Well, 1/2*7=3.5. So you have to do each equation to see which ones are not equal to 3.5. A) 1*7=7/2=3.5 so A is not the right answer. B) 1/2*7=1/14=.07, so B is one of the correct answers. C) 1*7=7*2=14, so C is another one of the correct answers. D) 1*7/2=7/2=3.5, so D is not a correct answer. E) 14 is not equal to 3.5, so E is another correct answer. So the correct answers are B, C, and E.
The answer is that the assumed margin of error is 5%.
Here is how we calculate this;
<span>presidential approval rating is between 47% and 57%
</span>(57% - 47% ) / 2 = 10/2 = 5%
Answer:
4 goats
Step-by-step explanation:
Let us represent
Number of quails = x
Number of goats = y
Quails have 2 legs
Goats have 4 legs
Hence:
There are 6 animals in the pen some are quails and some are goats
x + y = 6...... Equation 1
x = 6 - y
if there are 20 legs in all how many quails
2x + 4y = 20..... Equation 2
We substitute 6 - y for x in Equation 2
2(6 - y) + 4y = 20
12 - 2y + 4y = 20
Collect like terms
- 2y + 4y = 20 - 12
2y = 8
y = 8/2
y = 4 goats
The number of goats there are 4 goats
Answer:
y = -2x - 1
Step-by-step explanation:
Parallel lines have the same slope, so the slope will also be -2.
Plug this slope and the given point into the equation y = mx + b and solve for b:
y = mx + b
5 = -2(-3) + b
5 = 6 + b
-1 = b
Then, plug this and the slope into the equation:
y = -2x -1 will be the equation
Answer:
f(x)=start fraction 4 over x squared End fraction minus start fraction 2 over x end fraction +1
