Answer:
Step-by-step explanation:
2x+3x+4x=180
8x=180
divide by 8 to both sides
x=22.5
Answer is 160
explanation: add all of them up and divid by how many numbers are in the data set
74+81+77+88=320
then divid 320 by 4 =160
Answer:
The base = 8 cm and the altitude = 4 cm.
Step-by-step explanation:
b = a + 4 where b = base and a = the altitude.
Area = 1/2 * a * b = 16
Area = 1/2 * a * (a + 4) = 16
1/2 a^2 + 2a = 16
a^2 + 4a - 32 = 0
(a + 8)(a - 4) = 0
a = 4 .
b = 4+4 = 8.
Answer:
35 cm
Step-by-step explanation:
2m = 200cm
200cm-165cm=35cm
Answer:c
Step-by-step explanation:
