Solve the problem.Pennies are packaged 50 in a roll. A mother gave her son 63 pennies for his bank and had 37 pennies left over. How many rolls of pennies did she use?

A. 3 rolls
B. 5 rolls
C. 4 rolls
D. 2 rolls


Answer: D

Mathematics

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Solve the problem.The resistance R produced by wiring resistors of R1  and R2  ohms in parallel can be calculated from the formula If R1  and R2  are measured to be 3 ohms and 4 ohms respectively and if these measurements are accurate to within 0.05 ohms, estimate the maximum possible error in computing R.

A. 0.015 B. 0.020 C. 0.031 D. 0.026

Mathematics

Solve the problem.Show that a planet in a circular orbit moves with constant speed.

What will be an ideal response?

Mathematics

Provide an appropriate response.If X is normally distributed with ? = 20 and ? = 5, find x0 such that P(X > x0) = 0.025.

A. 29.8 B. 31.6 C. 27.2 D. 21.96 E. 18.6

Mathematics

Your budget requires you to earn at least $213 per week. You work two part-time jobs. One is at a grocery store, which pays $10 per hour, and the other is mowing lawns, which pays $14 per hour. Let x represent the number of hours you work at the grocery store and let y represent the number of hours you work at mowing lawns. Write a linear inequality that represents the different numbers of hours you can work at each job in order to meet your budget requirements.

A.
B.
C.
D.
E.

Mathematics