.
Kevin conducted a survey of a random sample of registered voters in his town to determine their preferred candidate for mayor in the next election. The results of the survey are shown in the table below.
Survey Results
Candidate Likely Voter Preference
A 240
B 210
C 50
There are 18,000 registered voters in Kevin’s town. Based on the data in the table, what is the BEST estimate of the number of people who will vote for Candidate A if all the registered voters cast a ballot?
9600
4320
8640
3750
Answers
Step-by-step explanation:
I. Choose the correct answer: 4×1=4
1. The equation for ‘3 more than two times a number is 11’ is _______.
a) 2x + 3 = 11 b) 3x + 2 = 11 c) 2x – 3 = 11 d) 2x = 11
2. If
3
= 15 , then x = _______
a) 15 b) 45 c) 3 d) 12
3. The sum of two numbers is 49. If one of the numbers is 22, then the other number is ____.
a) 7 b) 17 c) 27 d) 37
4. If the sum of the ages of two children now is 20 years, then the sum of their ages after 5
years will be _______.
a) 22 b) 25 c) 15 d) 30
II. Fill in the blanks. 4×1=4
5. An ________ is a mathematical statement of equality involving variables and constants.
6. _________ expressions are those in which the highest power of the variable is 1.
7. Four times a number is 20, then the number is _________.
8. Ram’s present age is (x + 2), two years ago his age was _______.
III. State True or False. 4×1=4
9. 2
3 + 4x = 12 is an example for linear equation.
10. In an equation LHS is equal to RHS
11. To find the value of the variable, it is necessary to perform some mathematical operations
both sides of the equality sign.
12. 3 is the solution of the equation 5x + 6 = 24
Answer:
أنا حسين من فئة 8 ج مرحباً ، من فضلك ضع علامة على قائمة الدماغ