Answer:
Mathematics uses numbers and data to find ways to describe relationships, importance, value, dependency/independency of variables, and many other things. These computations and concepts are essential to the world because of our human need to make comparisons and place value on things.
Step-by-step explanation:
a) 8 -5v-3 = 5v-5
-5v+5 = 5v-5
identity
b) 3m-6 =4m+7
has 1 solution
c) 2w +4 = 5w -2w +4
2w+4 = 3w+4
w=0
one solution
d) 7y+9 = 7y-6
subtract 7y from each side
9=-6 impossible
no solution
Choice D
Answer:
Step-by-step explanation:
he sold 36 so lets subtract that from the 200 so he has to sell 164 more.
Now we have to figure out what times 24 is 164
It is about 7 because 24 x 7 = 28 and if he needs to sell mORE THAN it can't be 6 so it is 7 hours.
Answer:
[5 . (3 . 12)] shows an equivalent expression to [(5 . 3) . 12] if only the associative property was used to transform the expression ⇒ 1st answer
Step-by-step explanation:
The associative property means you can add or multiply some numbers without matter where you put the parenthesis
Ex: (a + b) + c = a + (b + c) <em>OR</em> (a . b) . c = a . (b . c)
<em>In associative property we move the parenthesis only (we do not move the numbers)</em>
Subtraction or division are not associative
∵ The expression is [(5 . 3) . 12]
- The parenthesis are around the first two numbers, then the
equivalent expression is the one whose parenthesis are
around the last two numbers
∴ The equivalent expression is [5 . (3 . 12)]
∴ [(5 . 3) . 12] ≡ [5 . (3 . 12)]
[5 . (3 . 12)] shows an equivalent expression to [(5 . 3) . 12] if only the associative property was used to transform the expression
