Mathematics: After simplifying, which expressions are equivalent? check all that apply. (3.4a – 1.7b) + (2.5a – 3.9b) (2.5a + 1.6b) + (3.4a + 4b) (–3.9b + a) + (–1.7b + 4.9a) –0.4b + (6b – 5.9a) 5.9a – 5.6b

30/40 say no, so x/1000 would say no. 1000/40=25, 25*30=750. So, about 750 would dislike it....

After simplifying, which expressions are equivalent?

CaylaJosephinee

04.08.2020

Expression 1, 3 and 5 are equivalent.

Step-by-step explanation:

After simplifying each expression we get,

(3.4a-1.7b)+(2.5a-3.9b)

Combine like term.

(3.4a+2.5a)+(-1.7b-3.9b)

5.9a-5.6b

Similarly,

2. (2.5a+1.6b)+(3.4a+4b)=2.5a+3.4a+1.6b+4b=5.9a+5.6b

3. (-3.9b+a)+(-1.7b+4.9a)=a+4.9a-3.9b-1.7b=5.9a-5.6b

4. -0.4b+(6b-5.9a)=-0.4b+6b-5.9a=-5.9a+5.6b

5. 5.9a-5.6b

Therefore expression 1, 3 and 5 are equivalent.

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