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Questions (147)
Britney is buying a shirt and a hat at the mall. The shirt costs $30.79, and the hat costs $19.75. If Britney gives the sales
1 answer
13 views
Britney is buying a shirt and a hat at the mall. The shirt costs $30.79, and the hat costs $19.75. If Britney gives the sales
1 answer
13 views
455 is what percent of 700?
1 answer
11 views
What is 28% of 575?
1 answer
11 views
What is 61% of 300?
1 answer
11 views
540 is what percent of 750?
1 answer
13 views
900 students attend Ridgewood Junior High School. 2% of students bring their lunch to school everyday. How many students brought
1 answer
11 views
There are 180 students in the seventh grade, and 20% are in the Environmental Club. How many students are in the Environmental
1 answer
9 views
4800 people attended a football game. If 10% of the people who attended were teenagers, how many teenagers attended the game?
1 answer
11 views
Caroline misses 20% of the free throws she attempts in a season. How many total free throws did she attempt if she missed 69?
1 answer
12 views
All students in Ridgewood Junior High School either got their lunch in the school cafeteria or brought it from home on Tuesday.
1 answer
13 views
(13x + 9y) + (38x + 33y)
4 answers
79 views
$6.50(c + 18) = $6.50c + $117.00
1 answer
27 views
(7x + 8) + (15 - 7x)
1 answer
22 views
8g - g = 7g
1 answer
23 views
8(5x + 1) + 3(9 - x)
1 answer
21 views
rewrite 4/10 : 1/25 as a unit rate
1 answer
20 views
Find a ratio equivalent to whose second quantity is 1.
1 answer
18 views
Lin got a $80 gift card to an online music store. She uses the gift card to buy an album for $9.99. She also wants to use the
1 answer
18 views
Write an equation and solve.
Travis buys a new deep freezer. The manual tells him the temperature will drop 12 degrees every hour
1 answer
9 views
Write an equation and solve.
You buy five books that are equal in price for $17.50 and a DVD for $8. Your total comes to $25.50.
1 answer
7 views
Write an equation and solve.
A group of friends paid $7 each to play a round of golf. It also cost $12 to rent a golf cat. As a
1 answer
12 views
You are driving to visit a friend in another state who lives 700 miles away. You are driving 65 miles per hour and have already
1 answer
10 views
3
x−7 =6
3 answers
9 views
3=
2 3 (7x−4)
1 answer
26 views
A teacher asked her students to design a cold pack. The desired criteria and constraints for the cold pack are as follows:
it
1 answer
11 views
Rodrigo is using the design process to make a device that will cool a drink without ice or electricity. His first prototype was
1 answer
17 views
A teacher asked her students to design a hot pack. The desired criteria and constraints for the hot pack are as follows:
its
1 answer
7 views
The diagram below shows a hand warmer. It uses a controlled burn of a type of lighter fluid called naphtha.
The device has a
1 answer
13 views
An engineer is designing a process to cool hot water from a power plant before returning the water to the environment. His plan
1 answer
11 views
Self-heating cans use the concept of an interior heating vessel that is able to warm up food. The diagram below shows a model of
1 answer
20 views
When a strip of zinc metal is added to a test tube of hydrochloric acid, the liquid forms bubbles, and the test tube feels hot.
1 answer
12 views
Cold packs can be used to treat sprained ankles and similar injuries. A cold pack is activated by breaking a barrier within the
1 answer
17 views
In a chemical reaction, the reactants are substances that undergo the reaction, and the products are substances that are formed
1 answer
16 views
9
Consider the chemical reaction represented below. CH4 + 2O2 CO2 + 2H2O + Heat Which of the following statements about this
1 answer
16 views
A student has a test tube that contains 50 mL of water. She wants to add a substance to the water that will cause the test tube
1 answer
9 views
Hot packs can be used to comfort sore muscles and similar conditions. A hot pack is activated by breaking a barrier on the
1 answer
11 views
Refrigerators and air conditioners use a substance known as a "refrigerant" to absorb heat. Some of the first cooling systems
1 answer
7 views
"Twenty-eight is more than four times another number" can be shown by the inequality 28 > 4n. what are all possible values of n?
1 answer
9 views
8(x - 20) = 304
1 answer
8 views
Three times William's age, w, is less than his cousin Sandra's age, 15. what are three possible ages of william
1 answer
8 views
x - 30 = 65
1 answer
7 views
−17=
3 2 r
1 answer
10 views
minus, 4, left parenthesis, 8, f, plus, g, right parenthesis, plus, 9, g, minus, 5, left parenthesis, minus, 2, g, plus, 6, f,
1 answer
7 views
10, left parenthesis, 7, p, plus, 6, right parenthesis, minus, 5, left parenthesis, 5, p, plus, 4, right
1 answer
7 views
examples of chemical changes
1 answer
12 views
definition of a physical change
1 answer
10 views
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