There are 70 historical fiction books in the school library. Historical fiction books make up 1/10 of the library's collection. The equation 1/10b= 70 can be used to find out how many books in library's collection

all teachers

step-by-step explanation:

a - base

b - exponent

so,

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

it is x=-4

step-by-step explanation: