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3 years ago

9

Give the answer with the appropriate unit of measure. (7 meters/1 minute)(60 minutes)

1 answer:

Marat540 [252]3 years ago

8 0

Assuming this is written as 7m/min * 60min the correct units will be 420meters

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If a+b=5 and a-b=4 then b^2-a^2 =

Anna007 [38]

Answer:

$a + b = 5 \\ a \: = 5 - b \\ a - b = 4 \\ 5 - b - b = 4 \\ 5 - 2b = 4 \\ 5 - 4 = 2b \\ 1 = 2b \\ \frac{1}{2} = \frac{2b}{2} \\0.5 = b \\ b = 0.5 \\ a = 5 - b \\ = 5 - 0.5 \\ = 4.5 \\ {a \: }^{2} - {b}^{2} = ( {4.5}^{2}) - ( {0.5}^{2} ) \\ = 20.25 - 0.25 \\ = 20 \\ {a}^{2} - {b}^{2} = 20$

Step-by-step explanation:

HOPE THAT THIS IS HELPFUL.

HAVE A GREAT DAY.

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3 years ago

Please help !!!!!! <br><br> -2x - 5 = -11

Anna35 [415]

Answer:

x=3

Step-by-step explanation:

So -11 + 5 = -6, not -16.

Then divide -6 and -2x by -2 and x=3

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3 years ago

Sally can paint a room in 4hours while it takes Steve 3 hours to paint the same room. How long would it take them to paint the r

Pachacha [2.7K]

Answer:It would take 1.700 hours.

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2 years ago

Read 2 more answers

Plzzz help need it right nowww.....

Hunter-Best [27]

$2x-5= - 20$

$
2x=-20+5
 
$ $Add \ 5 \ to \ both \ sides
$

$2x=-15

 
$

$x=- \dfrac{15}{2}$ $Divide \ both \ sides \ by \ 2$

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3 years ago

At Brunswick Elementary school, 2/5 of six-grade students have at least one pet. If school has 181 sixth graders, about how many

VashaNatasha [74]

Answer: 72.4

Step-by-step explanation:

Fraction of six-grade students that have at least one pet = 2/5

Number of sixth graders at Brunswick Elementary school = 181

The number of sixth graders that own own pets will be:

= 2/5 × 181

= 72.4

6 0

3 years ago