Formula
Area = (B1 + B2)*h/2
Area = 72 in²
B1 = x
B2 = x +6
h = 6 in
Substitute and Solve
Area = (x + 6 + x)*6/2 = 72 Divide by 2
Area = (2x + 6)*3 = 72 Remove the brackets
Area = 6x + 18 = 72 Subtract 18
6x = 72 - 18
6x = 66 Divide by 6
x = 66/6
x = 11
B1 and B2
Base 1 = 6
Base 2 = 12
Answer:
8.8
I don't see that choice in this picture so I hope that those are not all the choices
Step-by-step explanation:
Lets find all the angles first, that highlighted red square means that angle is a right angle, also known as 90 degrees, and the missing angle will be represented with b, also a triangle equals 180 degrees:
48 + 90 + b = 180
138 + b = 180
b = 42
So the missing angle is 42. If u didn't know, how wide an angle is effects the length of the side that it's facing. So because one of the angle is 48 degrees, the length of the side facing it is 10. So we needed to find the missing angle first to determine x, which we already did. So lets find the scale factor, we're dividing 42 with 48:
42/48 = 7/8
Now multiply 7/8 with 10:
10(7/8) = 70/8 = 8.75 = 8.8
I guess you need help with #3
So you have to 642 by 5
By the way, this is a great question for a calculator to check your answer
The answer 128.4
Step-by-step explanation:
4n + 3n2 + 2 + n + 6n – 1 Expand with – 1
3n2 + 4n + n + 6n + 2 – 1 Grouped liked terms
3n2 + 11n – 1
