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yan [13]
3 years ago
14

What is the equation for the model?

Mathematics
1 answer:
gayaneshka [121]3 years ago
8 0
B five x equal to 4
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11. The completion of a chemical reaction is expressed by the equation y = 300 - 4x - XP, where y is
alina1380 [7]

Answer:

The reaction ca occur at 10 degree Celsius or -14 degree Celsius.                                          

Step-by-step explanation:

We are given the following in the question:

The completion of a chemical reaction is expressed by the equation

y = 300 - 4x -x^2

where y is  the number of seconds needed to complete the reaction and x is the temperature in degrees Celsius  at which the reaction occurs.

We have to find the temperature at which the reaction occurs, if the completion time of reaction is 160 seconds.

Putting y = 160

160 = 300 - 4x -x^2\\x^2 + 4x  - 140 = 0\\x^2 + 14x -10x -140 = 0\\x(x+14)-10(x+14)=0\\(x-10)(x+14) = 0\\(x-10) =0, (x+14) =0\\x = 10, x = -14

Thus, the reaction ca occur at 10 degree Celsius or -14 degree Celsius.

5 0
3 years ago
Help me please! Thanks
Sunny_sXe [5.5K]
Hope this helps! have a nice day/night

8 0
3 years ago
If you are asked to provide a set of two or more numeric answers, separate them with commas. For example, to provide the year th
garik1379 [7]

Answer:  Perimeter = 66 cm and area =66\ m^2

Step-by-step explanation:

The perimeter of rectangle is given by :-

P=2(l+w), where l is length and w is width of the rectangle.

Given : A rectangle has a length of 5.50 m and a width of 12.0 m .

Then, the perimeter of rectangle :

P=2(12+5.50)\\\\\Rightarrow\ P=2(17.50)=35\ m

Also, area of rectangle is given by :-

A=l\times w=5.50\times12=66 \ m^2

Area of rectangle = 66\ m^2

3 0
3 years ago
Me ayudan con el problema dice Arturo compro 6 quesos de 1/4 de Kg cada uno Cuantos Kg de queso tiene?
stepladder [879]

Answer:

1 1/2 kg de queso

Step-by-step explanation:

De la pregunta anterior, sabemos que:

1 queso = 1/4 kg

6 quesos = x kg

Multiplicar cruzada

1 queso × x kg = 6 quesos × 1/4 kg

x kg = 6 quesos × 1/4 kg / 1 queso

x kg = 3/2 kg

x kg = 1 1/2 kg de queso

6 0
3 years ago
It takes Flora 3 hours to knit a pair of socks and 7 hours to knit a pair of gloves. If she spent 100 hours knitting a total of
gavmur [86]
3 pairs of socks and 13 pairs of gloves
6 0
3 years ago
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