What is the value of r in the following equation?29 + r = 420
Answer(s): C
29 + r = 42029 + r − 29 = 420 – 29 r = 391
To begin making her soup, Jennifer added four containers of chicken broth with 1 liter of water into the pot. Each container of chicken broth contains 410 milliliters. How much liquid is in the pot?
Answer(s): B
410 ml × times 4 containers = 1640 ml Change to liters: 1640 ÷ 1000 = 1.64 Add the liter that was already in the pot: 1.64 + 1 = 2.64 liters
Two even integers and one odd integer are multiplied together. Which of the following could be their product?
Answer(s): D
Integers include all positive and negative whole numbers and the number zero. The product of three integers must be an integer, so you can eliminate any answer choice that is not a whole number: choices (3.75) and (16.2). The product of two even integers is even. The product of even and odd integers is even. The only even choice is 24.
What is the product of 0.34 × 0.06?
Answer(s): A
The product of 0.34 and 0.06 is 0.0204. Remember to count the number of places to the right of the decimal.
If 8 people can eat 6 bags of chips, how many people will it take to eat 15 bags of chips?
Use a proportion to solve the problem. 8/6 = x/15, 60 = 3x, x = 20.
Express 8% as a fraction.
8% = 8/100 = 2/25.
Which algebraic expression best represents the following statement: the number of books Brian read over the summer (B) is 2 less than 3 times the number of books his brother Adam read over the summer (A)?
Stefan’s scores on his English essays were 75, 65, 80, 95, and 65. What is the average of his test scores?
(75 + 65 + 80 + 95 + 65) / 5 = 76.
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