Step 1: set up equation
-2x+y=3
Step 2: add 2x to both sides
-2x+y=3
+2x +2x
<u>
y=3+2x</u>
Hope this helps :)
The answer is letter b 15mx20m
Answer:
b. 3x - (5y -7)
Step-by-step explanation:
Let x represent "a number". Let y represent "another number."
The "3 times a number" is represented by 3x.
And "5 times another number less 7" is represented by 5y -7.
The difference between these quantities is the second subtracted from the first:
... 3x - (5y -7) . . . . matches selection b.
DE+EF=DF
8x+2=x+9
8x-x=9-2
7x=7
x=7/7
x=1
DF=x+9
put the value of x
DF=1+9
DF=10
<span> By Descartes' Rules of Signs, you need to find the sign changes for f(x) and f(-x) [Positive and Negative Case - respectively]
f(x) = 8x^4 + 13x³ - 11x² + x + 9
Since there are two sign changes between terms, we can show that there are possibly 2 positive roots.
f(-x) = 8x^4 - 13x³ - 11x² - x + 9
For the negative case, you let x = -x. Then, we have 8x^4 - 13x³ - 11x²
- x + 9. There are 2 possible negative roots since there are 2 sign
changes. Hence, the possible choice is:
Positive Real: 2 or 0
Negative Real: 2 or 0
Complex: 4, 2 or 0
</span>
i know i am late and i hope you still need the help ! :D
