Jina's dance recital started at 4:46 PM. It ended at 6:13 PM. How long did the recital last?

Mathematics

2 answers:

mojhsa [17]2 years ago

7 0

Answer:

2 hour and 7 minutes is the answer

Tamiku [17]2 years ago

4 0

Answer:

Jina's recital lasted 2 hours and 7 minutes

Hope that helped

Step-by-step explanation:

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Answer in factored form x^2+11x+7

KATRIN_1 [288]

X² + 11x + 7

because 7 is a prime number, this doesn't factor prettily. you'll want to use the quadratic formula; if you aren't familiar with it, i'd either research it or look it up in your textbook, because it's clunky and not easily understood in this format:

(-b ± √((b)² - 4ac))/(2a)

in your equation x² + 11x + 7 ... a = 1, b = 11, and c = 7. what you do is you take the coefficients of every term, then plug it into your equation:
(-11 ± √((11)² - 4(1)(7))/(2(1))

not pretty, i know. but, regardless, you can simplify it:
(-11 ± √((11)² - 4(1)(7))/(2(1))
(-11 ± √(121 - 28))/2
(-11 ± √93)/2

and you can't simplify it further. -11 isn't divisible by 2, and 93 doesn't have a perfect square that you can take out from beneath the radical. the ± plus/minus symbol indicates that you have 2 answers, so you can write them out separately:

(x - (-11 - √93)/2) and (x + (-11 - √93)/2)

they look confusing, but those are your two factors. they can be simplified just slightly by changing the signs in the middle due to the -11:

(x + (11 + √93)/2) (x - (11 - √93)/2)

and how these would read, just in case the formatting is too confusing for you: x plus the fraction 11 + root 93 divided by 2. the 11s and root 93s are your numerator, 2s are your denominator.

7 0

3 years ago

Hey! if you have time can u solve this for me

WITCHER [35]

Answer:

I'm guessing C

Step-by-step explanation:

I don't think this is the correct way to answer it. But I litterly rotated it in my brain and got 7.5....

5 0

2 years ago

HELP MEE ASAP PLSSSS ♥

Oksanka [162]