Answer:
Step-by-step explanation:
<u>Given AP with:</u>
- a₁= 28, aₙ = 79, Sₙ = 963
<u>Use the formula:</u>
- Sₙ = 1/2n(a₁ + aₙ), sum of the first n terms
<u>Substitute given values and solve for n:</u>
- 963 = 1/2n(28 + 79)
- 963 = 1/2n(107)
- 1/2n = 963/107
- 1/2n = 9
- n = 9*2
- n = 18
Multiply 7 x 2, and you get 14. Multply 7 x 1, and you get 7. Add 14+7, and you get 21. She can read 21 pages in 25 minuets.
Answer:
x=6
Step-by-step explanation:
2x+(4x+3)=39
2x+4x+3=39
6x+3=39
6x=39-3
6x=36
x=36÷6
x=6
I think it’s the second option, hope this helps. If it’s correct please give brainliest
Answer:
<em>I dont know</em>
Step-by-step explanation:
