X/9=1
Multiply both sides by 9. So x=9.
Answer:
i would have to see the lesson i dont know how u want me to do it lol
Step-by-step explanation:
Sin 30° equals 0.5 and as a fraction that would be 5/10 and 5/10 simplified is 1/2
Step-by-step explanation:
For #7 and #8, they have given you the answer of the product but without decimals.
You can just add up all the decimal places for this kind of multiplication.
For example, 6.<u>543</u> and 2.<u>6</u> have 4 decimal places in total (underlined), so just count four: 17.<u>0118</u>.
We can solve it by substitution: y = - 3 x - 1.
So the 2nd equation becomes:
4 x + 3 * ( - 3 x - 1 ) = 2
4 x - 9 x - 3 = 2
- 5 x = 2 + 3
- 5 x = 5
x = 5 : ( - 5 ) = - 1
y = - 3 * ( - 1 ) - 1 = 3 - 1 = 2
Answer: x = - 1, y = 2.