Yes they do, Hope this helps :p
Answer:
It has to be a single digit between 1 and 10
B I’m not 100% sure but I think
Answer:

Step-by-step explanation:

Use cross products to simplify the equation. Multiply the denominator of the second fraction by the numerator of the first fraction, and the denominator of the first fraction by the numerator of the second,

Simplify,

Inverse operations,

Answer:
First of read all formulas
Step-by-step explanation:
Calculate 50 *7 and add 350 and 200