Answer:
1/10≤x
Step-by-step explanation:
Lets write out the equation to make it easy.
4≥(-2x+1)*5
Lets distribute the 5
4≥-10x+5
Subtract the 5 from both sides
4-5≥-10x+5-5
Do the subtraction
-1≥-10x
Divide both side by -10
-1/-10≤-10x/-10
Divide
1/10≤x
Use the quadratic formula to solve it:
<span>Y= -6x^2 +100x -180
a= -6
b= 100
c= -180
x = [-b +- sq root(b^2 - 4ac)] / 2a
x = [-100 +- sq root (10,000 -4*-6*-180)] / -12
x = [-100 +- </span><span>sq root (10,000 -4,320)] / -12
</span><span><span>x = [-100 +- <span>sq root (5,680)] / -12
</span></span>x1 = (-100 + </span>
<span>
<span>
<span>
75.3658
</span>
</span>
</span>
<span>) / -12
</span>x1 =
<span>
<span>
<span>
24.6342 / -12
</span></span></span><span>x1 = -2.05285
x2 = </span>(-100
-<span>
<span>
75.3658
</span>
</span>
<span>) / -12
</span>x2 = (-<span>
175.3658
</span>
<span>) / -12
x 2 = </span><span><span><span>14.6138
</span> </span></span><span>
</span>
First, note that x+21 and 3x+9 are "complementary angles;" they add up to 90 degrees. Thus, 4x + 30 = 90 degrees, so that 4x = 60 degrees, and x = 15 degrees.
Answer:
x=54
Step-by-step explanation:
This is a vertical angle so 2x+2 must equal 3x-52
2x+2=3x-52
2x-3x=-52-2
-x=-54
x=54