Subtract.21 - (-7)
A. 14
B. -28
C. -14
D. 28
Answer: D
Mathematics
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Provide an appropriate response.Use the strategy of writing equations to justify that if y = 2x and z = y + 5, then z is greater than x.
What will be an ideal response?
Mathematics
Provide an appropriate response. Find x if the distance between the points (x, 5) and (2, -3) is 10.
A. 4 or 0 B. 8 or -4 C. 11.798 or -7.798 D. 6 or -6
Mathematics
Evaluate the expression.-
A. ±20 B. -20 C. 20 D. 0
Mathematics
Use the determinant feature of a graphing calculator to solve the system by Cramer's rule . (Round to one decimal place.)1.5x + 3.1y - 2.3z + 0.6w = 2.76.1x - 0.5z - 3.4w = 0.811.5y - 2.2w = 04.0x + 3.0y - 2.1z = 9
A. {(4.3, 1.3, 4.9, 6.7)} B. {(3.6, 1.1, 4.1, 5.6)} C. {(3.2, 1.0, 3.7, 5.0)} D. {(7.9, 2.4, 9.0, 12.3)}
Mathematics