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STatiana [176]
3 years ago
11

Evaluate the expression 7^2/x^2-2 for x =3

Mathematics
1 answer:
Elan Coil [88]3 years ago
8 0

Answer:

7^2/x^2-2 for x =3

49/9-2

49/7

7

answer is 7

Step-by-step explanation:

You might be interested in
One number is 9 more than twice another. If their difference is 22, what is the larger number?
mafiozo [28]
Let, the numbers are: x, y
So, Equations will be: x - y = 22
x = 2y + 9

Substitute the value of x in first equation, 
2y + 9 - y = 22
y = 22 - 9
y = 13

x - 13 = 22
x = 22 + 13 = 35

In short, Larger number would be 35

Hope this helps!
4 0
3 years ago
Find the area of triangle GHJ
iogann1982 [59]

Answer:

The area of this triangle would be 24.

Step-by-step explanation:

In order to find this, we need to first determine what to use as the base of the triangle. Since when we draw it, the line between G and H is a flat line, it is the easiest to use as a base. Finding the length of the base is easy because we are simply looking for the difference in the x values.

6 - -2 = 8 = base

Now that we have the base, we need to find the height. The height is always the perpendicular line from the 3rd point to the base line. In this case, this would just be the change in y from the other two.

5 - -1 = 6 = height

Now that we have those two distances, we can just use the triangle formula.

A = 1/2bh

A = 1/2(8)(6)

A = 24

5 0
3 years ago
Circle A has a diameter of 9 cm Circle B has a radius of 5 cm which Circle has the largest circumference and about how many cent
Alexandra [31]

Answer:

circle b and it is bigger by 1 centimeter

Step-by-step explanation:

since circle b has a radius of 5 and radius is have of the diameter you have to do 5+5 to get the diameter when you do that you get 10 and then you have to subtract circle a diameter which is 9 from circle b diameter which is 10 so 10-9 is 1

4 0
3 years ago
Your carry on bag can weigh at most 40 ponds. Write and solve an inequality to represent how much more weight you can add to the
Alborosie

Answer:

82ibs - 40ibs = 22ibs

Step-by-step explanation:

5 0
3 years ago
Let f(r) = 6,<br> find f-¹(r)
I am Lyosha [343]

There is no answer because there cannot be one to one function inverse.

8 0
1 year ago
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