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3 years ago

Two more than 5 times a number is 77

Mathematics

1 answer:

WARRIOR [948]3 years ago

8 0

2+5n=77
minus 2
5n=75
divide 5
n=15

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Oscar was not safeguarding his personal identification and chose a two-digit PIN for his debit card using the numbers 0 - 9. Wit

ryzh [129]

There are 90 different identification numbers possible.

<h3>What are the permutation and combination?</h3>

In terms of mathematical concepts, “permutation” and “combination” are related to each other.

The combination is the counting of selections that we make from n objects.

Oscar was not safeguarding his personal identification and chose a two-digit PIN for his debit card using the numbers 0 - 9.

There are 10 possible values for each digit of the PIN (namely: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9), so there are;

10 × 10 = 100 total possible PINs.

Now, because you can't use the same number twice, we subtract 10 from 100 because there are 10 numbers that can match themselves.

100 -10 =90

Hence, there are 90 different identification numbers possible.

Learn more about combination here;

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2 years ago

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TEA [102]

Answer:

Step-by-step explanation:

So this is an isosceles triangle so the other angle must be x too.

So:

x+x+40 = 180

2x+40 = 180

2x = 140

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3 years ago

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Please answer this question!

natita [175]

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3 0

3 years ago

The bus drives 66 km at an average speed of 24 km/h. How long does the journey take?

rewona [7]

Answer:

2.75 hours

Step-by-step explanation:

Speed is 24km per hour ( $\frac{24km}{1hour}$ ), and the bus covered 66km.

We need to get a value of <em>km</em> with the rate (24/1) and distance (66) given.

We get: $\frac{1hour}{24km} *66km$ .

The km cancel out, leaving us with 66/24 hours, or 2.75 hours.

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3 years ago

A company took a survey about its new project. I did the hundred people surveyed, 44 liked the new product. What percentage of t

Aleks [24]

Answer:

The percentage people surveyed like to the new product is 44%.

Step-by-step explanation:

Given:

Company took a survey about its new project, hundred people surveyed, 44 liked the new product.

Now, to find the percentage of the people surveyed like to the new product:

People like new product / Total people surveyed × 100

$\frac{44}{100}\times 100$

$=0.44\times 100$

$=44$

So, it is 44%

Therefore, the percentage people surveyed like to the new product is 44%.

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4 years ago