First of all, move the known term (-9) at the left of the equal with changed sign.
5z = 36+9
5z = 45
Divide both terms by 5
5z/5 = 45/5
z = 9
Answer:
0.15%
Step-by-step explanation:
3 standard deviations encompasses 99.7% of the data symmetrically around the mean with 0.15% on each side that is above and below. so above would be 0.15%
Answer:
4
Step-by-step explanation:
Just plug in -9 to the equation
6(-9) + 9y = -18
-54 + 9y = -18 isolate 9y
54 - 54 + 9y = -18 + 54
9y = 36 isolate y
9y/9 = 36/9
y = 4
A snail travels at a rate of 2.58 feet PER MINUTE. After 9 minutes, it will travel 2.58 * 9 feet.
2.58 * 9 = 23.22 feet.
The snail travels 23.22 feet in 9 minutes.
You can see that it travels 2.58 feet per minute. In the next minute, it will travel another 2.58 feet. And so on until the 9th minute passes. This is the same as:
2.58 + 2.58 + 2.58 + 2.58 + 2.58 + 2.58 + 2.58 + 2.58 + <span>2.58 = 9 * 2.58 = 23.22</span>
