Answer: -13w - 7
Step-by-step explanation:
-6w + (-8) + 1 + (-7w)
Combine the like terms
-8 + 1 = -7
-6w + (-7) + (-7w)
-6w + (-7w) = -13w
-13w + (-7)
However, because adding a negative number is the same as subtracting the number as a positive, you can just make it -13w - 7
First, set a variable.
Let x = the number of songs bought.
Each song costs 2 dollars. So, we have our first term: 2x.
And there is a fee of 5 dollars for using the website.
2x + 5
And she can't spend any more than 40 dollars. Which means she can spend 40 and under.
So, 2x + 5 ≤ 40 is the answer.
Answer:
- perimeter: 5/8
- area: 25/64
Step-by-step explanation:
You want the ratios (red to blue), of perimeter and area, given that corresponding sides have the ratio red to blue = 5 to 8.
<h3>Perimeter ratio</h3>
The ratio of perimeters is the ratio of corresponding side lengths:
red to blue = 5 / 8
<h3>Area ratio</h3>
The ratio of areas is the square of the ratio of corresponding side lengths:
red to blue = (5 to 8)² = 25 / 64
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<em>Additional comment</em>
Ratios are customarily expressed in any of three equivalent forms:
- 5 to 8
- 5:8
- 5/8 "fraction" form
Answer:
E = 1.09
Step-by-step explanation:
Elasticity measures the sensitivity of demand with changes in income.
Elasticity of Income has the formula:
[Change in Demand/Demand]/[Change in Income/Income]
So, now, we have:
D_0 = 2
D_1 = 1
I_0 = 8
I_1 = 15
Now, Elasticity (E) is:
E = [(1-2)/(1+2)]/[(15-8)/(15+8)]
E = [1/3]/[7/23]
E = 1.09
