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Natasha_Volkova [10]
3 years ago
11

Which of the following is the value of 2x' +5x+9 when x =10?

Mathematics
1 answer:
stealth61 [152]3 years ago
7 0

Answer:

The correct answer is: 259.

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I do not understand this at all, can someone please help me with the steps in each question
Mandarinka [93]

Answer:

285 min

275 min

chi

tie

Step-by-step explanation:

swim - 1.5 km

bicycle ride - 40 km

run - 10 km

1) Alexandra

swim time = distance / velocity = 1.5 / 5 = 0.3 hr = 18 min

transition 1 time = 4 min

cycling time = distance / velocity = 40 / 15 = 2.6666667 hr = 160 min

transition 2 time = 3 min

run time = distance / velocity = 10 / 6 = 1.6666667 hr = 100 min

so total time to complete the triathlon is

= 18 + 4 +160 + 3 +100

= 285 min = 4.75 hrs

2) Chi

swim time = distance / velocity = 1.5 / 6 = 0.25 hr = 15 min

transition 1 time = 5 min

cycling time = distance / velocity = 40 / 15 = 2.6666667 hr = 160 min

transition 2 time = 5 min

run time = distance / velocity = 10 / 7.5 = 1.3333333 hr = 80 min

got flat tire that took 10 min to fix

so total time to complete the triathlon is

= 15 + 5 + 160 + 5 + 80 + 10

= 275 min

3) Alexandra won the race by 10 min

4)even though chi got flat tire , chi still won the race by 10 min,

if it took 20min to fix flat tire both their times would be 285 min and it would have been a tie.

6 0
3 years ago
ILL GIVE BRAINLIEST! HELP!
KonstantinChe [14]

Answer:

is B))))

Step-by-step explanation:

brainliest pls

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7 0
3 years ago
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PLEASE I NEED HELP IM ALREADY FAILING Antonio and Juan are in a 4-mile bike race. The graph below shows the distance of each rac
aliina [53]
A) Juan and Antonio both bike 4 miles.
b) they are at the same location 7 minutes into the race
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7 0
3 years ago
2/9 x 3 =<br> what is the answer
Aleksandr [31]

Answer:

2/3

Step-by-step explanation:

when multyplying a fraction and a whole number, its better if you put the whole number over 1 to make it a fraction, now you can multiply fractions easier, just multipl accross, 2*3 is 6, 9*1 is 9, now you have a fraction of 6/9 which can be simplified to 2/3

3 0
3 years ago
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SOMEONE PLEASE PLEASE HELP!!!!!!!!! pls I’m beggin (show work) <br><br> give explanation (optional)
Mamont248 [21]

Answer:

Step-by-step explanation:

200ft  (1mile/5,280ft)  60ft/1hr  200×60/5,280  = 2.27272727273

and round it to the2 decimal is 2.27

6 0
3 years ago
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