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s2008m [1.1K]
3 years ago
12

Find the average of the following numbers: * What is the average of the first n positive even numbers?

Mathematics
1 answer:
Allisa [31]3 years ago
4 0

Answer:

Step-by-step explanation:

2+4+6+8+10/n = a

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A jar contains $14.25 in quarters and dimes. There are 75 coins in the jar. Find the number of quarters in the jar.
Marianna [84]
Set up a system of equations.
d + q = 75
.1d + .25q = 14.25

Multiply the first equation by -.1 so that the "d's" will cancel.
-.1d -.1q = -7.5
.1d +.25q = 14.25
Now add the two equations together
      .15q = 6.75
divide both sides by .15
        q = 45
There are 45 quarters in the jar
8 0
3 years ago
A student works for 80 hours each month and plans to work for 5 hours each day, but only on days when scheduled to work. The fun
Greeley [361]

Answer:

C.  The value of f (4) is 60, and it represents the number of hours of work remaining for the month after working for 4 days

Step-by-step explanation:

So 5 time 4 equals 20...!

80 minus 20= 60

3 0
3 years ago
Find the Least common multiple of 4xy cubed and 2x squared y cubed
Mashcka [7]
Answer
The LCM for 4xy², 2x²y3 is the numeric part 4 multiplied by the variable part.
4xy²
Step-by-step explanation:

6 0
2 years ago
M angle PQS= 3x; m angle SQR=5x-20 <br> Find x
Dahasolnce [82]

Let as consider the complete ques is : Ray QS bisects ∠PQR. Solve for x and find m∠PQR. m∠PQS = 3x ; m∠SQR = 5x-20.

Given:

Ray QS bisects ∠PQR.

m∠PQS = 3x

m∠SQR = 5x-20

To find:

The value of x and m∠PQR

Solution:

Ray QS bisects ∠PQR. So,

m\angle PQS=m\angle SQR

3x=5x-20

3x-5x=-20

-2x=-20

x=10

The value of x is 10.

Now,

m\angle PQR=m\angle PQS+m\angle SQR

m\angle PQR=3x+5x-20

m\angle PQR=8x-20

Put x=10,

m\angle PQR=8(10)-20

m\angle PQR=80-20

m\angle PQR=60

Therefore, the m∠PQR is 60 degrees.

5 0
3 years ago
Please only answer if you know
marusya05 [52]

Answer:

A, C

Step-by-step explanation:

A.)

32 / 8 * 5.25 ----> 4 * 5.25 ----> 21

C.)

4 * 12.5 / 2----> 49 / 2 ----> 24.5

6 0
3 years ago
Read 2 more answers
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