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Question 1116936: Helping my son with some algebra stuff. We're struggling with systems of equations. What we're struggling with mostly is 'why' you do the order of operations in the way they are done. Here's the problem:
a-6=2b
a+b=15
The questions calls for the point where the these equations cross (#,#)
Here's where we are:
Consolidating the problems: a+2b+a+b=6+15 or 2a+3b=21
Using the basic y=Mx+b to get slope.
Now have no clue where to go from here.
Appreciate the help
Robert & Jason
Click here to see answer by solver91311(24713)  |
Question 1116936: Helping my son with some algebra stuff. We're struggling with systems of equations. What we're struggling with mostly is 'why' you do the order of operations in the way they are done. Here's the problem:
a-6=2b
a+b=15
The questions calls for the point where the these equations cross (#,#)
Here's where we are:
Consolidating the problems: a+2b+a+b=6+15 or 2a+3b=21
Using the basic y=Mx+b to get slope.
Now have no clue where to go from here.
Appreciate the help
Robert & Jason
Click here to see answer by ikleyn(52781)  |
Question 1117045: Tickets for a high school talent show were $5 for students and $7 for adults. A total of 268 people attended the show. The school collected $1594 in ticket sales. Which system of linear equations can be used to find how many student tickets were sold?
Click here to see answer by ikleyn(52781)  |
Question 1117045: Tickets for a high school talent show were $5 for students and $7 for adults. A total of 268 people attended the show. The school collected $1594 in ticket sales. Which system of linear equations can be used to find how many student tickets were sold?
Click here to see answer by MathTherapy(10552)  |
Question 1117047: One of the tables represents y as a function of x. Which table is it?
A. x - -8,-11,-14,-8
y - -4,-7,-10,-13
B. x- -17,-11,-14,-17
y- -4,-7,-10,-13
C. x- -8,-11,-14,-17
y- -4,-7,-4,-13
Click here to see answer by Boreal(15235)  |
Question 1116920: Given the lines 3x-2y-24=0 and 4x+7y=-26 find
a)the point on the y-axis that is collinear with the point of intersection, P, if the line has a gradient of 2.
b)the general equation of a line passing through P and (3,-5)
Click here to see answer by Alan3354(69443)  |
Question 1117102: Archeologists find pottery fragments and shell beads in an ancient site. There are 98 objects in all. There are 94 more pottery fragments than shell beads. Which system of linear equations can be used to find the number of fragments and beads.
Click here to see answer by ikleyn(52781)  |
Question 1117103: A yearlong study was done on the gases released by a power plant. A scientist measured the amount of two important gases. He found that there was 21 times as much sulfur dioxide released as nitrogen dioxide. At the end of the year, the total weight of the two gases was calculated. There were 10,000 more tons of sulfur dioxide than nitrogen dioxide. How many tons of nitrogen dioxide were released during the study?
Click here to see answer by ikleyn(52781)  |
Question 1117108: Two printing presses are available to print the daily college newspaper. If only one press is used, it takes the older press twice as long to print an edition as it takes the newer press. If the two presses together can print an edition in 3 hours, how long would it take for each press alone to print an edition?
Click here to see answer by ikleyn(52781)  |
Question 1117112: A car left the town at a constant speed of 60 kph. 2 hours later, a policeman on a motorcycle at a constant speed of 80 kph also left the town and pursued the car. How long did it take the motorcycle to overtake the car? How far did the motorcycle travel?
Click here to see answer by greenestamps(13200)  |
Question 1117246: The relationship between antioxidant food consumption per day in cups and the BMI of an individual is modeled by the following line of best fit: y = -0.1x + 22. Interpret the slope and intercept of the trend line within the context of the data.
Click here to see answer by Fombitz(32388)  |
Question 1117246: The relationship between antioxidant food consumption per day in cups and the BMI of an individual is modeled by the following line of best fit: y = -0.1x + 22. Interpret the slope and intercept of the trend line within the context of the data.
Click here to see answer by josgarithmetic(39617) |
Question 1117365: The vertices of triangle OAB are the points O (0,0), A (0,2) and B (3,-1),
a) The point S is on AB such that OS is perpendicular to AB. Find the coordinates of S, and show this point on your diagram.
b) Find the area of triangle OAB.
c) The line through the point B, perpendicular to OA, meets OS produced at T. Find the coordinates of T.
Click here to see answer by solver91311(24713)  |
Question 1117361: The vertices of triangle OAB are the points O (0,0), A (0,2) and B (3,-1)
a) the point S is on AB such that OS is perpendicular to AB. Find the coordinates of S
b) find the area of triangle OAB
c) the line through the point B, perpendicular to OA, meets OS produced at T. Find the coordinates of T
Click here to see answer by greenestamps(13200)  |
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