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DanielleElmas [232]

2 years ago

5

According to the graph above,what is the unit rate of a human's heartless per minute

1 answer:

kari74 [83]2 years ago

5 0

The unit rate for the graph above is 60 heartbeats per minute. Half of 2 is 1 so go to the 1 min. mark and go up until you reach the line graph and it says 60. Do the same for the 2 min. mark and go up until you reach the line graph and it'll say 120. 60 ÷60=1 and 120 ÷ 60= 2

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Marla bought one necklace and two bracelets for $67.50. Use the following information to determine the amount she paid for each

alexdok [17]

Ooh, scary math

n+2b=67.5
n=27
27+2b=67.5
minus 27 both sides
2b=40.50
divide both sides by 2
b=20.25

a bracelet costs $20.25

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Ede4ka [16]

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Step-by-step explanation:

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cupoosta [38]

Answer:

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Step-by-step explanation:

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Mariana [72]

[A+7= 28] is the correct equation I believe, though I may be wrong.

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How do I write the sum of 6x and 2x is at least 39 ?

tatiyna

<h2>Put x = $\dfrac{39}{8}$ I write the sum of 6x and 2x is at least 39 .</h2>

Step-by-step explanation:

We have,,

6x and 2x

To find, the value of x = ?

According to question,

The sum of 6x and 2x is at least 39

∴ 6x + 2x = 39

⇒ 8x = 39

⇒ x = $\dfrac{39}{8}$

∴ The value of x = $\dfrac{39}{8}$

Thus, put x = $\dfrac{39}{8}$ I write the sum of 6x and 2x is at least 39 .

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