Answer & Step-by-step explanation:
Regression studies the relationship between independent / explanatory (causal) variable, dependent / response (effected) variable. Scatter plot is a diagrammatic representation of regression.
Aspartame Concentration, being a toxic substance, is likely to have negative regression relationship with mice survival rate. It implies that higher concentration leads to lower mice survival, & lower concentration leads to higher mice survival.
The relationship can be strong or weak, depicted by 'r' magnitude, depending upon the intensity of concentration impact on survival. If more percent of the variation in survival rate can be explained by variations in concentrations, regression coefficient is high. If less percent of the variation in survival rate can be explained by variations in concentrations, regression coefficient is low
Answer:
72
Step-by-step explanation:
216/3=72 in each bus.
A = L * W
A = 99
L = 2W + 7
99 = W(2W + 7)
99 = 2W^2 + 7W
-2W^2 - 7W + 99 = 0
(-2W + 11)(W + 9) = 0
-2W + 11 = 0
-2W = -11
W = -11/-2
W = 5.5
W + 9 = 0
W = -9 .....not this one because it is negative
so the width (W) = 5.5ft <====
L = 2W + 7 .....2(5.5) + 7 = 18 ft is the length (L) <==
Answer:
h
Step-by-step explanation:
Margo must buy 60 tiles for the cost to be the same at both stores.
Step-by-step explanation:
Let x be the number of tiles purchased
Then
For Store 1:
24+0.79x
For store 2:
1.19x
For the number of tiles, we have to put both expression equal
subtracting 24 from both sides
Subtracting 1.19x from both sides
Dividing both sides by -0.4
Hence,
Margo must buy 60 tiles for the cost to be the same at both stores.
Keywords: Linear equations
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