 2 by 3 :

20x + 15y = 37.50
9x + 15y = 24.30

Subtract the newly formed equations :

11x = 13.20
x = 1.20

Finding y :

4(1.20) + 3y = 7.50
4.80 + 3y = 7.50
3y = 2.70
y = 0.90

Then :

Cost of 1 kg banana = £1.20
Cost of 1 kg apple = £0.90

Cost of 2 kg bananas and 2 kg of apples :

2(1.20) + 2(0.90)
2(2.10)
£4.20

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3 years ago

What's 45 out of 58 in percentage?

Vladimir [108]

$For \ any \ percentage \ you \ just \ take \ the \ number, \ here \ 45, \\ divide \ by \ the\ number \ here\ 58,\ and \ multiply \ by \ 100 \ \%. \\\\ \frac{45}{58}\cdot 100 \ \%= 0,7758 \cdot 100 \ \%=77,58 \ \% \approx 78 \ \%$

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ki77a [65]

Answer:

Step-by-step explanation:

1)down 8 up 10

2)11.2

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