First since it is a triangle and it says meter square that means its an area
so the area is 1/2hb h stands for height and b stands for base
so
a=1/2bh
a=1/2(12)(9)
a=1/2(108)
a=54m^2
It says the cost of sail is $15 per square meter
so
$15*54
=$810
Why times by 54 because if 1 piece is $15 how about 54pcs?
thats why we will multiply it
Answer:. The numbers are 41 and 14
Step-by-step explanation: X and Y represent the digits. In the Tens place, the digit has 10× its base value. Therefore we can set up equations to model the information given:
10x+y = 10y + x +27
X + Y = 5
y =5-x rewritten to substitute for y
10x + 5-x = 10(5-x)+x +27
Distribute and then combine like terms:
9x +5 = 50 - 9x +27
Add 9x to both sides; subtract 5 from both sides.
9x +9x = 50+27-5
18x = 72 Combine like terms. Then divide both sides to solve for x.
x = 4
4+y=5 Substitute 4 for x; solve for y.
y=1
Substitute values of x and Y into the original equation and check.
40 +1 = 10 +4 + 27
41 = 14+ 27
True! 41=41
The numbers are 41 and 14.
A=4489 hope thus helps you
Answer:
what gr is this for if it for gr.7 I can help u
Step-by-step explanation:
The length that results in the maximum area is 39 feet.
<u><em>Explanation</em></u>
Lets assume, length of the rectangle is 
feet and width of the rectangle is 
feet.
As the length and width must add up to 78 feet, so the equation will be...
Solving equation (1) for y : 
Now the area of the rectangle,
will be maximum when 
Now taking derivative of equation(2) with respect to ......
If 
, then
If 
, then 
So, both length and width will be 39 feet for getting maximum area.
The length that results in the maximum area is 39 feet.
