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Brut [27]
2 years ago
5

Please help need answer for a quiz

Mathematics
1 answer:
torisob [31]2 years ago
5 0

Answer:

first one with -1...21

Step-by-step explanation:

only one that follows quadratic formula format

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The fastest train on earth is Maglev, a Japanese train which runs at a
CaHeK987 [17]

Answer:

167.2 m/sec

Step-by-step explanation:

Convert 602 km/hr to m/sec, as follows:

602 km       1000 m

------------ * ----------------- = 602,000 m/hr

    hr               1 km

Recall that 1 hr = 3600 sec.  Convert 602,000 m/hr to m/sec:

602,000 m          1 hr

------------------ * ---------------- = 167.2 m/sec

     1 hr              3600 sec

5 0
2 years ago
If you graph y=2x+1 and y=x+1 how many times would the two lines intersect
krok68 [10]
Given that they follow the format for straight lines and are therefore straight lines, they would only intersect once and that would be at (0,1) where they both have a y intersect.

Hope this helps :)
3 0
3 years ago
Can someone help me out ? Don't just guess the answer :(
Monica [59]
1) 2m+6 / m² + 7m - 12  +  (m+2)/(m+4)

= 2(m+3) / (m+4)(m+3)  + (m+2)/(m+4)

= 2/(m+4) + (m+2)/(m+4)

= 2+m+2 / (m+4)

= m+4 / m+4

= 1  [ Option A ]

Answer 2) 3/ (x+4)  + 7/ (x-3)

=  3(x-3) + 7(x+4)/ (x² +x - 12)

= 3x-9 + 7x + 28 / (x² +x - 12)

= 10x + 19 / (x² +x - 12)  [ Option A ]

Hope this helps!
5 0
3 years ago
Read 2 more answers
Find the slope of the line that passes through (50, -70) and (77, 62). Simplify your answer and write it as a proper fraction, i
-Dominant- [34]

Answer:

44/9 or 4.8888888888889

Step-by-step explanation: ¯\_(ツ)_/¯

4 0
3 years ago
Read 2 more answers
Please hellllppppppp!!!!
Anna11 [10]
The difference is going to be 7
4 0
2 years ago
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