Answer:'
-9.7 minus, in 13
Step-by-step explanation:
Answer:
5.5%
Step-by-step explanation:
To solve this problem we can use a modified version of the simple interest formula which is shown below:
![r=\frac{I}{Pt}](https://tex.z-dn.net/?f=r%3D%5Cfrac%7BI%7D%7BPt%7D)
<em>I = interest amount</em>
<em>P = principal amount</em>
<em>t = time (years)</em>
<em />
The first step is to find the interest gained from the investment.
![3,123.75-2,450=673.75](https://tex.z-dn.net/?f=3%2C123.75-2%2C450%3D673.75)
Next, plug in the values into the equation:
Multiply the bottom values
Divide the values
![r=.055](https://tex.z-dn.net/?f=r%3D.055)
The last step is to convert 0.055 into a percent:
![0.055(100)=5.5](https://tex.z-dn.net/?f=0.055%28100%29%3D5.5)
The interest rate is 5.5%
So y+x=2
x-y=4
one way is subsituteion where yousubisutte one of the number for another exg
x-y=4
add y to both sides
x=y+4
subsitute y+4 for x in x+y=2
y+4+y=2
2y+4=2
subtract 4 from both sides
2y=-2
divide both sides by 2
y=-1
subsiutte
x+y=2
x-1=2
x=3
or elimination
x+y=2
x-y=4
add the two equations and cancel the y terms
x+x+y-y=2+4
2x=6
divide both sides by 2
x==3
subsitute
x+y=2
3+y=2
y=-1
so x=3
y=-1
Answer:
Yes, the scale factor is 4.
Step-by-step explanation:
If you times the length, 3, and the width, 5, by 4, you'll get 12 as your length and 20 as your width.