The sum of the first 28 terms in this sequence is 4,220
Answer:
119/100 = 357/X
Step-by-step explanation:
since 357 is the price with the extra 19% tax, you can put 119 and 357 as numerators in a fraction because thats the price % of total cost with the tax, then have the denominators as the normal price without tax. so 119/100 bc 119 is the total cost % with tax, and 100 as the normal cost %. same for the opposite side, 357/X. 357 being the price with the tax and X being the price without the tax. so you just cross multiply to find X. so 100 × 357 (35,700) then divide the answer of that by 119 (35,700/119) to find X (300)
Answer: i assume you're looking for F, if so F = -16
Step-by-step explanation:
you would start by adding +24 to each side of the equation, giving you f/4 = -4
then, you would multiply each side of the equation by 4, giving you f = -16
Y=ab^x so we can pick any two points, I'll use (1,2) and (2,1)
1/2=(ab^2)/(ab^1)
1/2=b, and then we can use any point to solve for a, I'll use (4, 1/4)
1/4=a(1/2)^4
1/4=a/16
a=4 so our equation is:
y=4(1/2)^x
Thus a=4 and b=1/2
The answer to your question is $231
