The difference between seven seven times a number and 8 8 is equal to four four times the sum of the number and 3 3. find the number. if x represents the number, which equation is correct for solving this problem?

20/3

7x - 8 = 4(x+ 3)

Step-by-step explanation:

Let the unknown number be x.

Now, the difference between 7 times a number and 8 is equal to four times the sum of the number and 3.

Writing this mathematically:

7x -8 = 4(x + 3)

To solve completely, we open the bracket:

7x - 8 = 4x + 12

7x - 4x = 12 + 8

3x = 20

x = 20/3

The correct equation to solving the problem is 7x - 8 = 4(x + 3)

b. an equilateral triangle inscribed in a circle

step-by-step explanation:

we are given the figure of two circles having a triangle inside.

now, we know that,

"when a figure is lying inside an another figure, then the outside figure is known as circumscribed figure and the figure lying inside is referred to as the inscribed figure".

as we see that, the circles are containing the triangle completely.

thus, the circles are the circumscribed figures and the triangle is the inscribed figure.

hence, we get, 'an equilateral triangle is inscribed in a circle'.