Solve the problem.On part of a scenic tour of underground caves, Dave and Neil started at an elevation of 56 feet below sea level. They then rose 25 feet. Represent their distance below sea level as a signed integer.
A. -81 feet
B. 31 feet
C. 81 feet
D. -31 feet
Answer: D
Mathematics
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Use the distributive property to multiply. Then, if possible, simplify the resulting expression.4(a + b)
A. 4ab B. 8ab C. 4a + 4b D. 4a + b
Mathematics
Evaluate.cos(cos-1 0.3796 + cos-1 0.6533) (Round to the nearest ten-thousandth when necessary.)
A. -0.317 B. 0.8918 C. -0.4525 D. 0.9485
Mathematics
Write the expression in the standard form a + bi.(-4 - 7i)(2 + i)
A. -1 + 10i B. -15 + 10i C. -1 - 18i D. -15 - 18i
Mathematics
Find the x- and y-intercepts and write them as ordered pairs. (Do not graph.)-2x + y = 8
A. x-intercept: (0, -8); y-intercept: (0, -8) B. x-intercept: (- 4, 0); y-intercept: (0, 8) C. x-intercept: (-8, 0); y-intercept: (-8, 0) D. x-intercept: (8, -8); y-intercept: (-8, 8)
Mathematics