The answer is 330. 67x5=335. Now round it.
Answer:
Step-by-step explanation:
6) triangle ABC is similar to triangle DEC. It means that
AB/DE = BC/EC = AC/DC
Therefore,
6/21 = 10/y
Cross multiplying, it becomes
6y = 210
y = 210/6
y = 35
Also
6/21 = x/28
Cross multiplying, it becomes
6 × 28 = 21x
21x = 168
x = 168/21
x = 8
7) triangle JKL is similar to triangle NMP. It means that
JK/NM = KL/MP = JL/NP
Therefore,
49/14 = (9x + 1)/(x + 5)
Cross multiplying, it becomes
49(x + 5) = 14(9x + 1)
49x + 245 = 126x + 14
126x - 49x = 245 - 14
77x = 231
x = 231/77
x = 3
Answer:
(b) 5.
Step-by-step explanation:
The bottom numbers are calculated from the 2 above them according to the formula:
c = 15(a + b)
- because: 75 = 15(2 + 3) and
165 = 15(7 + 4)
Therefore if the unknown number is x :
285 = 15(14 + x)
285 = 210 + 15x
15x = 285 - 210
15x = 75
x = 5.
Answer:
90°
Step-by-step explanation:
15 mins = 1/4 of full circle
1/4 of 360 = 90
90°
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Answer:
width is 4 meters
Step-by-step explanation:
A = l*w where l is length and w is width
28 = 7*w
Divide each side by 7
28/7 = 7w/7
4 =w
