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Dominik [7]
3 years ago
7

Compare the two groups of data. Which statement is true? A) on average test scores for Mr. Scarlet's class and Mrs. Plum's class

are equal B) on average test scores for Mrs. Plum's class are 4 points higher than Mr. Scarlet's class C) on average test scores for Mrs. Plum's class are 6 points higher than Mr. Scarlet's class D) on average test scores for Mrs. Plum's class are 14 points higher than Mr. Scarlet's class
Mathematics
2 answers:
Genrish500 [490]3 years ago
6 0

Answer:d

Step-by-step explanation:

ivann1987 [24]3 years ago
4 0

Answer:

A

Step-by-step explanation:

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Use the formula you learned to answer the question. If a dogsled team travels 4 kilometers in 8 minutes, what is the speed of th
bonufazy [111]

Answer

C-0.5km

Step-by-step explanation:

you can simplify both the kilometers and minutes to 1 kilometer in 2 minutes or 0.5 kilometer in 1 minute.  Hope this helps!

6 0
3 years ago
Is this true or false?
pishuonlain [190]
It is trueee....... hope this helps
8 0
3 years ago
Please explain I really need help
velikii [3]

Answer:

1. 1343 years

2. 9 hours

3. 39 years

Step-by-step explanation:

1. Given, half-life of carbon = 5730 years.

∴ λ = 0.693/half-life of carbon = 0.693/5730 = 0.000121

If N₀ = 100 then N = 85

Formula:- N = N₀*e^(-λt)

∴ 85 = 100 * e^(-0.000121t)

∴㏑(-0.85)=-0.000121t

∴ t = 1343 years

2. Given half-life of aspirin = 12 hours

λ = 0.693/12 = 0.5775

Also N₀ = 100 then 70 will disintegrate and N = 30 will remain disintegrated.

∴ 70 = 100 *e^(-0.05775t)

0.70 = e^(-0.05775t)

㏑(0.70) = -0.05775t

∴ t = 9 hours

3.  The population of the birds as as A=A₀*e^(kt)

Given that the population of birds fell from 1400 from 1000, We are asked how much time it will take for the population to drop below 100, let that be x years.

The population is 1400 when f = 0, And it is 1000 when f = 5

We can write the following equation :

1400 = 1000e^(5t).

∴1400/1000 = e^(5k)

∴ k = ㏑(1.4)/5

We need to find x such that 1400/100 = e^(xk)

14 = e^(xk)

∴ x = 39 years

5 0
3 years ago
I will report files and unhelpful answers!
anzhelika [568]

Answer:

m > = 1204 minutes

Step-by-step explanation:

28 + 0.05m>=88.20

Subtract 28 from both sides. Then divide both sides by 0.05 to get:  

m >=1204 minutes

4 0
3 years ago
Read 2 more answers
Convert the following into metres.<br> A- 22cm<br> B- 180km<br> C-300mm
Alecsey [184]

<em>A) 22cm</em>

<em>(</em><em> </em><em>divide the length value by 100</em><em>)</em>

<em>2</em><em>2</em><em>/</em><em>1</em><em>0</em><em>0</em><em> </em><em>which</em><em> </em><em>gives</em><em> </em><em>you</em><em>:</em>

<em><u>=</u></em><em><u>0.22m</u></em>

<em>B</em><em>)</em><em> </em><em>180km</em>

<em>(</em><em> </em><em>multiply the length value by </em><em>1000</em><em>)</em>

<em>1</em><em>8</em><em>0</em><em>×</em><em>+</em><em>1</em><em>0</em><em>0</em><em> </em><em>which</em><em> </em><em>gives</em><em> </em><em>you</em><em>:</em>

<em><u>=</u></em><em><u>180000m</u></em>

<em>C</em><em>)</em><em> </em><em>300mm</em>

<em>(</em><em> </em><em>divide the length value by 1000</em><em>)</em>

<em>3</em><em>0</em><em>0</em><em>/</em><em>1</em><em>0</em><em>0</em><em>0</em><em> </em><em>which</em><em> </em><em>gives</em><em> </em><em>you</em><em>:</em>

<em><u>=</u></em><em><u>0.3m</u></em>

<em> </em>

4 0
2 years ago
Read 2 more answers
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