Answer:
x=4
Step-by-step explanation:
multiply both sides by 5: 2x-8= -5x+20
move the -5x over: 7x-8= 20
move the -8 over: 7x= 28
divide both sides by seven: x= 4
Answer:
Step-by-step explanation:
Given
Required
Complete the triangle (See attachment)
First, calculate side a using cosine's equation
Take square roots
The measure of B and C can then be calculated using sine's equation
So:
Cross multiply
Solve for sin B
Take arc sin of both sides
To calculate C, we make use of:
--- angles in a triangle
Collect like terms
Answer:
D
Step-by-step explanation:
one yard is 3 feet
100x3=300
This problem can be solved by using unit conversion. The trutle swimming at , to calculate its speed in :
We have to convert meter to kilometer, and second to hour as follow:
Answer:
the length is (1,3
Step-by-step explanation:
the length is 3,1