Answer:
x= 4/3
Step-by-step explanation:
Subtract 3/7 from both sides
-x= 2x-28/7
simplify
-x=2x-4
Subtract 2x from both sides
-3x=4
divide both sides by -3
x= 4/3
Answer: supplementary
Step-by-step explanation:
Supplementary angles.=180°
The area of the triangle is 30 units^2. the height of the triangle is 4 units.
<h3>What is the area of the triangle?</h3>
The area of the triangle is defined as the product of half the base and the height of the triangle.
The area of the triangle can be calulated by the herons formula
base of ABC = AC = 15 units
Height of ABC = 4 units
Semi perimeter s = 5 + 12.65 + 15/ 2 = 32.65 / 2 = 16.32
Herons formula

Area of ABC is 30 units^2 approximately.
Height of the triangle = 2( area) / base
= 2( 30) / 15
= 4.
WE can see that
Area of ABC = 1/2 (base) (height)
= 1/2 (15 units) (4 units)
= 30 units^2
Learn more about the area;
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Answer:
the nth term is 2^n-3 because we see that each number is being multiplied by 2
The general term is obtained by starting with the initial value 5 and then subtracting 4 each time you wish to generate a new term:
a2 = second term = 5+(2-1)(-4) = 5+(-4) = 1
General term:
an = nth term = 5+(n-1)(-4)
Thus, the 21st term is 5+(21-1)(-4) = 5 + (20)(-4) = -75 (answer)