Answer:
The expressions are not equivalent because Ella did not know that you can’t use substitution to test for equivalence.
Step-by-step explanation:
<u>Equivalent algebraic expressions </u> are those expressions which on simplification give the same resulting<u> expression.</u>
Two algebraic <u>expressions</u> are said to be equivalent if their values obtained by substituting any values of the variables are same.
Two expressions 3f+2.6 and 2f+2.6 are not equivalent, because when f=1,
3f+2.6=3.1+2.6=3+2.6=5.6
2f +2.6=2.1+2.6=2+2.6=4.6
5.6≠ 4.6
Method of substitution can only help her to decide the expresssions are not equivalent, but if she wants to prove the expressions are equivalent, she must prove it for all values of f.
3f+2.6=2f+2.6
3f=2f
3f-2f=0
f=0
This is true only when f=0.
Hence,
The expressions are not equivalent because Ella did not know that you can’t use substitution to test for equivalence.
this what i know
Answer:
6 and 18
6+6=12
18+6=24
12x2=24
Unless a number is given it is mainly trial and error so guessing numbers that fit the first part of Ax3=B
Step-by-step explanation:
(10x)^ (-3)
= 1/ [(10x)^3]
= 1/ [10^3* x^3]
= 1/ (1000x^3)
The final answer is 1/ (1000x^3), and I don't think there is a correct option to choose from. ( option c would be correct if it were written with round brackets)
Hope this helps~
In 4 hours, Naoya must have read

There were 350 pages remaining at the time, so the total number of pages is

.
For each hour of reading, Naoya reads 55 pages, so the number of pages he's finished reading by the

'th hour is

. So the number of pages left to read is given by
Answer:
B) 2
Step-by-step explanation:
There are 2 points of intersection