Answer:
150 units^2
Step-by-step explanation:
- Area of a square: x^2, where x represents a side length of the square.
- Area of a triangle: 1/2bh, where b is the length of the base and h is the height of the triangle.
Find the area of the square by squaring one of its sides.
Find the area of the triangle by substituting 10 and 10 for b and h into the formula.
Add up the two areas that were found.
100 + 50 = 150 units^2
So 8x+4+4x+8=15x-9
Combine like terms.
12x+12=15x-9
Add 9 to both sides.
12x+21=15x
Subtract 12 from both sides.
21=3x
Divide both sides by 3.
x=7
Now plug in 7 for x in 8x+4.
8(7)+4
56+4
=60
9.78(4.3x + 5.15)
Multiply everything inside the parentheses by 9.78
42.054x + 50.367
Answer:
NO.
Step-by-step explanation:
y=-5(3)+1=-15+1=-14, not 8
y=3(3)-2=9-2=7, not 8
Answer:
If both Kelsey and Jeana purchase 6 pairs of uniform pants then they would pay the same amount for their purchases.
Step-by-step explanation:
The information provided is as follows:
- Kelsey buys several pairs of uniform pants for $17.95 each, and a sweater for $24.
- Jeana shops at a different store and buys several pairs of uniform pants for $18.95 each, plus a sweater for $18.
The variable <em>x</em> is the number of pairs of pants.
The total cost function for Kelsey will be:
The total cost function for Jeana will be:
Consider that both pay the same total cost for their purchases.
Compute the value of <em>x</em> as follows:
Thus, if both Kelsey and Jeana purchase 6 pairs of uniform pants then they would pay the same amount for their purchases.