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Nata [24]
3 years ago
9

How to write (X+3)(x+5) in a equivalent expression

Mathematics
2 answers:
Blizzard [7]3 years ago
5 0

Answer:

x^2 +8x+15

Step-by-step explanation:

(X+3)(x+5)

FOIL

first  x^2

outer  5x

inner 3x

last  15

Add together

x^2 +5x+3x+15

x^2 +8x+15

Alex Ar [27]3 years ago
5 0

Answer:

Step-by-step explanation:

(x+3)(x+5)=x²+5x+3x+15

x²+8x+15 is equivalent to: (x+3)(x+5)

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Answer:

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Step-by-step explanation:

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Josh has been running for 6 min and completes a lap in 7 min. Gabe has been running for 2 min and completes a lap in 9 min.
Amanda [17]
So j completed 6/7 of a lap
gabe has completed 2/9 lap
so
1 j lap=7 mins s o
7j
j=num of laps
1 g lap=9 mins so
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then 6+j
and g+2

so
when will the times be equal
7j+6=9g+2
subtract 2 from both sides
7j+4=9g
divide both sides by 9
7/9j+4/9=g
so to get a whole number of laps, we must subsitute a number when it is multiplied by 7 then add 4, we get a multiplue of 9
so if j=2
7/9(2)+4/9=g=14/9+4/9=g=18/9=g=2
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the answer is 2 laps
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3 years ago
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