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Yanka [14]
2 years ago
13

Which equations represent valid proportions? Check all that apply.

Mathematics
1 answer:
vaieri [72.5K]2 years ago
5 0

Answer:

A and C.

Step-by-step explanation:

A. 4/18 = 6/27     2/9 = 2/9 (Correct)

B. 4/6 = 16/36     2/3 = 4/9 (Unequal)

C. 3/4 = 9/12     3/4 = 3/4 (Correct)

D. 5/9 = 8/12     5/9 = 2/3 (Unequal)

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The sum of the angle measures of a triangle is 180°. Find the value of x . Then find the angle measures of the triangle.
Lady bird [3.3K]

Answer:

Step-by-step explanation:

The sum of the angle measures of a triangle is 180°. Find the value of x . Then find the angle measures of the triangle.

find the value of x

x + 2x + x + 8 = 180

4x = 180 - 8

4x = 172

x = 172 : 4

x = 43

find angles

2x = 43 * 2

2x = 86°

-------

x = 43°

--------

x + 8 = 43 + 8

x = 51°

-----------------------

check

86 + 43 + 51 = 180°

the answer is good

6 0
2 years ago
Janine has job offers at two companies. One
finlep [7]

Answer: ?????

Step-by-step explanation: Are you finding who would have the most after a certain number of years have passed?

8 0
3 years ago
I need help with the steps. The answer is (5,2)
Elden [556K]

So with this, I will be using the substitution method. With the first equation, substitute (y+3) into the x variable and solve for y:

y+3+y=7\\2y+3=7\\2y=4\\y=2

Next, now that we have the value of y, substitute it into either equation to solve for x:

x+2=7\\x=5\\\\x=2+3\\x=5

<u>And this is how you get your final answer (5,2).</u>

5 0
4 years ago
Juana wants to use the numbers 8, 6, 3,
andrezito [222]
She can create 16 because there’s 4 numbers times the 4 digit code, she have 16 different possibilities of #s
7 0
3 years ago
When Helen jogs, every $20$ minutes she checks the total distance she traversed. One day, the first time she checked, Helen had
german
The difference between speeds, during the first 20 minutes and last 20 minutes, would be 4.3 miles. The key word here is difference which automatically tells us to subtract. In this case you would subtract 6.8 miles, the last 20 minutes, by 2.5 miles, the first 20 minutes. In the end, getting 4.3 miles. Hope this helps! :)
3 0
4 years ago
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