Aschool assembly had 30 students in attendance, and 20% of them were first-graders. how
many first-graders were at the assembly?

6

Step-by-step explanation:

If a school assembly had 30 students in attendance, and 20% of them were first-graders, there were 6 first-graders at the assembly.

20% of 30 = 6

$20.01

step-by-step explanation:

the sale price is (1.00 - 0.77)($87), or 0.23($87), or $20.01.

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 .