-5x - 7 < 28.....add 7 to both sides
-5x < 35....divide both sides by -5, change the inequality sign (u change the inequality sign when dividing/multiplying by a negative number)
x > -7
Answer:
8•8=64•8=512-1=511÷7=73
Step-by-step explanation:
8 to the power of 3 is divisible by 7 because if the result is a real number, then you got it correct. We got a whole number here, so it was easier but if you get decimals, it takes more work. Well, there's your answer, hope it helped!!!
The 3 consecutive integers of a sum of 81<span>X+(X+2)+(X+4)=81
3X+6=81
3X=81-6
3X=75
X=75/3</span>
(x+b/2a)^2-(b^2-4ac)/2a=0
Step 2:
Re-write the expression:
(x+b/2a)^2=(b^2-4ac)/4a^2
Step 3:
get the square root of both sides:
x+b/2a=sqrt[(b^2-4ac)/4a^2]
Step 4:
Simplifying we get:
x+b/2a=sqrt[b^2-4ac]/2a
Step 5
Make x the subject:
x=-b/2a+/-sqrt[b^2-4ac]/2a
Answer:
The energy in object is 3.8 Kilo Joules.
Step-by-step explanation:
We are given the following in the question:
Mass = 20 kg
Height,h = 20 m
g=9.5 m/s^2
Formula:
Potential energy =
Putting value we get,
Thus, the energy in object is 3.8 Kilo Joules.