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raketka [301]
3 years ago
13

The 1990s and early 2000s could be considered the steroids era in a certain professional baseball​ league, as many players have

admitted to using the drug to increase performance on the field. If a sports writer wanted to compare home run totals from the steroids era to an earlier​ decade, say the​ 1960s, explain why this would be an observational study. Could the writer conclude that it was the steroids that caused the increase in home​ runs? Why or why​ not?
Mathematics
1 answer:
serg [7]3 years ago
4 0

Answer:

Step-by-step explanation:

This could be an observational study because an experiment was not carried out by the research to further verify this hypothesis. Individuals are observed and data is collected from such observation. No effort is made by the researcher to affect the outcome of such results.

This study alone is not enough to conclude about a cause and effect relationship between steroids and the increase in home​ runs as thus study is not randomized and cant control other factors or links bringing about this result.

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Linda watched a video. The introduction is 2 minutes, and the video is 7 minutes. What percentage of the video is the introducti
kolezko [41]

Answer:

22.222222%

Step-by-step explanation:

all together the entire video is 9 min and 2 of those are the intro so 2/9 and that as a percent is the answer

4 0
3 years ago
Read 2 more answers
If f(x) = 4x^2and g(x) = x+1, find (f•g)(x).
vazorg [7]

Answer:

(f.g)(x)=4x^3+4x^2

Step-by-step explanation:

f(x) = 4x^2and g(x) = x+1, (f•g)(x)=?

(f.g)(x)=f(x)*g(x)

(f.g)(x)=4x^2*(x+1)

(f.g)(x)=4x^3+4x^2

hope it helps. .brainliest please

4 0
3 years ago
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Adrian belter hit 48 home run during the 2004 major league baseball season, but only hit 19 home runs in 2005 season. By what pe
Alex777 [14]
Difference = 48-19
= 29
production decrease = 29 × 100/ 48
= 60.41%
5 0
2 years ago
Write the nth term of the following sequence in terms of the first term of the sequence.
vovikov84 [41]

Givens

Sequence 2, - 4, 8, -16, 32 ....

First term = a = 2

Problem

Find the nth term

tn = (-1 )^(n -1) * (a)^n answer or

tn = (-1)^(n - 1) * 2^n

where a is defined as the first term (it usually is given that designation).

Try a few to make sure the formula is correct

<em>n = 1</em>

t1 = (-1)^(1 - 1) * 2^1

t1 = (-1)^0 * 2

t1 = 1 * 2 = 2

<em>n =2</em>

t2 = (-1)^(2 - 1) * 2^2 = (-1)^1 * 4 = -4

6 0
3 years ago
The rate of planting the grass is ` x per square meter. Find the cost of planting the grass on a
kotegsom [21]

Step1: Find the area of the triangular lawn

             Given, base of the triangle is y metres and the height is z metres

             Area of the triangle =

2

1

​

× base × height

             Therefore, area of the triangular lawn =

2

1

​

yz metre  

2

.

Step 2:Find the cost of planting the grass

             Rate of planting the grass is Rs. x per square metre.

             Therefore, the cost of planting the grass on a triangular lawn =cost per square meter × area of the triangular lawn

              =x×

2

1

​

yz=

2

1

​

xyz

Hence, the cost of planting the grass on a triangular lawn whose base is y metres and  height is z metres is Rs.  

2

1

​

x y z.

Step-by-step explanation:

3 0
2 years ago
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