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ale4655 [162]
3 years ago
5

3х +7 2х + 3 x= ? please help i’m almost done with school

Mathematics
1 answer:
Afina-wow [57]3 years ago
3 0

Answer:

34

Step-by-step explanation:

Add them together

5x+10=180

5x+10-10=180-10

5x=170

5x/5=170/5

x=34

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Write a proportion to find how many points x a student needs to score on a test worth 50 points to get a test score of 78%.
olganol [36]
The answer is:  "39 points" .
_______________________________________________________
Explanation:
_______________________________________________________
" x/ 50 = 78/100 " ;   in which "x" equals the number of points needed.

_______________________________________________________

To solve for "x" ; 
_______________________________________________________

Look at the denominators:  50 * (what value?) = 100.

→ "100 ÷ 50 = 2" .

→ So;  "50 * 2 = 100" ; 

So, let us look at the numerators:

x * 2 = 78 ; 

↔  2x = 72 ; 

Divide each side of the equation by "2" ; to isolate "x" on one side of the equation ; and to solve for "x" ;
_____________________________________________
 →  78 ÷ 2 = 39 ;

The answer is:  "39 points" .
_____________________________________________


4 0
3 years ago
Which pair of triangles can be proven congruent by using the HL theorem?
kaheart [24]
Answer: figure C.

Explanation:

The HL theorem is the hypotenuse leg theorem.

The HL theorem is referred to the congruency of right triangles.

This theorem states that two right triangles that have a congruent hypotenuse and a corresponding, congruent leg are congruent triangles.

Figure A shows the congruency of two pairs of legs. So, this is not the answer.

Figure B shows the congruency of one pair of legs and one pair of angles. So, this is not the answer.

Figure C. shows the congruency of the two hypotenuses and one pair of legs. So, this is the righ answer.
4 0
4 years ago
Read 2 more answers
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Alexxandr [17]

Answer:

the answer will be y = 6

hope this helps :)

4 0
4 years ago
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X=18

Step-by-step explanation:

5 0
3 years ago
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