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bonufazy [111]
4 years ago
7

the seafloor spreads at a rate of aproximatly 10 cm per year. if you were to collect data on the spread of the seafloor each wee

k, which unit whoul you use to record your data. Explain?
Mathematics
1 answer:
Natali [406]4 years ago
5 0

Answer:

2,000 micrometers

Step-by-step explanation:

Well 10 cm in 50 or so weeks is 0.2 cm per week so you could use mm  

Then the measuremet would be about 2 mm per week.  

If the measurement is extremely accurate you could consider using micrometres.  

There are 1000 micrmetres in 1mm so in 1 week 2,000 micrometres

Hope this helps! <3 Jacoby


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36 is what percent of 40
laiz [17]
<span>divide the smaller number by the larger number
</span>
36/40 

<span>is 9/10 </span>

which is 90%
4 0
3 years ago
If a sample of 40 cars is selected, estimate the number of cars<br> traveling faster than 70 mph.
Umnica [9.8K]

Answer:

20ish

Step-by-step explanation:

I would need more info abt the question to answer it more exactly

5 0
2 years ago
Read 2 more answers
1 2 (–1.4m + 0.4) = m + 0.2
allsm [11]

First, you need to get rid of the parenthesis, so you need to distribute:

12(–1.4m + 0.4) = m + 0.2

-16.8m + 4.8 = m +0.2

Then subtract both sides by m:

-16.8m - m + 4.8 = m +0.2 - m

-17.8m + 4.8 = 0.2

Subtract both sides by 4.8:

-17.8m + 4.8 - 4.8 = 0.2 - 4.8

-17.8m = -4.6

Now, divide both sides by -17.8:

-17.8m/-17.8 = -4.6/-17.8

m ≈ 0.258

8 0
3 years ago
Which triangle defined by three points on the coordinate plane is congruent with the triangle illustrated, and why?
andreev551 [17]

Answer:

  D)  (-2, -3)(-4, -3)(-2, -9); because corresponding pairs of sides and corresponding pairs of angles are congruent

Step-by-step explanation:

For triangles to be congruent, it is not enough that corresponding angles are congruent. In addition, there must be at least one pair of corresponding sides that are congruent. (Then all pairs will be congruent.)

The points listed in choices B and D are points that form a right triangle with leg lengths 2 and 6. However, choice B only refers to the angle measures, and not the sides. Choice D is the correct one.

8 0
3 years ago
A jewellery shops sell 240 necklaces in a month. 180 of the necklaces were sold via the shop's website, the rest were sold in a
Aleks04 [339]

Answer: 3:1

Step-by-step explanation:

Since the jewellery shops sell 240 necklaces in a month and 180 of the necklaces were sold via the shop's website, this means that (240 - 180) = 60 necklaces were sold in a high street shop.

Therefore, the ratio of online sales to shop sales will be:

= 180 / 60

= 3 / 1

= 3:1

7 0
3 years ago
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