1). Last week, the ratio of laptops to desktops sold at a computer store was 2:3. Eighteen desktop models were sold. How many laptop models were sold?
A: 12 laptop models were sold.
2). Find the unite rate: twenty-six crackers contain 150 Calories.
A: 6
3). Solve the proportion: -18/n = 9/2
A: -4
4). Solve the proportion: 4/12 = r +2/ 16
A: 40/12?
5). Find each value. Round to the nearest tenth if necessary: find 40% of 25.
A: 10
6). Find each value. Round to the nearest tenth if necessary: 35 is what percent of 70?
A: 50%
7). Find each value. Round to the nearest tenth if necessary: 16 is 80% of what number?
A: 20
8). A volunteer at the zoo is responsible for feeding the animals in 15 exhibits in the reptile house. This represents 20% of the total exhibits in the reptile house?
A: ?
9). Solve h + p = 3(k-8) for k.
A: ?
10). Solve x/r = v for x.
A: ?
11). The absolute value of r = 7
A: 7?
12). The absolute value of 2x - 4 = 0
A: No solution.
13). Collette is a contestant on a game show. She can win a car if she can guess the price of the car within $725. The price of the car is $16, 785. Write and solve an absolute-value equation to find the values for the maximum and minimum price that Collette can guess to win the car.
A: ?
Can anyone evaluate and assist me?
*evaluate this
I can't check all of them, but I'll help you with a couple of them.
8). A volunteer at the zoo is responsible for feeding the animals in 15 exhibits in the reptile house. This represents 20% of the total exhibits in the reptile house?
0.2x = 15
x = ?
10). Solve x/r = v for x.
x = rv
8). 75?
8). The number of total exhibits in the reptile house can be found by dividing the 15 exhibits that the volunteer is responsible for by 20% (or 0.20).
To find the total number of exhibits:
15 exhibits / 0.20 = 75 exhibits
So, there are a total of 75 exhibits in the reptile house.
9). To solve the equation h + p = 3(k-8) for k, we can start by isolating the variable k.
First, distribute the 3 on the right side of the equation:
h + p = 3k - 24
Next, move the -24 to the left side of the equation:
h + p + 24 = 3k
Finally, divide both sides of the equation by 3:
(k) = (h + p + 24) / 3
So, the solution for k is (h + p + 24) divided by 3.
10). To solve x/r = v for x, we can start by isolating the variable x.
First, multiply both sides of the equation by r:
x = r * v
So, the solution for x is r multiplied by v.
13). To write and solve an absolute-value equation to find the values for the maximum and minimum price that Collette can guess to win the car, we can use the following equation:
|price - $16,785| ≤ $725
This equation states that the absolute difference between the price of the car and $16,785 should be less than or equal to $725 for Collette to win the car.
To solve this equation:
1. Subtract $16,785 from both sides:
|price - $16,785| - $16,785 ≤ $725 - $16,785
|price - $16,785| ≤ -$16,060
2. Since the absolute value cannot be negative, we can disregard the negative sign:
price - $16,785 ≤ $16,060
3. Add $16,785 to both sides:
price ≤ $16,060 + $16,785
price ≤ $32,845
So, the maximum price that Collette can guess to win the car is $32,845.