PLEASE HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

Sauron [17]3 years ago

4 0

X=12

(10(12)-20) = 120-20 = 100

(6(12)+8) = 72+8=80

100+80 = 180

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A runner’s goal is to complete a mile in 4 minutes or less. The runner’s speed is 20 feet per second. Does the runner meet the g

Scilla [17]

Answer:

no, because the runner is short by 480 feet

Step-by-step explanation:

there are 5280 feet in 1 mile

5280 feet= 1 mile 20 feet= 1 second (times by 240)

4800 feet= 240 seconds

he is 5280-4800= 480 feet less

please give me brainliest!!<3

3 0

3 years ago

In the park, Bryce hikes 4 1/2 mi and Jessie hikes 6 7/16 mi. How much farther does Jessie hike than Bryce? Express your answer

soldier1979 [14.2K]

is simply the difference of both amounts, but firstly let's convert the mixed fractions to improper, and subtract.

$\bf \stackrel{mixed}{4\frac{1}{2}}\implies \cfrac{4\cdot 2+1}{2}\implies \stackrel{improper}{\cfrac{9}{2}}
\\\\\\
\stackrel{mixed}{6\frac{7}{16}}\implies \cfrac{6\cdot 16+7}{16}\implies \stackrel{improper}{\cfrac{103}{16}}
\\\\[-0.35em]
\rule{34em}{0.25pt}\\\\
\stackrel{Jessie}{\cfrac{103}{16}}-\stackrel{Bryce}{\cfrac{9}{2}}\implies \stackrel{\textit{our LCD is 16}}{\cfrac{(1)103-(8)9}{16}}\implies \cfrac{103-72}{16}\implies \cfrac{31}{16}\implies 1\frac{15}{16}$