We conclude that the relation presented in the picture is a function with domain: - 4 ≤ x < 1 and range: - 4 ≤ x ≤ 5. (Correct choices: B, C, H)
<h3>How to determine the domain and range of a relation and if a relation is a function</h3>
Herein we have a relation between two variables, x and y, relations involve two sets: an input set called domain and an output set called range. A relation is a function if and only if every element of the domain is related to only one element from the range.
Graphically speaking, the horizontal axis corresponds with the domain, whereas the vertical axis is for the set of the range. According to the previous concepts, we conclude that the relation presented in the picture is a function with domain: - 4 ≤ x < 1 and range: - 4 ≤ x ≤ 5. (Correct choices: B, C, H)
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A group of preschoolers has 30 boys and 13 girls then the ratio of boys to all children would be 30:43.
What is a ratio?
A ratio in mathematics shows how many times one number contains another. For example, if a bowl of fruit contains eight oranges and six lemons, the orange-to-lemon ratio is eight to six. Similarly, the lemon-to-orange ratio is 6:8, and the orange-to-total fruit ratio is 8:14.
A group of preschoolers has 30 boys and 13 girls.
Total children will be = 30 + 13 = 43
Ratio = number of boys/total children
= 30/43.
Hence, if A group of preschoolers has 30 boys and 13 girls then the ratio of boys to all children would be 30:43.
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Answer:
D. 1,520 seconds
E. 1,580 seconds
Step-by-step explanation:
Options:
A. 1,420 seconds
B. 1,480 seconds
C. 1,500 seconds
D. 1,520 seconds
E. 1,580 seconds
Emily's homework is to read for more than 25 minutes every night.
1 minute = 60 seconds
25 minutes 
seconds
more than 25 minutes is more than 1,500 seconds
Options D and E give you times that are greater than 1,500 seconds, options A, B and C give you times that are less or equal to 1,500 seconds.
Answer: George can make 2/3 section of fence an hour.
Explanation: If george can make 1/3 section every half hour than he can make double 1/3 every hour.
1/3 + 1/3 = 2/3
He can make 2/3 every hour.
Answer:
the answer is 182
Step-by-step explanation:
