Solve the problem. Round to an appropriate number of significant digits.Twice the water flow in the hot-water pipe is the same as three times the flow in the cold-water pipe. The combined flow is 1300 ?/hr. What is the flow in each pipe?
A. 780 ?/hr hot, 520 ?/hr cold
B. 433 ?/hr hot, 650 ?/hr cold
C. 520 ?/hr hot, 780 ?/hr cold
D. 650 ?/hr hot, 433 ?/hr cold
Answer: A
Mathematics
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Divide the polynomial by the monomial.
A. 9x6 - 8x3 - 7 B. 9x9 - 8x6 - 7x3 C. 9x6 + 8x3 + 7 D. 36x6 - 32x3 - 28
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Write the number in expanded form.7090
A. 709 thousands = 709,000 B. 7 ten thousands + 9 thousands = 70,000 + 9000 C. 7 thousands + 9 tens = 7000 + 90 D. 7 hundreds + 9 ones = 700 + 9
Mathematics
Solve.
x2 = 6
A. No solution
B. 294, -294
C. 7
, - 7
D. 
, - 
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Triangle ABC is a right triangle with sides of lengths a, b, and c and a right angle at C. Find the indicated trigonometric function value of A. Rationalize denominators containing radicals.b = 
, c = 8; find tan A.
A. 
B. 
C. 
D. 
Mathematics