Let's translate this from words to equations: So (4x+1)/3=7 is our first equation. Multiply by 3, subtract 1, then divide by 4 to get x. Notice it is the exact opposite of what Joe did to get back to where he started. Once you get x, just follow the instructions, so divide by 3, add 1 and multiply by 4. You will end up with a fraction since the original number is not evenly divisible by 3.
Answer:
1 and 15
Step-by-step explanation:
8-7=1
8+7=15
Square root of 3 is not rational, it is an irrational number
Answer:
Step-by-step explanation:
As these triangles are similar, every side and angle corresponds and this is key to calculating this equation.
First, look at the side that is labeled 
and find the corresponding side on the other triangle. Write this out as a fraction as shown below. Now find two corresponding sides that are both marked (the base lines) and write them out as a fraction as well (note that which ever triangle you are solving for, it's numbers will go on the top of the fraction)
We want to get the 
by its self and at the moment it is divided by 36. To remove the 36, we need to multiply both sides of the equation by 36
36 x x 36
This cancels out both the 36s on the left leaving us with
x 36
all that needs to happen now is to remove the +8 so we are just left with . to do this, just subtract 8 from both sides and we are left with
x 36 - 8
calculate 38 ÷ 60 x 36 - 8 = 14.8
∴
I hope this was helpful and not too long :-)
20100 = 16000 * (1.02)^ t
20100/16000 = 1.02^t
1.25625 = 1.02^t
log 1.25625 = t * log 1.02
t = log 1.25625 / log 1.02
= 11.5
