Answer:
This means that Alex answered 14 questions correctly
Step-by-step explanation:
<u>Step 1: Find an equation</u>
20 * 0.7 = x
<u>Step 2: Multiply</u>
20 * 0.7 = x
14 = x
Answer: This means that Alex answered 14 questions correctly
Step-by-step explanation:
the answer in this picture
Answer:
we have"

Step-by-step explanation:
2^2+b^2=12^2
4+b^2=144
144-4=140
√140 = √b
11.83 = b