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marin [14]
3 years ago
9

Can some one help me on these?!?!?!?

Mathematics
1 answer:
sergejj [24]3 years ago
5 0
I can't seem to find answers for #1-3 but I found the answer for #7, a common track is 400 meters, so I split that into thirds which equals 133.333333 meters, then I split a minute into quarters which equals 15 seconds so she is running 133.333333 meters every 15 seconds. So the answer is 45 seconds is all it takes her to run 400 meters.

I hope this helps.
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The table shows the concentration of a reactant in the reaction mixture over a period of time.
saveliy_v [14]
<h3>Option C</h3><h3>The average rate of the reaction over the entire course of the reaction is: 2.0 \times 10^{-3}</h3>

<em><u>Solution:</u></em>

Average rate is the ratio of concentration change to the time taken for the change

Average\ rate = \frac{ \triangle c }{\triangle t }

The concentration of the reactants changes 1.8 M to 0.6 M

here, the time interval given is 0 to 580 sec

Therefore,

Average\ rate = \frac{1.8-0.6}{580} \\\\Average\ rate = \frac{1.2}{580} \\\\Average\ rate \approx 2.0 \times 10^{-3}

Thus option C is correct

5 0
3 years ago
Help please answer really quick. I really need help. ( Math )
EleoNora [17]

Answer:

0.25 lbs

<h3>Explanation </h3>

You can translate the 1/2 a pound into 0.5lbs, which is equivalent. Then, this is the easier part. Sarah divides the clay into <u>t</u><u>w</u><u>o</u> equal pieces. This is asking you to halve 0.5lbs. The answer being 0.25lbs

5 0
3 years ago
Twice the difference of a number 8 equals 5
-Dominant- [34]

Answer:

2(n-8) = 5

Step-by-step explanation:

I'm assuming that its supposed to say "a number <em>and</em> 8"

6 0
2 years ago
Read 2 more answers
I need help with my math
Komok [63]
The answer to your question is 162

2=2
2*3=6
2*3*3=18
2*3*3*3=54
2*3*3*3*3=162
5 0
3 years ago
Adult tickets to the aquarium costs $22 each while child tickets cost 15 each. If a large group buys 32 tickets and paid 543 how
Masteriza [31]

Answer:

23 child tickets

Step-by-step explanation:

9 adult tickets

23 child tickets

543-22*9=345

345/15=23

9+23=32 tickets total

4 0
3 years ago
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