Answer:
There are no options
Step-by-step explanation:
Collecting data through observation involves looking directly at an on going behavior about a phenomenon in its natural setting. Here you observed statistical data present in the web about the school's performance on SAT subject.
Step-by-step explanation:
Demographics are statistical data about a trend in a population such as scores, gender or income. In Observation method you simply check and see what has been happening in a population using available data concerning a phenomenon. Here , searching in the web for data about score on SAT subjects for the school will give you the idea of previous performance by students in that school which could help you come up with a hypothesis structured around these results.
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Answer:
no. who eat lunch special = 12
no. who eat dessert = 6
Step-by-step explanation:
Let x = no. who eat lunch special
y = no. who eat dessert
(1) 8x + 2y = 108 (2) 6x + 3y = 90
Divide thru by 2 Divide thru by 3
4x + y = 54 2x + y = 30
<u>-2x - y = -30</u>
2x = 24
x = 12 2(12) + y = 30
24 + y = 30
y = 6
Margo is correct since each girl got 7 pens and 9*7=63
I hope this helps
Ratio of areas of similar triangles is 9 : 25.
Solution:
Given data:
Ratio of sides of two similar triangles = 3 : 5
To find the ratio of areas of the triangles:
We know that,
<em>In two triangles are similar, then the ratio of their area is equal to the square of the ratio of their sides.</em>
Ratio of areas of similar triangles is 9 : 25.