Solving Quadratic Equations: Quadratic Formula — Cumulative exam Answers
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A company sells T-shirts for $11 each and sweatshirts for $19 each.The number of T-shirts sold was 10 fewer than three times the number of sweatshirts sold. The T-shirts and sweatshirts sold for a total of $1,970. How many T-shirts were sold?
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Raj tried to solve the system below. Raj’s Work What error did Raj make?
A
Raj forgot to multiply the value of x by 9 when solving for the value of y.B
Raj subtracted 120 from both sides when he solved for the value of x.C
Raj forgot the negative sign when substituting –15 + 9x for y.D
Raj found the value of –y instead of y.23
Which statement describes the system of equations?
A
The system has infinitely many solutions.B
The system has no solution.C
The system has one solution .
D
The system has one solution .
24
Solve x2 – 8x = 20 by completing the square. Which is the solution set of the equation?
A
{–22, 14}B
{–14, 22}C
{–10, 2}D
{–2, 10}25
Which expression is equivalent to ?
A
mc026-2.jpg
B
mc026-3.jpg
C
mc026-4.jpg
D
mc026-5.jpg
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