Answer:
forst find the area of the whole rectangle and then the area of the unshaded triangles then add the area of the two triangle and subtract it with the area of the rectange
Step-by-step explanation: area of rectangle is length × breadth and area of triangle is 1/2 × base × height
Answer:
One
Explanation:
3
y
=
18
x
+
21
XXX
⇔
y
=
6
x
+
7
5
y
+
55
=
30
x
XXX
⇔
y
=
6
x
−
11
both equations are linear and they are not co-linear
therefore there is exactly 1 solutio
It’s the second one -3/4
i took this class last year
The number of the board's price of $6.50 will be 12 and the number of the boards for the price of $9.50 will be 8.
<h3>What is an expression?</h3>
Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division
Given that:-
The total cost of 20 boards is $166. one size costs $6.50, and the second size costs $9.50.
Let the number of the boards for the price of $6.50 is x and for $9.50 is y. So the expression will be given as:-
6.50x + 9.5 y = 166
x + y = 20
Put x = 20 - y
6.50( 20 - y) + 9.5y = 166
130 - 6.50y + 9.50y = 166
3y = 166 -30
3y = 36
y = 12
Now the value of x will be:-
x = 20 - y = 20 - 12 = 8
Therefore the number of the board's price of $6.50 will be 12 and the number of the boards for the price of $9.50 will be 8.
To know more about Expression follow
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Answer:
15
you can use the equation p = 2l+2w to find the width of the rectangle
Step-by-step explanation:
perimeter of a rectange p = 2l+2w
l = length
w = width
p = perimeter
it tells you the perimeter is 50 so p=50
it also tells you the length is 10
solve for w (width)
50 = 2(10)+2w
50 = 20+2w
30 = 2w
15 = w
width is 15
