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myrzilka [38]
3 years ago
12

A friend tells you about a recent study dealing with the number of years of teaching experience among current college professors

. He remembers the mean but can't recall whether the standard deviation was 6 months, 6 years or 16 years. Which was it?
Mathematics
1 answer:
Mashutka [201]3 years ago
8 0

Answer:

6 years

Step-by-step explanation:

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Suha is going to buy 150 envelopes.
Katyanochek1 [597]

Suha should buy 150 envelopes from shop 1 because the cost in shop 1 is 0.06 less shop 2.

<u>Step-by-step explanation</u>:

Total number of envelopes = 150

<u>The cost of envelopes :</u>

  • Pack of 25 envelopes in shop 1 = 3.49
  • Pack of 10 envelopes in shop 2 = 2.10
  • Buy 2 packs get 1 pack free in shop 2.

<u>Shop 1 :</u>

The number of packs to buy 150 envelopes = 150 /25 = 6 packs

The total cost to buy 6 packs = 6 × 3.49 = 20.94

The cost of 150 envelopes in shop 1 is 20.94

<u>Shop 2 :</u>

The number of packs to buy 150 envelopes = 150 /10 = 15 packs

  • For each 2 packs you get 1 pack free.
  • 10 packs + 5 free packs = 15 packs

The total cost to buy 10 packs = 10 × 2.10 = 21

The cost of 150 envelopes in shop 2 is 21

The difference between shop 2 and shop 1 = 21 - 20.94 = 0.06

Therefore, the cost in shop 1 is 0.06 less than shop 2. So, Suha should buy 150 envelopes from shop 1.

8 0
3 years ago
Read 2 more answers
Can you solve this using systems of equations for the parallelogram?
GREYUIT [131]

Answer:

no we can't

Step-by-step explanation:

because in the parallelogram the sides should be equal to each other.

ı mean the sides whıch face each other has to be same.

4 0
3 years ago
A car rental costs a fee of $150 plus $35 per
lutik1710 [3]

Answer:

5 hours

Step-by-step explanation:

We know that Joey spent a total of $325. He first paid the fee of $150. Let's subtract $150 from $325.

$325 - $150 = $175

Now, we know that it costs $35 per hour to rent the car. So, we divide $175 by $35 to find out how many hours Joey rented the car for.

$175 ÷ $35 = 5 hours

3 0
3 years ago
Which fraction is great than 2/5?
zysi [14]
1/2 or 1 whole that's the answer
4 0
3 years ago
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Pilar used five reusable shopping bags on a recent purchase she made at a grocery store. Each bag decreased the amount she spent
almond37 [142]

Answer:

-25 is the correct answer

Step-by-step explanation:

hope this helps:)

7 0
3 years ago
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