Posted by MzMaria on Tuesday, September 16, 2008 at 6:00am.
I need help with these algebra problems please.
1.Solve by using the substitution method.
a. 8x - 3y =-61
7x + 68 = y What is the solution system _____?
b. 4m + n =27
m - 2n = 9 What is the solution system_______?
c. 8x + 9y = -15
-6x + y = 19 What is the solution System______?
d. 6x + 6y = 36
-4x + y = 21 What is the solution system_______?
2. Solve using the elimination method.
a. x + 7y = 69
-x + 7y = 57 What is the solution system____?
b. 5x + 5y = -13
7x - 3y = 11 What is the solution system____?
c. 9x - 9y = 18
7y - 3x = -8 What is the solution system____?
d. 0.3x - 0.2y = 4
0.4x + 0.3y = -1 What is the solution system_____?
E. 0.05X + 0.25Y = 44
0.15X + 0.05Y = 48 What is the solution system____?
3. The Everton college store paid $1979 for an order of 49 calculators. The store paid $11 for scientific calculator. The others all graphing calculators cost the store $56 each. How man of each calculators were ordered.
The store ordered ____ scientific calculators and ____ graphing calculators.
4Hockey teams receive 2 points when they win and 1 point when they tie. One season a team won a championship with 63 points. They won 9 more games than they tied. How many wins and how many ties did the team have?
How many wins did the team have_____?
How many ties did the team have_____?
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