Answer: y= 45x miles/hour
Step-by-step explanation:
in the attachment
Answer:
14:6
21:9
28:12
Step-by-step explanation:
Given the initial ratio of 7:3, you can find equivalent ratios by multiplying the two numbers by the same factor:
7 x 2 = 14
3 x 2 = 6
14:6
7 x 3 = 21
3 x 3 = 9
21:9
7 x 4 = 28
3 x 4 = 12
28:12
Answer:
-25 + 75 = 50
Step-by-step explanation:
Since we don't know the value of the bar, we will call it x.
-25 + x = 50
Add 25 to both sides to find the value of x.
x = 75
You can also double check this answer by doing simple math.
-25 + 75 = 50
I want to say its
6ab12 + 2ab5
Answer:
<em>The area of the triangle DEF is 10.</em>
Step-by-step explanation:
<u>Area of a Triangle:</u>
A triangle of base B and height H (both must be perpendicular) has an area of:
![\displaystyle A=\frac{BH}{2}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20A%3D%5Cfrac%7BBH%7D%7B2%7D)
The image below shows the triangle formed by the points DEF. It's important to notice the points E and F lie on the same horizontal line because they both have the same y-coordinate.
This fact simplifies the calculations since we can easily compute the length the of base as the difference of their x-coordinates:
B=3-(-2)=3+2=5
Being the base of a horizontal line, the height of the triangle can be calculated as the difference of y-coordinates of D and the height of that line.
H=2-(-2)=4
With these two values, we calculate the area:
![\displaystyle A=\frac{5*4}{2}=10](https://tex.z-dn.net/?f=%5Cdisplaystyle%20A%3D%5Cfrac%7B5%2A4%7D%7B2%7D%3D10)
The area of the triangle DEF is 10.