The <em>correct answers</em> are:
B) $25; and
D) $50.
Explanation:
Eric got a 20% discount. This means he paid 100%-20% = 80% of the retail value.
Let C represent the cost of CDs and S represent the cost of sweatshirts. For Eric's purchase, we have the equation:
0.8(3C+S) = 100
Using the distributive property, we have
0.8(3C) + 0.8(S) = 100
2.4C + 0.8S = 100
Neil got a 40% discount; this means he paid 100%-40% = 60% of the retail value. We have the following equation for him:
0.6(4C+2S) = 120
Using the distributive property, we have:
0.6(4C)+0.6(2S) = 120
2.4C + 1.2S = 120
This gives us the system:

Since the coefficient of C is the same in each equation, we will eliminate this variable. We do this by subtracting the equations:

We divide both sides by -0.4:
-0.4S/-0.4 = -20/-0.4
S = 50
Each sweatshirt is $50.
We will substitute this into the first equation:
2.4C+0.8(50) = 100
2.4C + 40 = 100
Subtract 40 from each side:
2.4C+40-40 = 100-40
2.4C = 60
Divide each side by 2.4:
2.4C/2.4 = 60/2.4
C = 25
Each CD is $25.
Answer:
40%
Step-by-step explanation:
52/130 =.4
.4 x 100=40
The next step she should take is to draw arcs above and or below line AB to show where the triangles sides meet.
<h3>Steps in construction of an equilateral triangle</h3>
The steps involved in the construction of an a equilateral triangle are:
- Place the compass point on A and measure the distance to point B
- Swing an arc of this size above or below of the segment.
- Do not change the span on the compass
- Then place the compass point on B and swing the same arc, intersecting with the first arc
- Label the point of intersection as the third vertex of the equilateral triangle.
Thus, the next step she should take is to draw arcs above and or below line AB to show where the triangles sides meet.
Learn more about construction of an equilateral triangle here:
brainly.com/question/11261696
#SPJ1
Answer:
x = -2
Step-by-step explanation:
2(x - 5) - 5x = -4
Distrubute the 2 into the parentheses
2x - 10 - 5x = -4
Add 10
+10 +10
2x - 5x = 6
Simplify
-3x = 6
Divide
÷ -3 ÷ -3
x = -2
The answer is:
x=-8
Because:
If you pick a number(-8) to fill in the equation written below
5x+20+5x=5x-20
After applying the -8 to x you get
-40+20-40=-40-20
When you simply the both sides you get
-60=-60
And that’s right -60 is equal to -60!