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lesya [120]
3 years ago
9

Jenny, Keith, and Joanna participated in a mini-

Mathematics
1 answer:
Elan Coil [88]3 years ago
4 0

Answer:

  • Jenny 1.75 miles, Keith 4.75 miles, Jonna 9.5 miles

Step-by-step explanation:

<u>Distance per person:</u>

  • Jenny - x, Keith - y, Joanna - z

<u>Equation as per given:</u>

  • y = x + 3
  • z = 2y = 2(x + 3)
  • x + y + z = 16

<u>Substitute and solve for x:</u>

  • x + (x + 3) + 2(x + 3) = 16
  • 2x + 3 + 2x + 6 = 16
  • 4x = 7
  • x = 7/4 = 1.75

Then

  • y = 1.75 + 3 = 4.75
  • z = 4.75*2 = 9.5
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30 points! PLS HELP IF U SMART
ANTONII [103]

Answer:

y = 40             x = 80

Step-by-step explanation:

520 = 3.25x + 6.5y     and   x+y=120

x+y=120

x = 120-y

520 = 3.25(120-y)+6.5y

520 = 390-3.25y+6.5y

520 = 390+3.25y

130=3.25y

40 = y

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x = 120-(40)

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Step-by-step explanation:

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Mai had 5 candy bars she ate half of one candy bar and dicided to distribute the remaining bars between her two sisters and her
gogolik [260]

━━━━━━━━━━━━━━━ ♡ ━━━━━━━━━━━━━━━  

So there are five candy bars.

Herself and two sisters equals 3 people in total.

This is a graph of 5 candy bars, each line being 1/2.

━ ━

━ ━

━ ━

━ ━

━ ━

If she ate half of one... the graph would become this.

━ ━

━ ━

━ ━

━ ━

━

Now there are 9 halves. You need to split the 9 halves for 3 people. 9 divided by 3 is 3.

Each person gets 3 halves, or 1 and 1 half.

Mai: ━ ━ ━

Sister 1: ━ ━ ━

Sister 2: ━ ━ ━

Altogether that is 9 halves, AKA the number of halves Mai had after she ate 1/2.

The amount Mai ate in the first place: ━

9 halves plus 1 half, equals 10 halves. Each whole has 2 halves. 10 divided by 2 is 5, AKA the number of candy bars she had in the first place.

━━━━━━━━━━━━━━━ ♡ ━━━━━━━━━━━━━━━  

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