Answer:
480
Step-by-step explanation:
Sn = n÷2 × (2a + (n-1)d)
n = 20 a = -14 d = 4
S20 = 10 × (-28 + 19 × 4) = 480
Question incomplete
Answered by Gauthmath must click thanks and mark brainliest
35
the ratio for the two is 5:7 and you want to find _:49. to get from 7 to 49 you multiply the 7 by 7. because you did that to one side you have to do the same to the other and multiply 5 by 7 which gives you 35
124 square units
you just have to count the top, bottom, and a side and times by 2
Kaylen has $12.63 left.
$14.87 + $7.76 = $22.63
$22.63 - $10.00 = $12.63
