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Lorico [155]
2 years ago
10

Please answer this if you know it ( you only have to answer the problem it’s asking)

Mathematics
1 answer:
neonofarm [45]2 years ago
4 0

9514 1404 393

Answer:

  vertex: (-2, 4)

Step-by-step explanation:

Use your regression calculator to find the parameters of the quadratic model.

The vertex form equation is ...

  y = -3(x +2)^2 +4

so the vertex is (-2, 4).

__

The standard form equation is the expansion of the above:

  y = -3x^2 -12x -8

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Help us this correct
Olegator [25]

Answer: all of them are correct! great job!!!1

Step-by-step explanation:

.4 is 40 percent because you move the decimal two spaces to the right so it would be 40 percent, same as the others!

5 0
2 years ago
Read 2 more answers
Suppose y varies directly with x. When x is 2, y is 20. What is x when y is 50
yuradex [85]

Answer:

5

Step-by-step explanation:

x = 2 >>> (Multiply by 10) >>> y = 20

x = ? >>> (Multiply by 10) >>> y = 50

50 ÷ 10 = 5

x = 5 when y is 50

5 0
3 years ago
What would the decimal number 20 be in binary?
Inessa05 [86]
<span>10100 is the answer hope it helps you.

</span>
6 0
3 years ago
two pumps of different sizes, working together, can empty a fuel tank in 3 hours. the larger pump can empty the tank in 4 hours
bonufazy [111]
Suppose the larger pump alone can empty the tank in L hours, and the smaller pump can finish the job in S hours, then each hour the large pump empties 1/L portion of the tank, and the small pump empties 1/S per hour
Working together for three hours, they empty the whole tank, which is 100% of it, so 3/L+3/S=100%=1
Larger pump can empty the tank in 4 hours less than the smaller one, so L=S-4
replace L: 3/(S-4)+3/S=1
Make the denominator the same to solve for:
3S/[S(S-4)] +3(S-4)/[S(S-4)]=1
(3S+3S-12)/[S(S-4)]=1
(3S+3S-12)=[S(S-4)]
S^2-10s+12=0
use the quadratic formula to solve for S
S is about 8.6
The answer is not whole hour. 


8 0
3 years ago
Read 2 more answers
Asafa runs 0.75 kilometers in 6 minutes. Jemaine runs 3,000 meters in half an hour. Who ran at a faster rate?
Lorico [155]

Answer:

  • Asafa ran at a faster rate

Step-by-step explanation:

<u>Asafa's speed:</u>

  • 0.75 km/ 6 min = 750 m/ 6 min = 125 m/min

<u>Jemaine's speed:</u>

  • 3000 m / 30 min = 100 m/min

Asafa ran at faster rate as 125 m/min > 100 m/min

5 0
3 years ago
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