Answer:
84cm^2
Step-by-step explanation:
P=2l+2w
We are given,
P=40cm
l=2w+2
Plug these into the first formula and solve for the dimensions,
length and width, of the rectangle:
40=2(2w+2)+2w Simplify
40=4w+4+2w
40=6w+4
36=6w
6=w OR the width is 6cm, therefore,
the length is
l=2(6)+2
l=14cm
To calculate the area of a rectangle, A=lw,
plug the length,14cm, and the width, 6cm, into this formula
A=(14)(6)
A=84cm2 OR the area of the rectangle is 84cm^2
Answer:
BC=3root7
CD=root58
Step-by-step explanation:
According to Pythagorean theorem, in a right triangle,a^2+b^2=c^2. a, b are two legs of right triangle. Cis the hypotenuse
12^2-9^2=63
BC=root63=3root7
BD^2-BC^2=CD^2
121-63=CD^2
CD=root58
The x intercept is (1/9, 0) hope this helps, have a nice day :)
Answer:
what do you mean work on your gramer
Step-by-step explanation:
Well 1.25 meters per second so 1.25 x 8 = 10
so 10 meters in 8 seconds