Which of the following quadrilaterals have diagonals that bisect each other?

a. parallelogram
b. rectangle
c. square
d. rhombus

A. Parallelogram

B. Rectangle

C. Square

D. Rhombus, all are correct

Step-by-step explanation:

We know that a parallelogram is a quadrilateral in which diagonals bisect each other.

Hence, all the given quadrilaterals have diagonals that bisect each other.

3x + 18 = 147°

step-by-step explanation:

3x + 18 = 147°, because the value of the central angle is equal to the value of the arc formed by it.

i hope i you.

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950