Answer:
False (I assume it's a true/false question)
Step-by-step explanation:
Standard deviation measures how spread out the data is. If you add 8 to all the data values, the distribution of data moves to the right (on a graph) 8 units. The shifted data are no more and no less spread out than before. The standard deviation does not change.
2x - 15
15 is decreased that is the key word here which indicates subtraction.
twice a number with given variable x is 2x
subtraction always goes behind so 2x - 15
Answer:
f your number is x, then the difference between that number and 8 would be x-8. Twice that is 2(x-8)
Three times the sum of the number and 3 would be 3(x+3). So, you get the equation:
2(x-8)=3(x+3)
2x-16=3x+9
x=-25
Answer:
the equation 20+5r=50 should help you see how many rides he can ride.
Step-by-step explanation:
20+5r=50
1. <em>Subtract 20 from both sides. </em>
5r=30
2. <em>Divide by 5 to isolate r.</em>
r=6
Sam can ride 6 rides.
For this question, you would go;
11 - 14 = -3
Then;
-3 ÷ 3 = -1
The answer is b) -1
:)
