Answer:
x= √10 and x= -√10
Step-by-step explanation:
first look to isolate the term with the variable on one side
-5 +5 -2x² = -5 -15; subtract 5 from both sides(inverse of addition)
-2x² = -20; divide both sides by -2 (inverse of multiplication)
x² = 10; square root both sides (the inverse of raising to power of 2)
√x² =√10
x =±√10
Answer: r=12.5
Explanation: 78.5 (circumference) / 2 times pi (6.28) = 12.5 (radius)
Answer and Step-by-step explanation:
We are given a linear pair. The angles of a linear pair add up to 180.
<u>To find x, add the two angles together and equal it to 180, then solve for x.</u>
126 + x + 23 = 180
<u>Simplify.</u>
149 + x = 180
<u>Subtract both sides of the equation by 149.</u>
x = 31
<u>x = 31 is the answer.</u>
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Answer:
1.75 * 0.84
Step-by-step explanation:
1.74 * 0.84 = 1.4616
1.79 * 0.69 = 1.2351
Answer:
58.8Joules
Step-by-step explanation:
The gravitational potential energy = mgh
m is the mass = 2kg
g is the acceleration due to gravity = 9.8 m/s²
h is the height = 3m
Substitute;
GPE = 2 * 9.8 * 3
GPE = 6 * 9.8
GPE = 58.8Joules
Hence the Gravitational Potential Energy of the block is 58.8Joules