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Nikolay [14]
3 years ago
12

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:

49

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

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234.2 in expanded form
avanturin [10]

Answer:

Expanded Notation Form:

 

234.2

=

 

200

 

+

30

 

+

4

 

+

 

0.2

Expanded Factors Form:

 

 

234.2

=

 

2 ×

100

 

+

3 ×

10

 

+

4 ×

1

 

+

2 ×

 

0.1

Expanded Exponential Form:

 

234.2 =

2 × 102

+

3 × 101

+

4 × 100

+

2 × 10-1

Word Form:

234.2 =

two hundred thirty-four and two tenths

8 0
3 years ago
Angle A and Angle B are supplementary. Angle A has a measure of 3x - 6 and Angle B has a measure of 54. What is the value of x?
Anni [7]

Answer:

44 degrees

Step-by-step explanation:

Since they are supplementary, they add up to 180. This means that

3x - 6 + 54 = 180

Solving,

3x + 48 = 180

subtract 48 from both sides

3x = 132

divide both sides by 3

x = 44 degrees

8 0
3 years ago
3.5 - 1.05 please help
netineya [11]

Answer:

The answer is 2.45

Step-by-step explanation:

I used this magic device called a calculator!

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5 0
3 years ago
Read 2 more answers
As x approaches 4, the value of 4x + 3 approaches<br> Gri
gogolik [260]

Answer:

19

Step-by-step explanation:

4 \times x + 3 = 4 \times 4 + 3 = 16 + 3 = 19

3 0
3 years ago
Please answer this question please ​
Bas_tet [7]
<h3>Answer:</h3><h3 /><h3>Amount = Rs 13891.50</h3><h3>Compound interest = Rs 1891.50</h3>

Step-by-step explanation:

C = Amount (A) - Principal (P)

Where

C is the compound interest

To find the amount we use the formula

A = P ({1 +  \frac{r}{100} })^{n}

where

P is the principal

r is the rate

n is the period / time

From the question

P = Rs 12, 000

r = 5%

n = 3 years

Substitute the values into the above formula

That's

A = 12000 ({1 +  \frac{5}{100} })^{3}  \\ A = 12000(1 + 0.05)^{3}  \\ A = 12000 ({1.05})^{3}

We have the answer as

<h3>Amount = Rs 13891.50</h3>

Compound interest = 13891.50 - 12000

<h3>Compound interest = Rs 1891.50</h3>

Hope this helps you

8 0
3 years ago
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