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adoni [48]
3 years ago
13

In a math class, 1/3 of the students fail a test,  if twelve students have failed the test, how many students are in the class?

Mathematics
1 answer:
musickatia [10]3 years ago
3 0
There would be 36 children in the class. What you would do is multiply twelve times 3 to get your answer. I hope I could be of assistance and please mark brainliest!
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A grocery store bought some mangoes at a rate of 5 for a dollar. They were separated into two stacks, one of which was sold at a
Alexus [3.1K]

Answer:

The ratio of the number of mangoes in the $3 stack to those in the $6 stack is 1 : 2

Step-by-step explanation:

Let the number of mangoes bought by the grocery store be n. Also let the number of mango sold for $3 in one stack be x and the number of mango sold for $6 in the second stack be y.

Therefore:

x + y = z                                  (1)

Also, the mangoes was sold at break even price, that is the cost of the mango and the price it was sold for was the same. Therefore:

Cost of buying = Price it was sold for

The cost of the mango = 5z and the price it was sold for = 3x + 6y

3x + 6y = 5z                            (2)

Substituting z = x + y in equation 1

3x + 6y = 5(x + y)

3x + 6y = 5x + 5y

6y - 5y = 5x - 3x

y = 2x

x / y = 1/ 2 = 1 : 2

The ratio of the number of mangoes in the $3 stack to those in the $6 stack is 1 : 2

8 0
3 years ago
What is the slope-intercept equation of the line below?
Kay [80]

Answer:

C

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, - 1) and (x₂, y₂ ) = (- 1, 1)

m = \frac{1+1}{-1-0} = \frac{2}{-1} = - 2

Note the line crosses the y- axis at (0, - 1) ⇒ c = - 1

y = - 2x - 1 → C

5 0
3 years ago
An individual went grocery shopping and bought a total of $69.50 in groceries. The individual had a coupon that would take $3.54
Sonbull [250]

The percentage off that the individual got off from his groceries is 5.09%

<h3>Calculating the percentage coupon on an item</h3>

Tax is the amount removed on a cost of an item. It is represented as a percentage.

Given the following parameters

total price of goods = $69.50

Discount = $3.54

<u>Determine the </u><u>percent off</u>

Percent off = discount/Total price * 100

Percent off = 3.54/69.50 * 100

Percent off = 354/69.50

Percent off = 5.09%

Hence the percentage off that the individual got off from his groceries is 5.09%

Learn more on percent discount here; brainly.com/question/24304697

#SPJ1

3 0
2 years ago
PLEASE HELP 20 POINTS
Tanzania [10]

The sinusoid makes a complete oscillation (i.e. 360°) every 3 seconds. So, in one second it makes 1/3 of a turn, leading to 360°/3 = 120°.


So, the correct answer is the last one.

7 0
3 years ago
4.22 next decimal in number
aliya0001 [1]

Answer:

4.23

Step-by-step explanation:

add 0.01

4 0
2 years ago
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