Answer:
Step-by-step explanation:
1. true
2. true
3. true
4. true
5. true
Answer:
20%
Step-by-step explanation:
65 and 78 are both multiples of 13. Divide both by 13, we get 5 and 6.
If we use 5 as our main value (100%), 6 would be 120% as adding 1 to the main number (5) increases it by 20%. So 6 is a 20% increase from 5.
:D
-4x + 9y = 9...............(1)
x - 3y = -6 Multiply through by 3:-
3x - 9y = -18..............(2)
adding equations (1) and (3):-
-x = -9
x = 9
Substitute for x in equation (1)
-4(9) + 9y = 9
-36 + 9y = 9
9y = 45
y = 5
Answer is x = 9 and y = 5
Answer: the 800 people interviewed.
Step-by-step explanation:
Definition of a sample in statistics : A sample is a subset of a population sharing some similar characteristics in them. It basically represents the whole population having same characteristics.
For the given case , " The poll surveyed 800 randomly selected adults nationwide.
Here 800 randomly selected adults nationwide are representing the whole population of adults nationwide..
Thus , the sample in this setting is: <u>the 800 people interviewed</u> .
Answer:
7 feet
Step-by-step explanation:
We are given that:
P=54
L=13+W
With this we can substitute so that the equation looks like this:
54=2(W+13+W)
Distribute 2 to everything inside the parenthesis:
54=2W+2W+26
Simplify the equation to:
54=4W+26
Isolate 4w by -26 on each side:
28=4W
Divide both sides by 4 to isolate W:
W=7
We can fact-check this:
W=7
L=13+7=20
P=2(W+L)
54=2(7+20)
54=54