8) 18 is 9x2,

= 3 * about 1.4 = something above 4 (answer 3)
9) 3800 miles / 200 miles a year = 19 years.... 1957+19 years = 1976 (answer 4)
10) individuals + defence = 25% + 42 % = 67%, this means that 100%-67% = 33% left (answer 3)
11) not enough info given. they should give you height of fence - answer 5
Answer:
x= 3/8 or 0.375
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
7x+−12=3x+1
Step 2: Subtract 3x from both sides.
7x+−12−3x=3x+1−3x
4x+−12=1
Step 3: Add 1/2 to both sides.
4x+−12+12=1+12
4x=32
Step 4: Divide both sides by 4.
4x4=324
x=38
Answer:
19.4236 is your answer
Step-by-step explanation:
Answer:
See explanation
Step-by-step explanation:
If the mystery number rounds to 700, then it has 3 digits before decimal points and two digits after decimal point.
Hence, the mystery number is

The digit in the tenth place is double the digit in the tens place, so

If b = 1, then d = 2
If b = 2, then d = 4
If b = 3, then d = 6
If b = 4, then d = 8
The difference between the digit in the hundreds place and the ones place is 3, so

The first digit can be only 7, because b < 5 and the number rounds to 700. So
If a = 7, then c = 4
All possible answers:
714.2e
724.4e
734.6e
744.8e,
where e is an arbitrary digit from 0 to 9.
There are 40 possible numbers which match the situation.