Hey!
First, let's write the problem.
![5v+7\left(2.85\right)=28.7](https://tex.z-dn.net/?f=5v%2B7%5Cleft%282.85%5Cright%29%3D28.7)
Multiply
![7](https://tex.z-dn.net/?f=7)
with
![2.85](https://tex.z-dn.net/?f=2.85)
.
![5v+19.95=28.7](https://tex.z-dn.net/?f=5v%2B19.95%3D28.7)
Subtract
![19.95](https://tex.z-dn.net/?f=19.95)
from both sides.
![5v+19.95-19.95=28.7-19.95](https://tex.z-dn.net/?f=5v%2B19.95-19.95%3D28.7-19.95)
![5v=8.75](https://tex.z-dn.net/?f=5v%3D8.75)
Divide both sides by
![5](https://tex.z-dn.net/?f=5)
.
![\frac{5v}{5}=\frac{8.75}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B5v%7D%7B5%7D%3D%5Cfrac%7B8.75%7D%7B5%7D)
![v=1.75](https://tex.z-dn.net/?f=v%3D1.75)
Let me know if you have any questions regarding this problem!
Thanks!
-TetraFish
Given:
Area of the trapezoid is 39 ft².
The image contains a measurement of 11 ft and 15 ft on its bases.
Area of a trapezoid = (a + b)/2 * h
39 ft² = (11ft + 15ft)/2 * h
39ft² = 26ft/2 * h
39ft² = 13ft * h
39ft² ÷ 13ft = h
3ft = h.
The height of the trapezoid is 3 feet.
Answer:
A cyclist can travel 18 kilometres in 1.5 hours.
Step-by-step explanation:
The ratio for the cyclist's speed is 12 km/1 hr. If I were to find the ratio for kilometres per 1.5 hour, I would need to multiply the denominator of 1 (aka 1 hour) by 1.5 to get (1.5 hours). Whatever you do to the bottom, you have to do to the top. So I multiply the numerator of 12 (12 km) by 1.5 to get 18 km.
12 km/1 hr → 18 km/1.5 hrs
The area of the desktop is 12. 5 feet square
<h3>How to determine the area</h3>
The formula for area of a rectangle;
Area = length × width
Length = 2. 5 feet
Width = 5 feet
Area = 2. 5 × 5
Area = 12. 5 feet square
Thus, the area of the desktop is 12. 5 feet square
Learn more about area of a rectangle here:
brainly.com/question/14137384
#SPJ1
The answer should be x = 3