X should equal 70 I think.
Step-by-step explanation:
x^2+4x=15
x(x+4)=15
x=15 and x=-4
Answer:
ŷ = 0.1286X - 123.2175 ;
r = 0.947
r² = 0.896
Step-by-step explanation:
Given the data:
Traffic Flow, X : ____Vehicke speed ;Y()
1257 ______________36
1329 ______________45
1227 ______________30
1336 ______________50
1349 ______________55
1124 ______________ 25
The estimated regression equation using a linear regression calculator based on the data given above is given thus:
ŷ = 0.1286X - 123.2175
Where ;
y = dependent variable (vehicle speed)
x = predictor variable (traffic flow)
Slope = 0.1286
Intercept = 123.2175
The correlation Coefficient, R, obtained using the correlation Coefficient calculator is 0.9465, This depicts a very strong positive relationship between traffic flow and vehicle speed.
The Coefficient of determination, R² which is the squared value of the correlation Coefficient = 0.9465² = 0.8958 gives the proportion of explained variance ; This means about 89.5% of variation in Vehicle speed can be explained by the regression line.
Answer:
A, E, F
Step-by-step explanation:
2/9 is the fraction equivalent of 0.222222 repeating. 4/15 is the fraction equivalent 0.266667 repeating. 7/11 is the fraction equivalent of 0.636364 repeating.
Answer:
$0.70 per mile
47 miles = $32.90
Step-by-step explanation:
Set up a proportion
36 miles / $25.20 = 1 mile / $x
Cross multiply
36x = 25.20
Divide both sides by 36
x = 0.7
0.7 × 47 to find the cost for 47 miles
0.7 × 47 = 32.90
I hope this helped and please mark me as brainliest!
