Solve the problem.A chemist needs 170 milliliters of a 43% solution but has only 27% and 61% solutions available. Find how many milliliters of each that should be mixed to get the desired solution.
A. 70 mL of 27%; 100 mL of 61%
B. 100 mL of 27%; 70 mL of 61%
C. 90 mL of 27%; 80 mL of 61%
D. 80 mL of 27%; 90 mL of 61%
Answer: C
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m. Find the body's acceleration each time the velocity is zero.
A. a(4) = 24 m/sec2, a(8) = 4 m/sec2 B. a(2) = -6 m/sec2, a(4) = 6 m/sec2 C. a(2) = 0 m/sec2, a(4) = 0 m/sec2 D. a(2) = 6 m/sec2, a(4) = -6 m/sec2
Provide an appropriate response.A plumber is installing a drainage pipe around the entire 212 feet of the perimeter of a rectangular house. If the width of the ditch is 38
feet, write an equation and solve to find the length of the ditch.
Fill in the blank(s) with the appropriate word(s).
Solve the problem.The function defined by f(x) = x + 2 was used to encode the following message: 15 3 22 10 9 7 16 11 23 21using the alphabet coding method (A = 1, B = 2, C = 3, ...). Find the inverse and decode the message.
What will be an ideal response?
Multiply.-9(5x - 6y + 6)
A. -45x - 54y - 54 B. -45x - 6y + 6 C. -45x + 54 + 6 D. -45x + 54y - 54