When you know the area and one side of a rectangle, divide the area by the known side to find the length of the other side.
Length = 63/6
Length = 10.5 inches
I got C. 20 square units.
I could be wrong, but probably not. It was hard to figure out what the plot numbers were and the answer choices because the picture was super blurry. That's why I said I might be wrong.
Hope this helps!! :-)
3a+11=7a-13
move 7a to the other side
sign changes from +7a to -7a
3a-7a+11= 7a-7a-13( combine like terms)
3a-7a+11= -13
-4a+11= -13
move 11 to the other side
sign changes from +11 to -11
-4a+11-11= -13-11
-4a= -13-11
-4a= -24
divide both sides by -4 to get a by itself
-4a/-4= -24/-4
Answer: a= 6
Area of triangle ABC = 80 square units
Step-by-step explanation:
We need to find the area of triangle ABC when we are given:
a= 15, b=12 and C=63°
We can find area of triangle using SAS (Side Angle Side)
The formula used is:
![Area = \frac{ab\,SinC}{2}](https://tex.z-dn.net/?f=Area%20%3D%20%5Cfrac%7Bab%5C%2CSinC%7D%7B2%7D)
We are given a= 15, b=12 and C=63°, Putting values in the formula
![Area = \frac{15*12*\,Sin(63^{\circ})}{2}](https://tex.z-dn.net/?f=Area%20%3D%20%5Cfrac%7B15%2A12%2A%5C%2CSin%2863%5E%7B%5Ccirc%7D%29%7D%7B2%7D)
Solving
![Area = \frac{15*12*\,0.891}{2}\\Area = \frac{160.38}{2}\\Area = 80.19](https://tex.z-dn.net/?f=Area%20%3D%20%5Cfrac%7B15%2A12%2A%5C%2C0.891%7D%7B2%7D%5C%5CArea%20%3D%20%5Cfrac%7B160.38%7D%7B2%7D%5C%5CArea%20%3D%2080.19)
So, Area = 80.19
Rounding off to nearest whole number:
Area = 80 square units
Learn More:
brainly.com/question/4354581
brainly.com/question/6564657
Keywords: Area of triangle with two sides and one angle, SAS, area of triangle
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