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kotegsom [21]
3 years ago
7

A concert in the park started at 6:35p.m. It ended at 7:55. How long was the concert.

Mathematics
1 answer:
Sergeu [11.5K]3 years ago
8 0

An hour and 20 minutes

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The quantity a varies directly with b and c and inversely with dThe quantity d is tripledWhich of the following must be true for
EastWind [94]

Answer:

We have the next relation:

A = (b*d)/c

because we have direct variation with b and d, but inversely variation with c.

Now, if we have 3d instead of d, we have:

A' = (b*(3d))/c

now, we want A' = A. If b,c, and d are the same in both equations, we have that:

3bd/c = b*d/c

this will only be true if b or/and d are equal to 0.

If d remains unchanged, and we can play with the other two variables we have:

3b'd/c' = bd/c

3b'/c' = b/c

from this we can took that: if c' = c, then b' = b/3, and if b = b', then c' = 3c.

Of course, there are other infinitely large possible combinations that are also a solution for this problem where neither b' = b or c' = c

6 0
3 years ago
What is the y-intercept of this quadratic?
MAVERICK [17]

Answer:

(0,8)

Step-by-step explanation:

The line crosses the y axis at (0,8)

8 0
3 years ago
The length of a poster is 26 inches. The width of the poster is half its length. What is the area of the poster? HELP PLEASE!
xenn [34]

Answer:

338

Step-by-step explanation:

26 divided by 2 is 13. the width is 13. 26 times 13 is 338

hope this helps!

4 0
2 years ago
Read 2 more answers
The ellipse with center C(2, -3), vertices V(-8,-3) and V2(12,-3), and foci F1(-4,-3) and F2(8,-3). 6.
attashe74 [19]

Answer:

(x-2)²/100 + (y+3)²/64 = 1

Step-by-step explanation:

C (2,-3): h=2 k=-3

semimajor axis (CV): a=12-2=10

center-foci: c=8-2=6

semi minor axis: b² = a²-c²= 100 - 36 = 64

equation: (x-h)²/a² + (y-k)²/b² = 1

(x-2)²/100 + (y+3)²/64 = 1

6 0
3 years ago
Pls tell me it’s a,b,c,or d.Really need it thx
Serggg [28]

Answer: B and C are both correct so idk

Step-by-step explanation:

when you multiply the numbers outside of the choices, both answers in B and C are correct.

5 0
3 years ago
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