Not sure for (b)
Step-by-step explanation:
(a)55+80+x=180 (angles inside the triangle)
135+×=+180
x=180-135
x=45
Eva because 3:2 = 9:6 because when they multiply by 3 on each ratio
Answer:
60cm
Step-by-step explanation:
perimeter of a square=4L
192cm=4L
L=48cm
Dilated by ratio 0.25
1 : 0.25 = 48 : 12
New length = 48+12 = 60cm.
Answer:
It increases
Step-by-step explanation:
The mean of the given data set of 8 values is 4.75 ()
Adding 7 into the data set also increase the number of data points to 9, so the mean becomes:, which is equal to 5
Hope this helps
The answer is 171, 325 just use a calculator