2 answers:
Answer:
x=8
Step-by-step explanation:
Since this is an isosceles triangle <A is equal to <C
<A = <C = 69
<A+ <B +<C = 180 because the 3 angles of a triangle add to 180 degrees.
69 + 5x+2 + 69 = 180
Combine like terms
140+ 5x = 180
Subtract 140 from each side
140-140 +5x =180-140
5x = 40
Divide by 5
5x/5 =40/5
x=8
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Answer:
x=2
Step-by-step explanation:
The cube root of 343 is 7.
One side has an area of 7*7 = 49 square cm
There are 6 sides to a cube
6 * 49 is the surface area = 294
Answer:
3.17
Step-by-step explanation:
0.45x + 0.72 + 5x = 18
5.45x = 17.28
x = 3.17