Find the value of x.
8.5, 9, 7.5, 6, 7, x; The mean is 8

Solution

Number of items(n)=6

mean=8

Sum of items=38+x

As we have,

mean= sum of items/number of items

or,8=38+x/6

or,48=38+x

or,x=48-38

Therefore, x=10

Step-by-step explanation:

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm