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Dmitry_Shevchenko [17]
3 years ago
7

Mhanifa please help! I will mark brainliest

Mathematics
1 answer:
suter [353]3 years ago
3 0

Answer:

<u>Use Pythagorean:</u>

  • a² + b² = c²
<h3>#1</h3>
  • x² = 13² - 5²
  • x² = 144
  • x = √144
  • x = 12
<h3>#2</h3>
  • x² = 7² + 4²
  • x² = 65
  • x = √65
  • Option D
<h3>#3</h3>
  • x² = 10² - 6²
  • x² = 36
  • x = √36
  • x = 6
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If the sale price is 30%, you turn that into a decimal and it will be .3. now you multiply the discount by 39 and it will get you 11.7. 11.7 is the money of discount so now all you have to do is subtract 11.7 from 39 and you shall get 27.3.
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3 years ago
The left and right page numbers of an open book are two consecutive integers whose sum is 347. Find these page numbers.
azamat

Let the first page = x

The second page would be x + 1

Add them together to equal 347

X + x + 1 = 347

Combine like terms:

2x + 1 = 347

Subtract 1 from both sides

2x = 346

Divide both sides by 2:

X = 173

The smaller page number is 173

The larger page number is 174

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The answer is 25.589
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A carnival game allows a group of players to each draw and keep a marble from a bag. The bag contains 5 gold marbles, 25 silver
WINSTONCH [101]
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The game could be made fair by adding back the marble that was drawn after each draw

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Yun Sil added twice as many new songs on her MP3 player as Matt, who added 5 more new songs on his MP3 player than Sierra. The s
AnnyKZ [126]

Answer:

Sierra=2songs

Matt=7songs

Yun SIl=14songs

step-by-step explanation:

Step 1

Let,The number of songs YunSil added = x

Number of songs Matt added = y

And number of songs Sierra added = z

Such that Matt has 5more than Sierra =y = 5 +z

Yun SIl has 2 times more thann Matt, x = 2y

x =2(5+z)=10 +2z

Step 2

The expression used to determine number of songs on each player given that the total of songs added on the three players =15 +z^3

Such that

YunSil+Matt+Sierra==15 +z^3

10+2z+ 5+z +z = 15 +z^3

4z +15 = 15 +z^3

4z=15-15+z^3

4z=+z^3

4=z^3/z

4=z^2

Z=√4 =2

Therefore Sierra has z=2songs

Matt has 5+z=5+2=7songs

YunSil has 2(5+z)= 2x7=14songs

7 0
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