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makkiz [27]
3 years ago
10

Find the difference between the square of 18 and the square of 9

Mathematics
1 answer:
NemiM [27]3 years ago
7 0

Answer:

18 x 9 = 162

Step-by-step explanation:

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ITO
Setler [38]

Using the speed - distance relationship, the time left before the appointed time is 27 minutes.

<u>Recall</u><u> </u><u>:</u>

  • Distance = speed × time

  • Let time = t

<u>At</u><u> </u><u>10mph</u><u> </u><u>:</u>

  • Distance = 10 × (t + 3) = 10t + 30 - - - (1)

<u>At</u><u> </u><u>12</u><u> </u><u>mph</u><u> </u><u>:</u>

  • Distance = 12 × (t - 2) = 12t - 24 - - - - (2)

<em>Equate</em><em> </em><em>(</em><em>1</em><em>)</em><em> </em><em>and</em><em> </em><em>(</em><em>2</em><em>)</em><em> </em><em>:</em>

10t + 30 = 12t - 24

<em>Collect</em><em> </em><em>like</em><em> </em><em>terms</em><em> </em>

10t - 12t = - 24 - 30

-2t = - 54

<em>Divide</em><em> </em><em>both</em><em> </em><em>sides</em><em> </em><em>by</em><em> </em><em>-</em><em> </em><em>2</em>

t = 54 / 2

t = 27

Hence, the time left before the appointed time is 27 minutes.

Learn more : brainly.com/question/25669152

8 0
2 years ago
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How to solve (28 + 7 + 6 + 3) x 1/2 <br> PLEZZ HELP!!!!!!!!!!!!!
Alenkasestr [34]

Answer:

22

Step-by-step explanation:

add everything in the parentheses first, then multiply by 1/2  (or divide by 2)

(28 + 7 + 6 + 3) x 1/2 = 44 x 1/2 = 22

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3 years ago
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shtirl [24]

Answer:

A ✓5 is the irrational number.

Step-by-step explanation:

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3 years ago
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What is the volume of this prism ?
Cloud [144]

Answer:160 B.

Step-by-step explanation: first you seperate the two rectangles. then find volume of both by multipling lenngh times with times height then add both of your volumes.

8 0
3 years ago
GUY HELP DID CLICK OF THE RIGHT ONE ?
kakasveta [241]

Answer:

c

Step-by-step explanation:

it just is that's the right book

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2 years ago
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