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Illusion [34]
3 years ago
7

)

Mathematics
2 answers:
LuckyWell [14K]3 years ago
4 0

Answer:

-3 x^2 + 10x + 7

Step-by-step explanation:

Did it on edge

WITCHER [35]3 years ago
4 0

Answer:

-3 10 and 7

Step-by-step explanation:

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A certain colony of bacteria triples in length every 10 minutes. It's length is now 1 millimeter. how long will it be in 40 minu
iren [92.7K]
So we know that the bacteria grows 3x as much every ten minutes.  From this we know that it'll be 3 mm in 20 minute.  Continuing the pattern, we can figure out that in 40 minutes the bacteria will be 81 mm.

The pattern: 10min - 3  20min - 9  30min - 27  40min - 81
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3 years ago
What is n+31.53=62.4
tigry1 [53]
It would be 

N = 30.87



6 0
3 years ago
Read 2 more answers
On a morning of a day when the sun will pass directly​ overhead, the shadow of a 60​-ft building on level ground is 25 ft long.
AysviL [449]

Answer:

The shadow is decreasing at the rate of 3.55 inch/min

Step-by-step explanation:

The height of the building = 60ft

The shadow of the building on the level ground is 25ft long

Ѳ is increasing at the rate of 0.24°/min

Using SOHCAHTOA,

Tan Ѳ = opposite/ adjacent

= height of the building / length of the shadow

Tan Ѳ = h/x

X= h/tan Ѳ

Recall that tan Ѳ = sin Ѳ/cos Ѳ

X= h/x (sin Ѳ/cos Ѳ)

Differentiate with respect to t

dx/dt = (-h/sin²Ѳ)dѲ/dt

When x= 25ft

tanѲ = h/x

= 60/25

Ѳ= tan^-1(60/25)

= 67.38°

dѲ/dt= 0.24°/min

Convert the height in ft to inches

1 ft = 12 inches

Therefore, 60ft = 60*12

= 720 inches

Convert degree/min to radian/min

1°= 0.0175radian

Therefore, 0.24° = 0.24 * 0.0175

= 0.0042 radian/min

Recall that

dx/dt = (-h/sin²Ѳ)dѲ/dt

= (-720/sin²(67.38))*0.0042

= (-720/0.8521)*0.0042

-3.55 inch/min

Therefore, the rate at which the length of the shadow of the building decreases is 3.55 inches/min

8 0
3 years ago
What is the missing output value in the function table below
elena-s [515]

Answer:

2

Step-by-step explanation:

It makes sense because it goes down one by one in both the input and output values

8 0
3 years ago
What is the sample space for the event of spinning two spinners of 3 equal sections, numbered 1, 2, 3?
Setler79 [48]

Answer:

111111 aka i dont know

Step-by-step explanation:

6 0
3 years ago
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