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nasty-shy [4]
3 years ago
10

Having trouble with this? Can someone explain this to me please?

Mathematics
1 answer:
Tema [17]3 years ago
3 0

Answer:

D

Step-by-step explanation:

D is the correct ratio. If his heart beats 12 times in 10 seconds, then it will beat 72 times in 60 seconds/1 minute if you use the proportion. D is the only correct ratio because it shows 72 beats:1 minute.

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Which expression can be used to calculateof formalin needed make this batch of 3200 pd the amount? The batch sugar 3% water 39%
Anit [1.1K]

The appropriate expression to identify the amount of formalin is: x = 3200 ÷ 100 × 44%

<h3>How to identify the amount of formalin?</h3>

To calculate the amount of formalin in this substance we must perform the following mathematical operation:

  • 3200 ÷ 100 = 32
  • 32 × 44% = 1,408

According to the above, the mathematical expression would be:

  • X = 3200 ÷ 100 × 44%

Learn more about mathematical expression in: brainly.com/question/14462529

#SPJ1

5 0
2 years ago
What is the interquartile range (IQR) of this data set?
Andreas93 [3]

Answer:

11 is the median of the entire data set

6 is the median of the lower half and 16 is the median of the upper half data scores...

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7 0
2 years ago
Read 2 more answers
Carlos started at sea level, climbed a
igomit [66]
19-14? I think first you need to find sea level.
8 0
3 years ago
The assembly of a machine takes 3/4 hour there are 12 steps in the assembly process what is the average time for each step
S_A_V [24]
We can solve this two different ways. I'll do both, and you choose which one makes the most sense:
We can divide the fraction 3/4 by 12. remember, when we divide fractions, we flip the second fraction and change the sign to multiplication:
3/4 ÷12     [starting equation]
3/4 x 1/12  [flip and change sign]
3/48    [now reduce]
1/16 Each step takes 1/16 of an hour. 
1/16 x 60 = 3 3/4, or 3.75 minutes

Second way:
3/4 of an hour is 3/4 of 60...45 minutes.
Still, we divide out:
45 ÷ 12   [starting equation]
3 9/12    [divide with remainder]
3 3/4 minutes...3.75 minutes

5 0
3 years ago
X−2y=−1
nikitadnepr [17]

b.

they're just intersecting.

6 0
2 years ago
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