Answer:
-19
Step-by-step explanation:
3x+2 = -55
-2 -2
3x = -55-2
3x = -55+-2
3x = -57
/3 /3
x=-19
The regression equation to predict the number of cans sold on a day that is 90°F will be 871.
<h3>What is the linear system?</h3>
A linear system is one in which the parameter in the equation has a degree of one. It might have one, two, or even more variables.
A convenience store manager notices that sales of soft drinks are higher on hotter days, so he assembles the data in the table, shown above. Use technology to find the equation of the least-squares regression line.
Then the regression line will be passing through (55, 340) and (84, 780). Then we have
y - 340 = 15.17(x - 55)
Then the regression equation to predict the number of cans sold on a day that is 90°F will be
y - 340 = 15.17 (90 - 55)
y = 871
More about the linear system link is given below.
brainly.com/question/20379472
#SPJ1
9514 1404 393
Answer:
x = 4
y = 2
Step-by-step explanation:
The triangles being similar means the side ratios are the same.
AB/FD = BC/DE and AB/FD = CA/EF
12/3 = (3x+8)/5 and 12/3 = 28/(y+5)
Multiplying by 5, the first equation becomes ...
20 = 3x +8
12 = 3x . . . . . . subtract 8
4 = x . . . . . . . . divide by 3
__
Multiplying by (y+5)/4, the second equation becomes ...
y +5 = 28/4
y = 2 . . . . . . . . subtract 5
Answer:
I'm not sure if you have answer choices but here's the explaination!!
Step-by-step explanation:
Reflect across the y-axis, translate 4 units to the right, and vertically stretch by a factor of 2.
Hope this helps!! Good luck. (:
