Solve the mixture problem.It is necessary to have a 40% antifreeze solution in the radiator of a certain car. The radiator now has 60 liters of 20% solution. How many liters of this should be drained and replaced with 100% antifreeze to get the desired strength?
A. 15 L
B. 20.0 L
C. 24 L
D. 30 L
Answer: A
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You will select a card from three hats. There are 2 cat cards and 1 dog cards in Hat 1, 4 cat, and 3 dog cards in Hat 2, and 5 cat, and 4 dog cards in Hat 3. What is the probability of selecting a cat card from Hat 1, a cat card from Hat 2, and a dog card from Hat 3? ?
A.
?
B.
?
C.
?.08 rounded to the nearest 1/100th.
D.
?.07 rounded to the nearest 1/100th.
E.
?
Solve the problem.Assume that a person spins the pointer and is awarded the amount indicated by the pointer. Determine the person's expectation.
A. $7.25 B. $5.25 C. $10.50 D. $7.50
Factor the trinomial.10x2 + 23x + 12
A. (10x + 1)(x + 12) B. (10x + 3)(x + 4) C. (2x + 3)(5x + 4) D. (2x - 3)(5x - 4)
Solve the equation for real values of the variable by factoring.
?
?
What will be an ideal response?