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EleoNora [17]
2 years ago
13

A bag contains green marbles and red marbles, 43 in total. The number of green

Mathematics
1 answer:
sukhopar [10]2 years ago
6 0
26

r + 2r - 8 = 43
3r = 51
r = 17
g = 2r-8 = 34-8=26


Mark brainliest please
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A palindromic number is a number that reads the same forwards as it does backwards (example: 282 or 51715). How many 5-digit pal
Anuta_ua [19.1K]

Palindromes are numbers whose reverse is the same as the original number

There are twenty-five 5-digit palindromic numbers, that have digits that add up to 14

<h3>How to determine the count of 4-digit palindromes</h3>

The digit of the palindromic number is 5.

This means that:

  • The first digit of the palindrome can be any of 1 to 7 (because 7 is half of 14)
  • The second digit can be any of 0 - 6 (i.e. 7 digits)
  • The third digit can be any of 9 digits
  • The fourth digit must be the second digit (i.e. 1 digit)
  • The last digit must be the first digit (i.e. 1 digit)

So, the total number of digits is:

Total = 7 + 7 + 9 +  1 +1

Total = 25

Hence, there are twenty-five 5-digit palindromic numbers, that have digits that add up to 14

Read more about palindromes at:

brainly.com/question/26527765

8 0
2 years ago
What's 2⁄3 written as a fraction with a denominator of 9? A. 2⁄9 B. 9⁄9 C. 3⁄9 D. 6⁄9
sdas [7]
Hey there!

Mutliply numerator/denominator  by 3

2/3= 6/9

So the answer is D
4 0
3 years ago
Read 2 more answers
A=lw Solve for w?? “One Step Problems”
Tresset [83]

Answer:

w=A/l

Step-by-step explanation:

4 0
2 years ago
1/3(x - 10) = - 4<br><br> x = ?
ki77a [65]

Answer:

x = -2

Step-by-step explanation:

1/3(x - 10) = - 4

1/3x - 10/3 = - 4

1/3x = -4 + 10/3

1/3x = -2/3

x = -2/3 · 3

x = -2

7 0
2 years ago
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The formula for the standard deviation of a sample is:
timofeeve [1]

Answer:

d. The variance is 9.56 and the standard deviation is 3.09.

Step-by-step explanation:

From the above question, we are given the following data set.

3, 7, 8, 8, 8, 9, 10, 10, 13, 14

a) Mean = 3 + 7 + 8 + 8 + 8 + 9 + 10 + 10 + 13 + 14/ 10

= 90/10

= 9

b) Variance

The formula for sample Variance = (Mean - x)²/ n - 1

Mean = 9

n = 10

Sample Variance =

(3 - 9)² + (7 - 9)² + (8 - 9)² + (8 - 9)² + (8 - 9)² + (9 - 9)² + (10 - 9)² + (10 - 9)² + (13 - 9)² + (14 - 9)² / 10 - 1

= 36 + 4 + 1 + 1 + 1 + 0 + 1 + 1 + 16 + 25/9

= 86/9

= 9.555555556

≈ Approximately 9.56

Variance = 9.56

Sample Standard deviation = √Sample Variance

= √9.56

= 3.0919249667

≈ Approximately 3.09

5 0
3 years ago
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