2 years ago

Mark earned $48. He spent $6 and saved the remaining money.

Mathematics

1 answer:

Mekhanik [1.2K]2 years ago

5 0

Answer:

1:7

Step-by-step explanation:

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For any set of n measurements, the fraction included in the interval y − ks to y + ks is at least 1 − 1 k2 . This result is know

djverab [1.8K]

Answer:

The interval [2.5, 12.5]

Step-by-step explanation:

<em>Tchebysheff’s Theorem states that for any distribution of probabilities if k ≥ 1, at least </em>

$100(1-\frac{1}{k ^2 })\%$

of the data will lie within k standard deviations of the mean.

We need then to find a k greater or equal than 1 such that

$100(1-\frac{1}{k ^2 })\%= 75\%$

or the equivalent equation

$(1-\frac{1}{k ^2 })= 0.75$

Finding the value of k

$(1-\frac{1}{k ^2 })=0.75\Rightarrow \frac{1}{k^2}=0.25\Rightarrow k^2=\frac{1}{0.25}\Rightarrow k^2=4\Rightarrow k=2$

So, applying Tchebysheff’s Theorem, the manager can assure that the number of employees that can be absent in a given day, lies in the interval

[7.5-2*2.5, 7.5+2*2.5] = [2.5, 12.5]

6 0

2 years ago

Please Help <br><br> Factor the polynomial: x^3 + 3x - 2x - 6

madreJ [45]

Answer:

(x^2-2)(x+3)

Step-by-step explanation:

x^3 + 3x^2 - 2x - 6

x^2(x+3)-2(x+3)

(x^2-2)(x+3)

6 0

1 year ago

Jared writes a multiplication expression with eight rational factors. Half of the factors are positive and half are negative. Is

soldi70 [24.7K]

Answer:

negative they are 4 negative factors

3 0

2 years ago

1. Fill in the blanks for the rules for working with exponents:

natima [27]

1.a)add
B) substract
C) multiply
D) one

2) 1002=1.002×10^3

3)2.8×10^-3 < 2.5×10^-2 < 1.2×103 <4×103

5 0

3 years ago

Read 2 more answers

Six more than twice a number is 24

Mars2501 [29]

Answer:

Step-by-step explanation:

I would say the answer is 6

6 + 6 than times by two is 24

3 0

2 years ago