Answer:
-7
Step-by-step explanation:
To find x, substitute the values and solve.
R = 2x + 9y
It becomes:
2x + 27 = 13
Rearrange and solve
2x = -14
x = -7
Hope this helps
If you have a graphing calculaator enter the matrix then on the outside of it hit the ^ button and put -1
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Answer:
Step-by-step explanation:
There are four basic rules to simplify expressions using properties of expressions.
i) By removing parentheses by multiplying factors .
ii) Using exponent rules to remove parentheses in terms with exponent.
iii) We can combine terms by adding coefficients.
iv) By combining the constants .
Answer:
it's 3. how could u not know that 0.4 x 3 = 1.2 duh