4 years ago

Please help and show work!!

Mathematics

2 answers:

Paladinen [302]4 years ago

6 0

B. Because 20 is greter than 18.

Anna [14]4 years ago

6 0

Answer:

the answer is B

Step-by-step explanation:

wel first because i said so 629314981

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If a car travels at an average speed of x miles per hour, how far would the car travel in 90 minutes?

professor190 [17]

Answer:

1 1/2x

Step-by-step explanation:

90 minutes is 1 and 1/2 hours so I put that with the x on the end so when you get the number times it by that

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3 years ago

The sum of two numbers is 126 and their difference is 42. what are two numbers

Snowcat [4.5K]

Answer:

Step-by-step explanation:

$x,\ y-numbers\\\\\text{The system of equations:}\\\\\underline{+\left\{\begin{array}{ccc}x+y=126\\x-y=42\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad2x=168\qquad\text{divide both sides by 2}\\.\qquad x=84\\\\\\\text{Put the value of}\ x\ \text{to the first equation:}\\\\84+y=126\qquad\text{subtract 84 from both sides}\\y=42$