Solve the problem.The temperature at the South pole was -23° at 8 am. At 3 pm, it was 27°. By how many degrees did the temperature rise?
A. by 4°
B. by -4°
C. by -50°
D. by 50°
Answer: D
Mathematics
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Solve the problem.Which of the following four graphs is a tree?
A. Graph 2 and Graph 3 B. Graph 2 and Graph 4 C. Graph 1 and Graph 4 D. Graph 1 and Graph 3 E. none of these
Mathematics
A. A(6, -4); B(1, -1) B. A(-6, 4); B(0, 1) C. A(6, 4); B(0, -1) D. A(6, 4); B(0, 1)
Mathematics
Factor the trinomial, if possible.10m2 + 37mn + 30n2
A. (2m + 5n2)(5m + 6) B. (2m + 5n)(5m + 6n) C. (2m - 5n)(5m - 6n) D. (2m + 6n)(5m + 5n)
Mathematics
Solve the problem.A student takes out two loans totaling $12,000 to help pay for college expenses. One loan is at 4% simple interest, and the other is at 10% simple interest. The first-year interest is 
. Find the amount of the loan at 10%.
A. $200 B. $2000 C. $10,000 D. $400
Mathematics