Answer:
8
Step-by-step explanation:
Number = 2x
Therefore, 2x + 8 = 8(x - 5)
2x + 8 = 8x - 40
6x = 48
<u>x</u><u> </u><u>=</u><u> </u><u>8</u>
The solution of the inequality is x ≥ 1.
Solution:
Given inequality:
To find the solution of the inequality:
Subtract 8 from both sides.
Divide by 3 on both sides.
On simplifying this, we get
The solution of the inequality is x ≥ 1.
The graph of the solution is attached below.
Answer:
if sin (x-3) degrees = cos (2x+6) degrees, find the value of x.
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Note: sin and cos are complementary functions....
sin(x) = cos (90-x)
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Your Problem:
sin(x-3) = cos(90-(x-3))
Equation:
90-[x-3] = 2x+6
90-x+3 = 2x+6
3x = 93-6
x = 31-2
x = 29
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
x²+2x-15 = x²-3x+5x-15 = x(x-3)+5(x-3)=(x+5)(x-3)
or delta:
∆=2²-4*1*(-15)=4+60=64
√∆=8
x1 = (-2+8)/2 = 3
x2=(-2-8)/2=-5
and 4x+20 = 4(x+5)
The same is (x+5), so it is GCF. answer C
