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inysia [295]
3 years ago
5

Write an expression that represents the sum of 7 and x. Please help :)Thanks!

Mathematics
1 answer:
eduard3 years ago
8 0

Answer:

the sum of 7 is 7

Step-by-step explanation:

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40.51x+12.45y=666.64
irga5000 [103]

Answer:

The graph of the equation 40.51x+12.45y=666.64 is attached with the answer where the horizontal axis represents the X axis and the vertical axis represents Y axis.

To plot the graph physically just find two points lying on the line. Mark the points on the graph sheet and then join them. This will give you the line represented by the equation.

To find points on the line assume the value of any one variable, substitute it in the equation, then solve the equation to find the value of other variable. For example : assume y = 1; substitute the value of y in the equation;

⇒ 40.51x + 12.45×1 = 666.64

⇒ 40.51x = 666.64 - 12.45

⇒ 40.51x = 654.19

⇒ x = \frac{654.19}{40.51}

⇒ x ≈ 16.149

Therefore point ( 16.149 , 1 ) lie on the graph of the equation.

***Only two points are required to plot this graph just because it represents a straight line, that we can conclude just by observing the equation. If in an equation the power of x is 1 or 0 and power of y is 1 or 0 then only it will represent a straight line in 2-D plane.***

5 0
3 years ago
What is the answer to thiss
lana [24]

Hi Student!

This question is fairly simple because it gives us an equation and they also give us a value for the variable that is within the equation and they tell us evaluate the expression.  So let's plug in the values and solve.

<u>Plug in the values</u>

  • m^2 + 5
  • (9)^2 + 5

<u>Factor out the exponent</u>

  • (9*9) + 5
  • 81 + 5

<u>Combine</u>

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Therefore, the final answer that we would get when substituting m with 9 in the given equation is that we get 86.

5 0
2 years ago
Which relation is a function?<br> Question 3 options:
EleoNora [17]

Answer:

A function is a relation in which each input has only one output. In the relation , y is a function of x, because for each input x (1, 2, 3, or 0), there is only one output y. x is not a function of y, because the input y = 3 has multiple outputs: x = 1 and x = 2.

I hope it's helpful!

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3 years ago
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I am Lyosha [343]

Answer:

the last one

Step-by-step explanation:

uv

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3 years ago
4i+4-2i+10<br> whats the answer to this equation 0_0
N76 [4]

Answer:

2i + 14

Step-by-step explanation:

4i + 4 - 2i + 10

combine like terms

2i + 14

3 0
3 years ago
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