| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.08 |
| Score | 0% | 62% |
\({b + c \over a} = {b \over a} + {c \over a}\) defines which of the following?
distributive property for division |
|
commutative property for multiplication |
|
distributive property for multiplication |
|
commutative property for division |
The distributive property for division helps in solving expressions like \({b + c \over a}\). It specifies that the result of dividing a fraction with multiple terms in the numerator and one term in the denominator can be obtained by dividing each term individually and then totaling the results: \({b + c \over a} = {b \over a} + {c \over a}\). For example, \({a^3 + 6a^2 \over a^2} = {a^3 \over a^2} + {6a^2 \over a^2} = a + 6\).
How many 1 gallon cans worth of fuel would you need to pour into an empty 4 gallon tank to fill it exactly halfway?
| 2 | |
| 6 | |
| 2 | |
| 9 |
To fill a 4 gallon tank exactly halfway you'll need 2 gallons of fuel. Each fuel can holds 1 gallons so:
cans = \( \frac{2 \text{ gallons}}{1 \text{ gallons}} \) = 2
Solve 5 + (5 + 4) ÷ 4 x 2 - 32
| \(\frac{6}{7}\) | |
| \(\frac{1}{2}\) | |
| 1\(\frac{2}{3}\) | |
| \(\frac{2}{3}\) |
Use PEMDAS (Parentheses, Exponents, Multipy/Divide, Add/Subtract):
5 + (5 + 4) ÷ 4 x 2 - 32
P: 5 + (9) ÷ 4 x 2 - 32
E: 5 + 9 ÷ 4 x 2 - 9
MD: 5 + \( \frac{9}{4} \) x 2 - 9
MD: 5 + \( \frac{18}{4} \) - 9
AS: \( \frac{20}{4} \) + \( \frac{18}{4} \) - 9
AS: \( \frac{38}{4} \) - 9
AS: \( \frac{38 - 36}{4} \)
\( \frac{2}{4} \)
\(\frac{1}{2}\)
What is the next number in this sequence: 1, 4, 7, 10, 13, __________ ?
| 16 | |
| 12 | |
| 11 | |
| 22 |
The equation for this sequence is:
an = an-1 + 3
where n is the term's order in the sequence, an is the value of the term, and an-1 is the value of the term before an. This makes the next number:
a6 = a5 + 3
a6 = 13 + 3
a6 = 16
The total water usage for a city is 10,000 gallons each day. Of that total, 27% is for personal use and 44% is for industrial use. How many more gallons of water each day is consumed for industrial use over personal use?
| 11,200 | |
| 3,200 | |
| 1,000 | |
| 1,700 |
44% of the water consumption is industrial use and 27% is personal use so (44% - 27%) = 17% more water is used for industrial purposes. 10,000 gallons are consumed daily so industry consumes \( \frac{17}{100} \) x 10,000 gallons = 1,700 gallons.