Answer:
21
Step-by-step explanation:
5(21)-12=93
3(21)+30=93
For Part A) multiply the radius (28) by two in order to get the diameter. Take that product and multiply it by the "abbreviation" of pi that they give you (3.14). BAM, you get the circumference of the circle.
Part B) Because you're covering something, you need to find the area rather than the circumference (the distance around a circle). It's like needing to know the number of square units that can fit on a wall to figure out how many gallons of paint you need to cover it entirely.
Part C) Circumference, just I said.. the key word here is around. Distance around a circle !!
Answer:
10.92cm
Step-by-step explanation:
We can solve this problem by taking the formula to the area of a triangle and substituting our given numbers with the variables in it.
, where 
represents base and 
represents height.
So, if we substitute our given measurements with the variables in this formula, we can easily solve this.
Then, using the order of operations, we multiply and ultimately solve this problem.
Thus, our answer is 10.92cm.
All angles would have a sum of 180 degrees, so 180-140 is 40. And if you divide 40 by 2, the two side angles will be 20 degrees.
<span>6x2 -5x –3 = 0
a = 6 b=-5 and c=-3
x = [-b +-sq root (b² -4ac)] / 2a
x = [--5 +-sq root (25 -4*6*-3)] / 2*6
x = [5 +- sq root (25 +72)] / 12
x = [5 +- sq root (97)] / 12
x1 = [5 + </span><span><span><span>9.8488578018
</span>
</span>
</span>
] / 12
x1 =
<span>
<span>
<span>
14.8488578018
</span>
</span>
</span>
/ 12
x1 =
<span>
<span>
<span>
1.2374048168
</span>
</span>
</span>
x2 = [5 -
<span>
<span>
<span>
9.8488578018
</span>
</span>
</span>
] / 12
x2 =
<span>
<span>
<span>
-4.8488578018
</span>
</span>
</span>
/ 12
x2 =
<span>
<span>
<span>
-0.4040714835
</span>
</span>
</span>
