Step-by-step explanation:
find the arithmetic mean of given data 12 15 18 20
Answer:
- 2/7
Step-by-step explanation:
+ and - becomes -
2/7 - 4/7 = - 2/7
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Answer:
y = 4
x = -16
Step-by-step explanation:
this time we should multiply the first equation with -1 because we only need to change its state of negativity
2x + y = -28
-2x - 2y = 24 ➡ -y = -4 ➡ y = 4
if 2x + y = -28 the 2x + 4 =-28 ➡ 2x = -32 x = -16
for volume of prism you do area of cross section * height
area = 36
height = 15
=36*15
=540cm ^3
Answer:
6.) angle 1 = 61 degrees. angle 2 = 61 degrees. . 7.) angle 1 = 44 degrees
angle 2 = 44 degrees
Step-by-step explanation:
main reason is that because of Alternate Interior angles theorem angle 1 = angle 2
for both questions 6 and 7.
Also the angles that form a straight line sum to 180 degrees
so 61 + 58 + 61 = 180
and for 7
90 = 46 + 44