Answer:
270
Step-by-step explanation:
The mean is 228 and the standard deviation is 18.
2.3 standard deviations above the mean is:
228 + 2.3×18
228 + 41.4
269.4
Since scores are usually integers, we round up to 270.
3x+5x=180
8x=180
x=22.53
3x=67.5°5
5x=112.5° (the larger angle)
Answer:
24 cm
Step-by-step explanation:
the perimeter is the circumference, the way to go one time fully around the object.
now think, what distances do you have to go when walking around a rectangle ?
well, there are 2 times the length and 2 times the width or breadth. that's it.
P = 2×7 + 2×5 = 14 + 10 = 24 cm
Answer:
15 in.
Use this website : http://graysonmath.com/wp-content/uploads/2018/10/HM2_6.4-Practice-Key.pdf
Step-by-step explanation: