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dybincka [34]
3 years ago
9

I’m on a test so I need help

Mathematics
1 answer:
sladkih [1.3K]3 years ago
4 0
The answer is 2 y2 -9
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Factorize the following expression ab-a-b+1
dolphi86 [110]

Group 'em together

a b − a + 1 − b

a b − a = a ( b − 1 )

Notice that there will be a 1 as without it it'll simply be  ab

1 − b = 1 ( 1 − b )

Notice that it doesn't match with the upper one... so we'll change the signs

1 ( 1 − b ) = − 1 ( b− 1 )

(try to multiply them now!!

Jot them down in one expression

a ( b − 1 ) − 1 ( b − 1 )

You get!!!!!!

( a − 1 ) ( b − 1 )

5 0
3 years ago
Using fraction busting solve for X <br><br>1/x² + 1/x = 6/x² ​
777dan777 [17]
The solution for this question would be. x += 5 hope it helps, and im truly am sorry if its incorrect!
8 0
2 years ago
Dylan hikes 90 miles in 3 days. At that rate, how many days does it take him to hike a total of 240 miles?
zysi [14]

Answer:

8 days

Step-by-step explanation:

90/3 = 30 mi/day

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8 0
2 years ago
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It takes Maya 30 minutes to solve 5 logic puzzles, and it takes amy 28 minutes to solve 4 logic puzzles. use models, to show the
nalin [4]

Answer:

maya - 6 min per puzzle

amy - 7 min per puzzle

maya would finish first since her unit rate is smaller. for example, it takes maya 30 for 5 but it would take 35 for 5.

Step-by-step explanation:

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HELP PLEASE ASAP! BRAINLIESTTTT
erik [133]
1.) Which variable did you plot on the x-axis, and which variable did you plot on the y-axis?
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2.) Explain why you assigned the variables in that way.
because you can find the height of people(y) by plugging arm span in x. And i can find people's arm span(x) by plugging height as y
4 0
3 years ago
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