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:
Below.
Step-by-step explanation:
7) c^2 = a^2 + b^2
15^2 = 11^2 + b^2
b^2 = 225 - 121 = 104
b = √104
= √4√26
= 2√26.m
8). 4^2 = a^2 + (√6)^2
a^2 = 16 - 6
a^2 = 10
a = √10.
<u><em>5h+9 is the right answer. </em></u> First you had to used group like terms, and it gave us,
. Then add similar elements, and it gave us,
, or
. Finally, you had to add by the numbers, and it gave us,
, or and it gave us the answer is 5h+9 is the right answer. Hope this helps! And thank you for posting your question at here on brainly, and have a great day. -Charlie
Answer:
1/64
Step-by-step explanation:
4^(-3)
1/4³
1/64