Proportional Relationships
Max can jog 5/6 of a mile in 15 minutes. What is his average SPEED PER HOUR?
3/12 miles per hour
Gas was $1.50 per gallon in the year 2000. Suppose gas was $3.30 per gallon today, what is the percent in crease in the cost of gas?
120%
How do I know whether my answer is positive or negative when I add, subtract, multiply, or divide integers?
List the rules for adding/subtracting and multiplying/dividing.
Adding and subtracting = absolute value
multiply/divide = same sign is positive, different signs is negative
Write -5/6 as a decimal.
-.83 repeating
There are seven apples and you take away three of them. How many apples do you have?
3
7.5 miles per hour
Cayden wants to buy sports equipment that costs $140. The sales tax is 5.75%. What is the total cost of the equipment?
$148.05
Evaluate x - y if x = -23 and y = 19
- 42
-0.25 + 3 and 1/6 + 2 and 1/12
5
What is the maximum number of times you can subtract five from 25?
Once
After that, 25 becomes 20 and you are not subtracting from 25 anymore!
A solution calls for 35 parts salt to 1000 parts water. Dom used 7 tablespoons of salt and 200 tablespoons of water.
Is this is a proportional relationship?
Proportional!
$141.60
With integer chips, show the work and answer to this problem:
(-4) - 5
see response
1/2 (a)(b)
a = 1 and 3/7
b = -4/9
-20/63
I appear twice in the morning and twice in the evening. But I only appear once at night. What am I?
The letter N
A mechanic charges $270 for 5 hours of work. Write proportional relationship equation to compare the number of hours worked to the cost.
Y = 54x
A tv at Best Buy costs $412. It is on sale for 20% off. One day, you go the store and its on sale for additional 20% off the sale price. What is the final cost of the tv?
$263.68
bXd divided by a + c
a = -2, b = 3, c = -12, d = -4
-6
-4 and 2/5 divided by -2 and 14/15
1.5
Mr. Blue lives in the blue house. Mrs. Pink lives in the pink house and Mr. Purple lives in the purple house. So, who lives in the white house?
The President of the United States :)
For every three girls taking classes at a martial arts school, there are 4 boys who are taking classes. If there are 236 boys taking class, predict the number of girls taking classes at the school.
177 girls
Write the formula for each type of problem on your board with NO ERRORS.
Simple interest, commission, percent error
THEN
Define what interest is.
See responses
w divided by x(y) + y - z3
W = 36, x = -6, y = -1, z = -2
13
2/5 (x+y) + z
x = 7/8, y = -1/4, z = -2/3
-5/12
Two mothers and two daughters each had one egg for breakfast, but they only ate three eggs in total. How is this possible?
The answer is that there are only three family members eating breakfast: a grandmother (also a mother), a mother (also a daughter), and a daughter.