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tino4ka555 [31]
3 years ago
13

Which option identifies which of the two studies described has the more reliable data set and explains why?

Mathematics
2 answers:
almond37 [142]3 years ago
6 0

Answer:

Study 2 because it has been done 100 times

Step-by-step explanation:

Anna35 [415]3 years ago
4 0
The answer is study 2
Step by step explanation:
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It takes 15 minutes to fill a 375 gallon tank with oil how many gallons are pumped into the tank in 1 minute
Nikitich [7]

Answer:

25

Step-by-step explanation:

It takes 15 minutes to fill a 375 gallon tank with oil how many gallons are pumped into the tank in 1 minute

375÷15=25

5 0
3 years ago
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21. What must be added to -9 to have a sum of 20?
Inga [223]

Answer:

21C

22D

23B

24C

25A

Step-by-step explanation:

7 0
2 years ago
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I need help with #18,20,22 and 24. Please show your work and I'm really thankful for your help as soon as possible!
Artist 52 [7]
I'll start 18 and 22 for you, and you should then be able to do the rest on your own!

For 18, what we literally do is apply the distance formula for all the points and add them up. For B to C, we get the distance between them to be
sqrt((x1-x2)^2+(y1-y2)^2)=sqrt((0-4)^2+(3-(-1))^2)=sqrt((-4)^2+4^2)=sqrt(16+16)=sqrt(32). Repeat the process for C to E, E and F, and F to B then add the results up to get your answer!

For 22, since the area of a rectangle is length*width (we know given the right angles and that the opposite sides are equal in how long they are), we can multiply 2 perpendicular lines, for example, BC and CE to get sqrt(32)*sqrt(8)=16 as the area
4 0
3 years ago
If M=5x^2+7x-4 and N=-3x^2-4x+5, then M-N equals
Phantasy [73]

Answer:

8x² + 11x - 9

Step-by-step explanation:

M - N

= 5x² + 7x - 4 - 1(- 3x² - 4x + 5) ← distribute parenthesis by - 1

= 5x² + 7x - 4 + 3x² + 4x - 5 ← collect like terms

= 8x² + 11x - 9

4 0
3 years ago
Graph the function. Identify the vertex and axis of symmetry.
aalyn [17]
A. axis of symmetry: vertex: (–0.5, –0.5)
7 0
3 years ago
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