Mary’s grade on her research paper counts for 20% of her final grade in english. if there are a total of 400 points possible how many points can she earn for her research paper

80 points

Step-by-step explanation:

Total percentage is always 100%

Total points is 400

The research paper has a weight of 20% of the total (which is 400 points).

The highest possible points is 20% of 400

First, we need to convert percentage to decimal by dividing by 100. Then we will multiply that decimal with 400. Shown below:

20% = 20/100 = 0.2

Now,

0.2 * 400 = 80 points

So, she can earn 80 points for her research paper

80 points

Step-by-step explanation:

400 x 0.20% = 80

80 points

Step-by-step explanation:

There is a total of 400 possible points so you are going to want to find 20% of  that 400 points. To find that 20% you have to multiply 20×400=8000 THEN you want to divide that by 100 ( because that is the total possible percent and you get 80.

bull

step-by-step explanation:

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it