Answer:
b
Step-by-step explanation:
Because the population is too large and it would be impractical to survey the whole population, a sample of the population is chosen to take part in the survey. This sample is taken as been representative of the whole population
Based on the sample, the fraction of students that speak more than one language fluently = 15/90= 0.166667
Population that would speak more than one language fluently = 0.166667 x 1800 = 300
Answer:
140 coins
Step-by-step explanation:
To calculate the total number of coins Kate have in her collection, we can use the rule of three:
The problem says that 7 of her coins are equivalent of 5% of her entire collection, and we want to know the total number of coins (100%) of her collection. So, if 7 coins are 5%, how much coins are 100%:
7 -> 5%
X -> 100%
7/X = 5/100
X = 100*7/5 = 140 coins
The lateral area of the right octagonal prism is 672 square inches
<h3>How to determine the lateral area</h3>
The formula for lateral area of a right octagonal prism is expressed as;
Lateral area = 8ah
Where;
- a is the side length = 7 Inches
- h is the height of the prism = 12 Inches
Substitute the values into the formula
Lateral area = 8 × 7 × 12
Multiply through
Lateral area = 672 square inches
Thus, the lateral area of the right octagonal prism is 672 square inches
Learn more about lateral area here:
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Answer : commutative
explanation: When two numbers are added or multiplied, this can be done in any order and the same answer will be obtained. Addition example: 3 + 2 = 5, 2 + 3 = 5; Multiplication example: 4 x 6 = 24, 6 x 4 = 24.
Answer:
b 25
Step-by-step explanation:
