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My name is Ann [436]
3 years ago
5

How to do this? And the answer

Mathematics
1 answer:
charle [14.2K]3 years ago
3 0
Round and you will get your answer
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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
Which function is a linear function?
natali 33 [55]

Answer:

B) y + 7 = 5x

Step-by-step explanation:

In math, a linear function is one that has a graph that is a line. It looks like this: There are two things that make up the equation: y = f(x) = a + bx. One independent variable and one dependent variable make up a linear function, which is also called a simple function. The independent variable is x, and the dependent variable is y, which is what you're interested in. Also, there are no exponents in a linear function, which means the exponent is one.

4 0
2 years ago
The elevation of a town is 24 feet above sea level. Which integer represents this temperature? −24 +24
Snowcat [4.5K]

Answer: +24 (last option)

Step-by-step explanation:

The level of reference is the sea level, then you can say that the sea level is at 0 feet.

The measures below the  sea level are negative and the  measures above the sea level are positive.

Therefore, if the elevation of a town is 24 feet above sea level, then the asnwer is: +24

6 0
3 years ago
Read 2 more answers
Which of the following values are in the range of the function graphed below?
Dafna1 [17]

Answer:

A. 1

Step-by-step explanation:

I see only one red function line in the graph. this line represents the simple function y = 1, for x in the interval [-2,1].

the domain of a function defines the possible values for x, and the range of a function defined the possible values for y.

this function has only one possible value for y : 1

so, only A applies.

5 0
3 years ago
Plug in the point to determine if it is on the circle<br> (x – 3)² + y2 = 4<br> (5,0)
Butoxors [25]

Answer:

yes

Step-by-step explanation:

(5_3)^2+2(0)=4

substitute with the 5 to x and 0 to y

8 0
3 years ago
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