Answer:
P=22cm
Step-by-step explanation:
L=8cm
b=(x–5)cm
A=(3x)cm²
we know that:
P=2(l+b)
and that
A=lb= 8(x–5)=8x–40
we have been given the value of A which is 3x, substituting into the equation for Area
=> 3x=8x–40
rearranging
=> x=8
therefore the breadth is (x–5)=(8–5)=3cm
=> P=2(8+3)=2(11)=22cm
hence, the perimeter of the rectangle is 22cm.
<span>He can choose his sample from every third person on each list rather than 10 people.</span>
Answer: In mathematics education, precalculus or college algebra is a course, or a set of courses, that includes algebra and trigonometry at a level which is designed to prepare students for the study of calculus. Schools often distinguish between algebra and trigonometry as two separate parts of the coursework.
Step-by-step explanation:
Answer:
10,346.0(1.1)^x
112,096 people
Step-by-step explanation:
edg
Answer:
x = 28
y = 83
Step-by-step explanation:
We can use ratios to solve
18 21
------ = -------
24 x
Using cross products
18x = 24*21
Divide each side by 18
x = 24*21/18
x =28
The angles must be equal
<M = <I
83 = y