Consider the expression 7x2 - 4 - 9x. What is the coefficient of x?
1 answer:
Answer:
<em>Answer of 1 is c , 2 is c , 4 is d and 5 is d</em>
Step-by-step explanation:
1.The expression is 7 -4 -9x
We need to find the coefficient of x
The coefficient of x is -9
<em> The answer is option c</em>
2.The order pair which would not appear as a solution for the linear
equation y = -x + 3
By analyzing by putting values of x and y
<em> The answer is option c</em>
4. Caroline chose A as her answer and we need to find which ordered pair
would Not appear as a solution for the linear equation y = -4x -2
<em>The right answer is d </em> as it's not the correct method
5. By analyzing the equation we get
31 < k + 15
As it is clearly written that we need "31 less than k and 15"
<em> The answer is option d</em>
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Answer: After 7 years the number of birds of species A and B are same. and the number of birds during that year will be 140.
Step-by-step explanation:
Given: Sharon is conducting research on two species of birds at a bird sanctuary.
The number of birds of species A is represented by the equation below,where S represents the number of birds, x years after beginning her research.
The number of birds of species B is represented by the equation below,where S represents the number of birds, x years after beginning her research.
To plot the above function, first find points by which they are passing.
For species A, At x=0 ,
At x=2 ,
Similarly find more points and plot curve on graph.
For species A, At x=0 ,
At x=2 ,
Plot a line with the help of these two points.
Now, from the graph the intersection of curve (for A) and line (for B) is at (7,140) which tells that After 7 years the number of birds of species A and B are same. and the number of birds during that year will be 140.
