If ◇ + ◇ + ◇ = 30
◇ + ○ + ○ = 20
○ + ▪▪ + ▪▪ = 13
what is ◇ + ○ + ▪ = ?

17

Step-by-step explanation:

Since the 3 kites give 30

It means that 1 kite is 10

1 kite +2 circles give 20

It has already been discovered that 1 kite is 10 it means that one circle is 5

1 circle+2(2squares) give 13

And I circle is 5 it means that 1 (2square) is 4

So back to the question

1kite+1 circle+1(1 square)

10+5+2

17

The reason why the square is 2 is because it is 1( 1square) and not 1(2squares)

I hope you understand

The final answer is 17

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm