Step-by-step explanation:
a. Area = 121 ft²
s² = 121
s = √121
Therefore s = 11 ft
b. Area = 81 yd²
s² = 81
s = √81
Therefore s = 9 yd
c. Area = 324 cm²
s² = 324
s = √324
Therefore s = 18 cm
d. Area = 361 mi²
s² = 361
s = √361
Therefore s = 19 MI
Answer: B
You use pemdas to solve and also the GCF in this case is 7
Answer:
a. ║ t - 250 ║ = 30. b. The last song will fit into the album.
Step-by-step explanation:
a. Since the song must be within 30 seconds of 250 seconds to fit in the recording space left on the album, let t be the time duration of the song. So, for it to be within 30 seconds of 250 seconds, the expression is
t - 250 = ±30 or ║ t - 250 ║ = 30.
b. Since the song is 4 minutes and 47 seconds long, converting this to seconds, it is 4 × 60 s + 47 s = 240 s + 47 s = 287 s.
Inserting t into the left side of the equation t - 250 = 287 - 250 = 27 s which is less than 30 s. Since the time difference is less than 30 s, the last song will fit into the album.
Answer:
39
Step-by-step explanation:
A(n) = 15 + 3(n-1)
A(9) = 15 + 3 *(9 - 1)
= 15 + 3 * 8
= 15 + 24
= 39