I need help with question 20

Step-by-step explanation:

∠1 + ∠2 = 180° (angles on a straight line are supplementary)

x^2 + 3y + 20y + 3 = 180

x^2 + 23y = 177 --(1)

∠1 = ∠3 (vertically opposite angles)

x^2 + 3y = 3y + 4x

x^2 - 4x = 0

x(x - 4) = 0

x = 0 or x = 4

Sub x = 0 and x = 4 into (1):

0^2 + 23y = 177

y = 7.696 (3d.p.)

4^2 + 23y = 177

23y = 161

y = 7

therefore, x = 0 and y = 7.696 or x = 4 and y = 7

This is a question on simultaneous equations + angles. If you wish to venture further into it/understand this topic better, you may want to follow my Instagram account (learntionary), where I post some of my own notes on certain topics and also some tips that may be useful to you :)

number one is the correct answer

step-by-step explanation: dogs and cats are mentioned, no other animals

"image"

step-by-step explanation:

in most of these problems, the notation is that the point with a "prime" is the image of the point without. that is, b' is the image of b.

here, there is no dilation or reflection. there is simply translation (with no direction shown). which figure you call the "preimage" and which one you call the "image" is up to you. as a matter of convention, the naming is as described above.