All categories

3 years ago

The average of 7 numbers is 45.If the last two numbers are 27 and 43 what is the average of the first five

Mathematics

1 answer:

Paul [167]3 years ago

4 0

Answer:

Step-by-step explanation:

The average is calculated as

average = $\frac{sum}{count}$ Given the average of 7 numbers is 45 , then

$\frac{sum}{7}$ = 45 ( multiply both sides by 7 )

sum of 7 numbers = 315

Subtract 27, 43 from the sum to obtain the sum of first 5 numbers

315 - (27 + 43) = 315 - 70 = 245 , then

average of first 5 numbers = $\frac{245}{5}$ = 49

You might be interested in

|6-27| how the answer this question

sweet [91]

Answer:

First notice that they’re asking for the absolute value of the equation.

The absolute value is how far that number is from 0.

Basically it’s the number without a negative sign.

ok so 6-27 = -21

The product for 6-27 (21) is 21 spaces away from 0.

|6-27| = 21

21 is the answer to your question.

Hope this helped and pls mark me brainliest if it did :)

7 0

2 years ago

Read 2 more answers

Record sales are increasing by 5% each year. If 800,000 records were sold this year, what will annual sales be in 3 years?

Olenka [21]

Answer:

120000

Step-by-step explanation:

3 0

2 years ago

What is the solution set for -2n-2≥2? A. n≤-2 B. n≥-2 C. n≤0 D. n≥0

shusha [124]

Answer:

n≤−2 or A

Step-by-step explanation:

because i know

7 0

2 years ago

Read 2 more answers

Answer these please tell me 1. What the error was 2. How can U check ur answer

emmainna [20.7K]

Answer:

The first one: the error was that the 3 shouldn’t have been moved but the 5 should have. The correct answer is k=-8

The second one: the error was that they added the 6 and 4, you would only get -10 if the 4 was - the correct answer is -2

You can check your answer by plugging in your answer to the variable and making sure both side equal each other

Step-by-step explanation:

The first one: the 5 should be - from both side so you get k=-8

The second one: the 4 should be + to both sides. And the -6 and +4 should be added together to get n=-2

Remember you always want to get the variables by themselves.

Sorry that was a lot. Hope it helps!

8 0

2 years ago

Mariana plans to visit an amusement park where she must pay for admission and purchase tickets to go on the rides. Mariana wants

Ivanshal [37]

Answer: The number 12 represents admission charge in Mariana's equation.

Step-by-step explanation:

As per given ,

Total cost = ( Charge per ticket) (Number of tickets) + (Admission fees) (i)

For x = Number of tickets, the total cost (c) for a day at the amusement park is given as

$c = 1.50x + 12$ (ii)

Here, 12 = Admission fees [Comparing (i) and (ii)]

Hence, the number 12 represents admission charge in Mariana's equation.

3 0

2 years ago