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goldfiish [28.3K]
2 years ago
8

12 of the students in a Geometry class passed a Geometry test. If these students are 80% of all the students in the class, how m

any students are in this Geometry class?
Mathematics
1 answer:
VikaD [51]2 years ago
6 0

Answer:

15

Step-by-step explanation:

12/8 =1.5 * 10 =15

You might be interested in
~~~ 30 POINTS ~~~
trasher [3.6K]
<span>1)   3x-2=x+10


</span><span>Now, lets solve this step-by-step.
</span><span>
3x - 2 = x + 10
-x             -x
</span><span>
</span><span>3x - x = 2x                                2x - 2 = 10
</span><span>
</span><span>2x - 2 = 10
</span>2x - 2+2 = 10+2          The inverse operation helps isolate the variable. 
<span>
2x = 12

2x/2 = 12/2

x = 12/2
x = 6</span><span>

Answer: x = 6

2) x + 4 = 19 - 2x </span>

We can solve this much faster

x + 4 = 19 - 2x
                  +2x

x+2x = 3x

3x + 4 = 19
      -4     -4

19-4 = 15

3x= 15
3x/3 = 15/3
x= 5

Answer: x = 5

3) 
<span>8x - 20 = x + 15

Much faster now!!

8x - 20 = x + 15
               -x
8x-x = 7x

7x - 20 = 15
      +20   +20
15+20 = 35

7x = 35
7x/7 = 35/7
x = 35/7
x = 5

Answer: x= 5</span>
3 0
3 years ago
Read 2 more answers
What is 2.5/10 (fraction) simplified?
sladkih [1.3K]

Answer:

-1

—— = -0.25000

 4            

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Pls answer now<br> i gave you brainlest
slava [35]

1) A

2) B

3) C

4) C

5) D

5 0
2 years ago
If <br>4x+(y+x)=180<br>what is x? what is y?​
uysha [10]

Step-by-step explanation:

4x+(y+x)=180\\\\\text{Solve for}\ x:\\\\4x+y+x=180\qquad\text{combine like terms}\\\\(4x+x)+y=180\qquad\text{subtract}\ y\ \text{from both sides}\\\\5x=180-y\qquad\text{divide both sides by 5}\\\\\dfrac{5x}{5}=\dfrac{180-y}{5}\\\\\boxed{x=\dfrac{180-y}{5}}\\\\\text{Solve for}\ y:\\\\5x+y=180\qquad\text{subtract}\ 5x\ \text{from both sides}\\\\\boxed{y=180-5x}

7 0
2 years ago
Identify the law illustrated by: 4(3x-7) is equivalent to 12x-28.
11Alexandr11 [23.1K]

Answer:

Distributive law of multiplication

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
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