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tigry1 [53]
3 years ago
12

80% of the class finished a project early. If 28 students finished early, how many students are in the class

Mathematics
1 answer:
Snowcat [4.5K]3 years ago
4 0
I would assume around 34 sorry if i’m wrong
You might be interested in
Find the area of the trapezoid
nata0808 [166]

Answer:

15 + 23 = 38

38 x 9 = 342

342 x 1/2 (basically just dividing by 2) 171

Step-by-step explanation:

Formula of a trapezoid:

B1(base 1) + B2(base 2) x H(height) x 1/2(basically just dividing by 2)

In this case,

12 and 23 are your bases, 9 is your height.

7 0
3 years ago
Plot the following points to create a rectangle. Find the missing vertex. (4,0);(-6,0);(-6,-4)
Sveta_85 [38]

Answer:

(4,-4)

Step-by-step explanation:

7 0
3 years ago
What is 25% Of 30% Of 400?
marta [7]

Answer:

25% of 30% of 400 = 30

33% decrease in value

Step-by-step explanation:

You can either get 30% of 400 first then 25% of 400 or you can get the total percentage of 400.

Method 1:

30% of 400 = 0.3 of 400 = 0.3 * 400 = 120

25% of 120 = .25 of 120 = .25 * 120 = 30

Method 2:

30% of 25% = 0.3 * 0.25 = 0.075 = 7.5% of 400

7.5% of 400 = 0.075 of 400 = 0.075 * 400 = 30

5.) To find the percentage  of the new price, you can build the equation below.

\frac{new price}{original price} = \frac{percent}{100}

\frac{200,000}{300,000}  = \frac{x}{100}

20,000,000 = 300,000x

x = 66.667

The percentage decrease in price is then 100% of the original price - 66.667% of the original price = 100% - 66.67% = 33.33% = 33% decrease.

3 0
3 years ago
A class has 6 boys and 15 girls.What is the ratio of boys and girls?
Sidana [21]
So if boys is 6 and girls is 15 it would be 6/15, but that can be simplified to 2/5.
8 0
3 years ago
Solve this system by substitution. y = 5x - 15 y = 2x - 6 *Remember to write your answer as a coordinate point (x,y Solve this s
oksano4ka [1.4K]
5x - 15 = 2x - 6
3x = 9
x = 3
Y = 5(3) - 15
Y = 0
(3,0)
7 0
3 years ago
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