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Flura [38]
2 years ago
13

A survey found that 3 out of 100 randomly selected people have red hair. How many people in a group of 12,000 randomly selected

people are likely to have red hair?
Mathematics
1 answer:
kirza4 [7]2 years ago
4 0

Answer:

360 people out of 1200 are likely to have red hair.

Step-by-step explanation:

So I just saw that 100 x 120 equals 1200. So I just need to multiply 3 x 120 and I got 360. I think this is how to solve?

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Work out the value of a and b in the identity.<br> 3ax + 6 - 4(x + b)= 11x + 14
Levart [38]

Answer:

a=5, b=-2

Step-by-step explanation:

If you simplify the equation, you get:

3ax +6 -4x -4b - 11x - 14 = 0 =>

3ax - 15x -4b -8 = 0

group together x's and constants:

(3a-15)x -8 -4b = 0

To make this 0 for all x, we have to find an a such that 3a-15 = 0 and b such that -8-4b = 0. this leads to a=5, b=-2

5 0
3 years ago
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4 years ago
Two number are in a ratio 4:3. Their sum is 70. Find the number
Semmy [17]

Answer:

30 AND 40

Step-by-step explanation:

SUM OF RATIO IS 4 + 3 = 7  

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2ND NUMBER : 3/7 × 70 = 30

3 0
4 years ago
On Dan's eReader 2/3 of the books are fiction. Of the fiction books, 4/5 are mysteries. What fraction of the books on Dan's eRea
GaryK [48]

Answer:

4/6

Step-by-step explanation:

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8 0
3 years ago
What is the area of a rectangle if one side has a length of 12x^3 and
mojhsa [17]

Answer:

The area of this rectangle is 72x^5

Step-by-step explanation:

A = l ∙ w

Let, l = length

Let, w = width

Step 1: Substitute the length and width for the two given values

    1. A = (12x³)(6x²)

Step 2: Multiply

    1. A = 72x^5

   

3 0
2 years ago
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