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daser333 [38]
3 years ago
14

4b) Work out the mean and standard deviation of the following: picture included

Mathematics
1 answer:
Jlenok [28]3 years ago
4 0

Answer:

Yes, your simultaneous equations are correct;

Solve them like so:

170 + 1.6449σ = 180 - 0.8416

2.4865σ = 10

σ = 4.0217...

μ = 170 + 1.6449(4.0217...)

μ = 176.615...

MS is correct, you must've made an error in solving or rearranging

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Answer:

Step-by-step explanation:

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2 years ago
According to his GPS, it will take Lanny 1 hour to travel 40 miles. Which expression shows how to determine the speed in miles p
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3 years ago
Which equation represents the line that passes through the point (4, -5) and is perpendicular to the line x + 2y = 5?
Lerok [7]

Answer:

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Step-by-step explanation:

Equation of a line is y = mx + c, m is the gradient and c is the intercept

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When two lines are perpendicular, the products of their gradients are equal to -1, m1 * m2 = -1

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y = 2x - 13

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3 years ago
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Answer:

hello there im sam and im going to help you with your answer.

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Gcd(3,2)=1   Hope this helps!!

(The answer is 1)
4 0
4 years ago
Read 2 more answers
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