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kupik [55]
3 years ago
9

Four fifths of 30 students finished the test early .How may students finished the test early?​

Mathematics
2 answers:
andrezito [222]3 years ago
4 0

Answer:

24

Step-by-step explanation:

count by sixes. Good luck

Alenkasestr [34]3 years ago
4 0

Answer:

24

Step-by-step explanation:

(4/5)*30=24

4/5=.8

(.8)*30=24

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Someone know how to do this?: 6x2+18x=0
Crazy boy [7]
The answer to the question is: Yes.

Explanation:  It can be solved by following exactly the same procedures
that solved the other two questions that you posted within the past 15 minutes.

Since I'm here already, here is the solution to this one:

6x² + 18x = 0

Divide each side of the equation by 6 :

x² + 3x = 0

Factor the left side:

x(x+ 3) = 0

This statement is true if x=0 or if x=3.

The solution to this one is even the same as the solution to the last one you posted.
You really ought to take a break, go back, review the solutions you've been given,
and try to solve a few on your own.
4 0
3 years ago
A team is selling discount cards as a fundraiser. The table shows the number of cards sold and the remaining amount of money nee
kondor19780726 [428]

Answer: negative.


Step-by-step explanation:

We know that the slope of the line \frac{\text{change in y}}{\text{change in x}}

Therefore, the slope for the given data=\frac{y_2-y_1}{x_2-x_1}

\Rightarrow\ Slope=\frac{795-875}{20-10}\\=\frac{-80}{10}\\=-8...,\text{which is negative.}

Hence, the word which describes the slope of the line representing the data in the table = negative.

8 0
3 years ago
Read 2 more answers
-5x - 2y = 13<br> -4x + y = 0<br> Solve by substation
kotegsom [21]

Answer:

(x,y)=(-1,-4)

Step-by-step explanation:

-4x + y = 0

+4x         +4x

y=4x

-5x - 2y = 13

+5x          +5x

-2y = 5x+13

-2(4x) = 5x+13

-8x=5x+13

-5x -5x

-13x/-13=13/-13

x=-1

Thus:

y=4x

y=4(-1)

y=-4

5 0
3 years ago
Solve the system of equations 2x-2y=-14 and 3x-y=-1 by combining the equations.
Veseljchak [2.6K]

The solution to the system of equations is x = 3 and y = 10

<h3>How to solve the equations?</h3>

The system is given as:

2x-2y=-14

3x-y=-1

Multiply (1) by 1 and (2) by 2

So, we have:

1(2x-2y=-14)

2(3x-y=-1 )

This gives

2x - 2y=-14

6x - 2y=-2

Subtract the equations

-4x = -12

Divide by -4

x = 3

Substitute x = 3 in 3x-y=-1

3(3)-y=-1

Evaluate

9 - y = -1

Solve for y

y = 10

Hence, the solution to the system of equations is x = 3 and y = 10

Read more about system of equations at:

brainly.com/question/12895249

#SPJ1

7 0
1 year ago
What is the median of the data set?
Artist 52 [7]

Answer:

11.7

Step-by-step explanation:

4 0
2 years ago
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