You scored 88, 92, and 87 on three tests. write and solve an equation to find the score you need on the fourth test so that your mean test score is 90.

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Set up the equation to find the average (mean) of four test scores:

88+92+87 + x

          4

We set this equal to the desired average (90) and solve for x.

88+92+87 + x

= 90, or 88+92+87+x = 360.  Next, 267 + x = 360.

          4

Subtracting 267 from both sides, we get x = 93.

Earning a 93 on the last test will result in an overall test score of 90.

it could be 1,3 and more others to create a cylinder.

step-by-step explanation:

the length of o'p' is .

step-by-step explanation:

it is given that the quadrilateral m'n'o'p' is the image of quadrilateral mnop after dilation.

the center of dilation is origin and the scale factor is 1.5.

in dilation the image and preimge are similar figures. it means the sides of image and preimage are proportional.

the scale factor is defined as

the scale factor is 1.5.

multiply both sides by op.

note: if the value of op is given, then multiply the value of op with 1.5 to get the length of side o'p'.

therefore length of o'p' is .