Step-by-step explanation:
Sn=n/2(2a+(n-1)d). n=20
S20= 20/2 (2x5+(20-1)3 a=5
S20=10(10+57). d=8-5=3
S20=10x67
S20= 670
Hope this helps you
have a great day
1 lb ≈ 0.454 kg
1 in ≈ 2.54 cm
I'm not sure I understand the "do not" part of this question. What does it mean to convert from cubic inches (volume) to inches (length), and from centimeter to cubic centimeters?
In any case, you have
(1 lb)/(32.375 in³) ≈ (1 lb)/(3.19 in)³
… ≈ (1 lb)/(3.19 in)³ × (0.454 kg)/(1 lb) × ((1 in)/(2.54 cm))³
… ≈ (0.454 kg)/(3.19 in)³ × ((1 in)/(2.54 cm))³
… ≈ (0.454 kg) × ((1 in)/((3.19 in) × (2.54 cm))³
… ≈ (0.454 kg) × (1/(8.10 cm))³
… ≈ (0.454 kg) × 1/(530.531 cm³)
… ≈ (0.454 kg)/(530.531 cm³)
… ≈ 0.000856 kg/cm³
Once upon a time there was a guy named Jeff. he went to a new school where he moved. so he was all by himself with no friends at all.. so then he met this guy named Zac so it was 1+1=2. and they were bff so they lived happily ever after together being bffs
Answer:
x^2+4x-77
Step-by-step explanation:
distribute x+11 to x-7
x*x-x^2
x*-7=-7x
11*x=11x
11*-7=-77
combine like terms with -7x and 11x to get 4x
x^2+4x-77
