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3 years ago

Can you guys help please with all of the questions please

Mathematics

1 answer:

Alex17521 [72]3 years ago

8 0

Answer:

Step-by-step explanation:

a) $1.60 and $2.25

b)Unit rate

20 pens for $1.60

$One pen=\frac{1.60}{20}=0.08$

25 pens for $2.25

$onepen=\frac{2.25}{25}=0.9$

c)20 pens for $1.60 is best buy

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A computer repair service charges a one-time bench fee of $50 to diagnose the problem

polet [3.4K]

Y=35x+50 bc you already have to pay 50$ and then you spend 35 a hour and the X represents how many hours.

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3 years ago

A password has to use the following format: LDDDDLLL, where L can be any of the upper case letters in the alphabet, and D can be

maw [93]

Answer:

Only vowels and odd numbers:

$P = \frac{5}{26} *\frac{4}{25}* \frac{3}{24}* \frac{2}{23} *\frac{5}{10}* \frac{4}{9} *\frac{3}{8} *\frac{2}{7}$

Spells math:

$P = \frac{1}{26} *\frac{1}{25}* \frac{1}{24}* \frac{1}{23}$

Step-by-step explanation:

We have four letters, so the probability that one letter is a vowel is 5/26 (we have 5 vowels in a total of 26 letters), then the second letter has a probability of 4/25 of being a vowel (1 vowel used), and so on (third letter being vowel = 3/24 and fourth letter being vowel = 2/23)

Then, for the digits, we do the same, one digits has 5/10 probability of being odd, then the second digit has 4/9, the third has 3/8 and the fourth has 2/7.

So the final probability would be:

$P = \frac{5}{26} *\frac{4}{25}* \frac{3}{24}* \frac{2}{23} *\frac{5}{10}* \frac{4}{9} *\frac{3}{8} *\frac{2}{7}$

To find the probability that the password spells the word “MATH", each letter has to be a specific letter, so the first letter has 1/26 probability, the second has 1/25, and so on:

$P = \frac{1}{26} *\frac{1}{25}* \frac{1}{24}* \frac{1}{23}$

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3 years ago

If p is a true statement and q is false, what is the truth value of p ∨ q?

ZanzabumX [31]

P V q = T V F = T

so, pVq is true.

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3 years ago

A grocery store buys items and then applies a markup of 70%. What is the retail price of item that originally costs $10?

True [87]

Answer:

$17

Step-by-step explanation:

since your finding retail price u need to do 10×.7 and that would be 7 then and the 7 to 10

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3 years ago

Read 2 more answers

The height of the Empire State Building is 1250 feet tall. Your friend, who is 75 inches tall, is standing nearby and casts a sh

Lyrx [107]

Answer:

The length of the building's shadow = 550.66 ft

Explanations:

The height of the Empie State Building = 1250 feet

The friend's height = 75 inches

The length of the friend's shadow = 33 inches

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2 years ago