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allochka39001 [22]
2 years ago
13

Please help i hate algebra this is so confusing 30 pts

Mathematics
2 answers:
jekas [21]2 years ago
7 0
Yeah that’s correct ...........///
Tom [10]2 years ago
3 0

you got it correct.............................

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Are triangles DEF and LNM similar if LN equals 5 MN equals 3 DE equals 10 and FE equals 6
melisa1 [442]

Answer:

D.  Yes by SAS Similarity Postulate

Step-by-step explanation:

This is the answer because if you flip triangle LNM around to shape the DEF.  Then you will see that:

1. angle D is congruent to angle L

2. angle E is congruent to angle N

3. angle F is congruent to angle M

4. angle E and N are both 90 degrees

Because (DE and LN) and (MN and FE) are similar and (E and N) are 90 degrees, then we do not need (FD and ML) to tell if triangle DEF and triangle LNM is similar or not. They are similar.

We next need to figure out if the triangles are similar by SSS (Side-side-side) Similarity Postulate or SAS (side-angle-side) Similarity Postulate.  The SAS Similarity Postulate states that if you have 2 similar sides and 1 congruent angle, then the two shapes are similar. Right now we have 2 similar sides in (DE and LN) and (MN and FE) and 1 congruent angle that are both 90 degrees. This follows all the rules of the SAS Similarity Postulate, so that means that these two triangles are similar by SAS Similarity Postulate.

4 0
3 years ago
Olivia goes shopping at the mall and buys a shirt that is on sale for 25% off. She also knows that the sales tax is 5%. If her f
Norma-Jean [14]

Answer:   The shirt originally cost 125 dollars.

Step-by-step explanation: The shirt on sale is 25% off. So first multiply 25 by 5 and you get 125. So 125 is the originall price. Her final cost is 25 dollars. Last step: 125 divided by 5 equals 25 dollars.

3 0
3 years ago
I don’t know how to explain on why the student was incorrect
Zolol [24]

Answer:

the constant proportionality means the ratio between two directly proportional quantities.

so the constant proportionality will be 7.5÷6=1.25 or 10÷8=1.25 or 12.5÷10=1.25

constant proportionality should be same all through because it's a constant

7 0
3 years ago
A triangle has sides measuring 2 inches and 7 inches. If x represents the
xz_007 [3.2K]

Answer:

its d.

Step-by-step explanation:

the other guy is wrong

3 0
3 years ago
Mr and mrs Gomez are buying carpet for their square shaped bedroom which measures 7 yd along each wall the carpet is $21 per squ
Andreas93 [3]

Answer:

Step-by-step explanation: The area of the bedroom is

A=7yd^2

 

The total cost is the sum of the price rates times this area.  

 

C=A•($21+$5)/yd^2

 

where C is total cost.  

 

C=7yd^2•($21+$5)/yd^2

C=$182

3 0
2 years ago
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