Find the value of an expression: 2ab +4b+c if a= 10 b=5 and c=3
12)Express 9000 as product of powers of the prime factors. 13)Find the area of circle whose radius is 7 cm
14)A bag contain 4 red balls 5 blue balls and 1 black.
Answers
Answer:
11) 2ab + 4b + c
2(10) (5) + 4(5) + 3
100 + 23
123
13) πr^2
22/7 x 7 x 7
22 x 7
154 cm^2
12 and 14 idk I'm sorry.. hope it helps
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Answer:
11) 123
12) 2^3 x 3^2 x 5^3
13) 153.86
14) I'm afraid you did not complete this question
Step-by-step explanation:
11) 2ab + 4b + c
First, substitute the variables for numbers:
2 x 10 x 5 + 4 x 5 + 3
Do the multiplcation
100 + 20 + 3
Do the addition
123
11) 123
12) 9000 has 8 prime factors
2, 2, 2, 3, 3, 5, 5, 5
Now we write these as powers
3 twos = 2^3
2 threes = 3^2
3 fives = 5^3
Now we multiply them to get 9000
2^3 x 3^2 x 5^3
12) 2^3 x 3^2 x 5^3
13) Area of a circle formula: A = πr^2
Plugin the numbers:
A = π7^2
Simplify till you get the answer:
A = π7^2
A = π49
A = 153.86
13) 153.86
14) A bag contain 4 red balls 5 blue balls and 1 black.
I'm afraid you did not complete this question
14) I'm afraid you did not complete this question