annafran89
26.07.2019 •
Mathematics
If 4 times a number is added to -7, the result is 3 more than twice the number. find the number
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Ответ:
Construct the equation:
4x + (-7) = 2x + 3
Solve for x :
4x - 7 = 2x + 3
Take away 2x from both sides:
2x - 7 = 3
Add 7 to both sides:
2x = 10
Divide by 2 on both sides:
x = 5
The number is 5.
Ответ:
4x -7 = 3+2x
4x-2x=3+7
2x=10
X=10/2
X = 5
Ответ:
A circle is 360° all the way around; therefore, if you divide an arc's degree measure by 360°, you find the fraction of the circle's circumference that the arc makes up. Then, if you multiply the length all the way around the circle (the circle's circumference) by that fraction, you get the length along the arc