Answer:
45=810=2025=2835=4050=140175...
Step-by-step explanation:
<u>Answer</u>:
b = 4a
<u>Step-by-step explanation</u>:


<em>changing sides changes sign division to multiplication.</em>
Answer:
50
Step-by-step explanation:
-2.5 × -20
negative multiply negative equals positive
(-) × (-) = (+)
so, the answer would be positive.
-2.5 × -20
= <u>5</u><u>0</u>