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Usimov [2.4K]
3 years ago
5

a cost of a pen is unknown the cost of the notebook is 30 cents more than the pen mary brought 8 pens and 5 notebooks and spend

8 dollars calculate the cost of the pen and the notebook​
Mathematics
1 answer:
Cloud [144]3 years ago
7 0
The answer is 30 cents
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1)Why is the statement incorrect that probability can be used to predict the result of an activity?
vladimir2022 [97]

Answer with explanation:

→The Exact meaning of Probability is Chance.It Means ,that Something will happen or not in terms of rational numbers.

→As, Probability of an event lies between ,0 to 1, means ,the result is not Precise ,whether it will happen surely that is exactly 100% or it will not, that is 0%.Percentage of happening of anything lies between 0% to 100%.

→0 ≤ Probability ≤ 1,shows that ,if we represent it on the number line, it is Scattered from ,0 to 1.

These three reasons are enough to verify that, Probability can't be used to Predict exactly ,the result of an Activity.It is just representation in terms of rational number.

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3 years ago
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Boris is a web developer. His annual gross salary is $45,000. From this, he must pay social security (calculated as 10% of his g
Semenov [28]

Answer: $32,625

Step-by-step explanation:

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1/5 = x/1100                                                    

5x = 1100
x = 1100 ÷ 5
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3/10 = x/1100

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So 367 people chose red

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Rewrite 7/10 and negative 2/5
goblinko [34]
0.7 and -0.4 is you wanted them as decimals
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