Answer:
multiplicative inverse or reciprocal for a number x, denoted by 1/x or x−1, is a number which when multiplied by xyields the multiplicative identity, 1.
The equation would be
g + (g + 9) = 45
2g + 9 = 45
- 9
2g = 36
÷ 2
g = 18
18 + 9 = 27
Girls: 18
Boys: 27
Hope this helps! Let me know if you have any questions :)
Answer:
1.49103082= 1.49
Step-by-step explanation:
Answer:
16
Step-by-step explanation:
To solve this equation, we need the formula for perfect squares:
or
<em>this is the formula we will use because the signs match the one in the question</em>.
Knowing these, we can set up an equation that assumes that the answer we will end up with is a perfect square.
Work:

- this is the setup for being able to solve for the unknown
, now we need to solve for
.
(I replaced
with
because I'm setting up this question to be a perfect square).

- multiply the left side. Remember that your answer will not be
, but
.

- Divide like terms and isolate the variable. In this case,
and
are on both sides, so dive them and they will be canceled out.

- divide by
and you will have your value for
.

- Now we plug
into our original equation equation for perfect squares.

Our final answer is 16.