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AysviL [449]
3 years ago
6

A jar contains only​ pennies, nickels,​ dimes, and quarters. There are 23 ​pennies, 22 ​dimes, and 20 quarters. The rest of the

coins are nickels. There are 79 coins in all. How many of the coins are not​ nickels? If n represents the number of nickels in the​ jar, what equation could you use to find​ n?
Mathematics
1 answer:
goldfiish [28.3K]3 years ago
8 0

<em>Answer:</em>

<em>1. 65 coins</em>

<em>2. 79 - (23 + 22 + 20) = n</em>

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

<em>You can use the expression 23 + 22 + 20 to get the amount of coins that are not nickles. And for two? Try it yourself.</em>

<em>Hope this helps. Have a nice day.</em>

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A school district transported a total of 409 students and teachers to a zoo in buses and vans.
valina [46]

Answer: There are 385 students and teachers who rode to the zoo in buses and 24 students and teachers who rode to the zoo in trains.

Step-by-step explanation:

Since we have given that

Total number of students and teachers = 409

Let the number of vans be x

Let the number of buses be x+5

Number of students and teachers each bus transported = 55

Number of students and teachers each van transported = 12

According to question,

55(x+5)+12x=409\\\\55x+275+12x=409\\\\67x=409-275\\\\67x=134\\\\x=\frac{134}{67}\\\\x=2

Total number of students and teachers who rode to the zoo in buses will be

55(x+5)\\\\=55(2+5)\\\\=55\times 7\\\\=385

Total number of students and teachers who rode to the zoo in vans will be

12x\\\\=12\times 2=24

Hence, there are 385 students and teachers who rode to the zoo in buses and 24 students and teachers who rode to the zoo in trains.

6 0
3 years ago
X^2+6x+3/x+2 <br> divide polynomial
melamori03 [73]

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x

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2

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8 0
3 years ago
What is the Kinetic Energy of a 15 kg object that is moving with a speed of 30 m/s?
crimeas [40]

Answer:

6750J

Step-by-step explanation:

30^2=900 900x15=13500 13500/2=6750

5 0
3 years ago
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F(X)=3x-12 what is f(2)
Vinil7 [7]

Answer:

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Step-by-step explanation:

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I hope this is the answer you were looking for
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