Answer:
x= -5 + 5
, x= -5 - 5
Step-by-step explanation:
Since this quadratic is set to zero, we can use the quadratic formula to solve this.
x^2 + 10x - 2400 = 0
Quadractic formula = x= -b +-
/2a
For this equation:
a= 1, b=10, c=-2400
Plug these numbers into the equation and solve.
x= -10 +-
)/2(1)
x= -10 +-
/2
x= -10 +-
/2
x= -10 +-
/2
x= -10 +- 5 * 2
/2
x= -10 +- 10
/ 2
Divide by 2.
x= -5 +- 5
Answer:
x= -5 + 5
or x= -5 - 5
Answer:
4 inches deep, 5 inches high and 15 inches across
Answer:
50
Step-by-step explanation:
When a number is next to a variable, such as 5x, this means you will multiply them(five times x). With x being -2, we will multiply -2 x -2 = 4. the exponent tells you how many times to multiply a number by itself. If the exponent was 5, we would multiply 2 by itself 5 times to get 10. Since we got 4 for our answer, we will multiply that by since it was an exponent and we multiply it. 4 x 5 = 20. Since we know that we multiply numbers next to variables, we will multiply 3y or 3(10). 3 x 10 = 30. Add this to 20 to get your answer. 20 + 30 = 50.
Hope this helps :)
The one on the left is -5/6
The one on the right is 1/21
<span>X/x+2 = 4/5
5x = 4x + 8
5x - 4x = 8
x= 8
</span>