Answer:
9y-y-7y+3= y+3
Step-by-step explanation:
Any time there is no number in front of a variable, it's automatically 1, you just don't put the 1 there. So it would be
9y - 1y= 8y
So after you do that, you take the 7y and subtract it from 8y
8y - 7y= 1y
And remember you don't put the 1 so it simplifies to just y.
You simply add or subtract all the numbers with the same variable
I'm not the best at explaining so if you have any questions on it I can answer them in the comments :)
Answer:
r is -7
Step-by-step explanation:
(I believe that you mistyped and meant that the fourth term in the sequence should be -686)
The easiest way to find the common ratio is to divide the numbers that are adjacent to each other
As you can see, when we divide a term by its previous term, we get -7 every time. This is our common ratio.
Answer:
10. ⅔ − ∛e
11. 79 + 3√3
Step-by-step explanation:
10. ∫ (1 + 1/x) dx
∫ dx + ∫ (1/x) dx
These are both standard integrals.
x + ln|x| + C
Evaluate between x = ∛e and x = 1.
(1 + ln|1| + C) − (∛e + ln|∛e| + C)
1 + 0 + C − ∛e − ⅓ − C
⅔ − ∛e
11. ∫₁³ (4x³ + ³/₂√x) dx
∫₁³ 4x³ dx + ∫₁³ (³/₂ x^½) dx
(x⁴ + x^(³/₂) + C) |₁³
(x⁴ + x√x + C) |₁³
(3⁴ + 3√3 + C) − (1⁴ + 1√1 + C)
81 + 3√3 + C − 1 − 1 − C
79 + 3√3
BC = 8i + 6
This is the answer for the first question, i'm so so sorry but i'm not sure what the answer is to the second one.
Hopefully this is right! x
4a+3b=21 is open