Answer:
(a) 0.00000221 (b) 4.2 x
Step-by-step explanation:
(a) means you need to move the decimal left (because of the negative) 6 spaces. So you have 2.21 move the decimal 6 spaces left and you end up with 0.00000221
(b) If you have 420,000 and you count 5 spaces from the last number, that leaves the decimal inbetween the 4 and 2 so your answer will be 4.2 x
c = 4w + 3
c = w + 9
c = w – 3
w = c + 9
w = c – 3
w = c – 9
w = 4c + 3
c=w+9 and c=w-3
w=c-9 and w=c+3
These pairs of equations are best relationship models between c and w.
How to find pair of best relationship model for c and w?
We have given,
Variable c is 9 more than variable w which can be written as
c=w+9
It can also be written as :w=c-9
It is also given that,Variable c is also 3 less than variable w, which can be written as:
c=w-3
It can also be written as: w=c+3
This way our pair of relationship between c and w are:
c=w+9 and c=w-3
w=c-9 and w=c+3
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Which statement shows a correct next step in solving the equation?
The equation can become 4x − 3 − 5x + 1 = 3 by applying the associative property of multiplication.
The equation can become 4x − 3 − 5x + 1 = 3 by applying the distributive property.
The equation can become 4x − 12 − 5x − 5 = 3 by applying the distributive property.
The equation can become 4x − 12 − 5x − 5 = 3 by applying the associative property of multiplication
Answer:
Option C is correct.
The equation can become by applying distributive property.
Step-by-step explanation:
Given an equation:
Distributive property states that when a number is multiplied by the sum of two numbers, then the first number can be distributed to both of those numbers and multiplied by each of them separately i.e,,
Apply distributive to the given equation we get;
Simplify:
Therefore, the statement which shows a correct next step in solving the equation is, the equation can become by applying distributive property.