The area of a palalelogram by definition is given by:
A = (b) * (h)
Where,
b: base
h: height
We must also take into account the following conversion:
1 yard = 3 feet
Substituting the values (in feet) we have:
A = (3x) * (3y)
A = 9xy feet ^ 2
Answer:
the area of a parallelogram is:
9xy sq. ft.
Answer:
5
Step-by-step explanation:
Let x be the number of cell phones with keyboards needed.
40% = 
=
x+45 = 40 -----1
x+120 = 100 -----2
You would want to make the total of 1 the same as 2.
1×
: 2.5+112.5 = 100 -----3
Now 2 and 3 are equal.
x+120 = 2.5x+112.5
Isolate the x and numbers.
120-112.5 = 2.5x-x
Simplify.
1.5x = 7.5
x = 
× 7.5
x = 5
The manager of the store needs to add 5 more cell phones with keyboards.
Answer: 94 child tickets
<u>Step-by-step explanation:</u>
Let x represent child tickets
Let y represent adult tickets
Cost Equation: 5.70x + 9.75y = 1306.10
Quantity Equation: x + y = 173
Solve the system of equations using the elimination method:
Multiply the Quantity Equation by -5.70
5.70x + 9.75y = 1306.10
<u> -5.70x - 5.70y</u> = <u>-986.10</u>
4.05y = 320.00
<u> ÷4.05 </u> <u>÷4.05 </u>
y = 79
x + y = 173
x + 79 = 173
x = 94
Answer: 722.5 this is after sale
