Mental math is something that can be done i your head.
for example you can do 1+1 in your head and you dont need a calculator or paper to do it so i would be called mental math
Hope this helps
remember if you ever need anything and you dont want to waste points you can just post it on my pfp or message me the question
Answer:
<h3>a)a+c=150,10.25a+7.75c=1470</h3>
Step-by-step explanation:
<h3>to understand this</h3><h3>you need to know about:</h3>
- system of linear equation
<h3>let's solve:</h3>
according to the first condition
according to the second condition
Five divided by the difference of a number and 12 equals the quotiene of 10 and the sum of the number and five
Answer:
x=2
Step-by-step explanation:
Answer:
7
Step-by-step explanation:
Reflection is a rigid transformation, so the side length does not change.
A'B' = 7
