Multiply and simplify.(
+ 
)(
- 
)
A. 2x + 3y
B. 4x - 9y
C. 2x - 3y
D. 4x2 - 9y2
Answer: C
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Identify the property illustrated by the expression.-3(1 + 7) = -3 ? 1 + (-3) ? 7
A. commutative property of multiplication B. distributive property C. associative property of addition D. associative property of multiplication
Seven milligrams of a dye (D) are injected into a vein leading to an individual's heart. The concentration of the dye in the aorta measured at 2-second intervals is shown in the accompanying table. Use Simpson's rule and the formula
to estimate the person's cardiac output. Round the result to the nearest tenth.
t024681012141618202224c(t)002.16.48.46.65.33.41.10.80.30.10
A. 5.2 L/min B. 5.5 L/min C. 6.1 L/min D. 3.5 L/min
Complete the square to find the coordinates of the vertex for the given parabola.y2 + 2y + 9x + 28 = 0
A. Vertex: (-3, 2) B. Vertex: (1, -3) C. Vertex: (2, 1) D. Vertex: (-3, - 1)
Find ?y for the given values of x1 and x2.y = 4x + 3; x1 = 4.5, x2 = 4
A. 2 B. 4 C. -2 D. -8