Simplify the following by combining like terms.2x7 + 6x3 + 5x7
A. 13x17
B. 7x7 + 6x3
C. 13x3
D. cannot be simplified
Answer: B
Mathematics
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Find the probability.A die is rolled 20 times and the number of twos that come up is tallied. Find the probability of getting more than three twos. Round to the nearest thousandth when necessary.
A. 0.433 B. 0.905 C. 0.564 D. 0.403
Mathematics
Determine if the given ordered triple is a solution of the system.3x + 3y + z = -145x - 4y - z = -83x + y + 4z = -7(-3, -2, 1)
A. No B. Yes
Mathematics
Express the sum using summation notation. Use 1 as the lower limit of summation and i for the index of summation.
- 
+ 
- ... + (-1)(11 + 1) 
11
A. 
i
B. 
i
C. 
D. 
i
Mathematics
Write the polynomial in completely factored form.
What will be an ideal response?
Mathematics