3 years ago

Fuads model racing car drives

Mathematics

2 answers:

adell [148]3 years ago

6 0

Answer:

Step-by-step explanation: 7 seconds

Keith_Richards [23]3 years ago

4 0

$\frac{3ft}{1sec} = \frac{21ft}{xsec} 
\\ Cross\ multiply
\\ 3x = 21
\\ (3x)/3 = 21/3
\\ x = 7seconds$

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