Answer:
x=10
Step-by-step explanation:
3x-20=10
add 20 to both sides
3x=30
divide 3 both sides
end with x=10
First make the equation equal y
Y=-2x-6
Then rearrange to make x the subject
2x=-y-6
X=(-y-6)/2
Then change the y's to x's
Inverse=(-x-6)/2
Answer:
486
Step-by-step explanation:
just multiply and divide
8 x 27 / 4 x 9
Answer:
Step-by-step explanation:
Hello!
The standard deviation (δ) is a measure of variability, this means, it shows how dispersed the data set is with respect to the mean. The population mean (μ) is a measurement of position. The three graphics have the same position μ=0 but their standard deviations change, this means, the form of their bells is different. The greater the value of the standard deviation, the more dispersed the data is you can see this graphically because the width of the bell will be greater.
Graph attached.
I hope it helps!