1 Here are two right-angled triangles.

y cm
6 cm
X
X
10 cm
15 cm
Circle the value of y.

y = 9 cm

Step-by-step explanation:

The 2 triangles are similar ( by AA postulate ) , then the ratios of corresponding sides are in proportion , that is

= = 1.5 ( multiply both sides by 6 )

y = 6 × 1.5 = 9 cm

let the first ∆ be ∆ABC and the second triangle be ∆XYZ

In ∆ABC and ∆XYZ ,

90° = 90°

∠X = ∠X

therefore , by AA property of similarity

∆ABC ≈ ∆XYZ

Now ,

the sides of similar triangles are in proportion ! therefore ,

hope helpful~

b i think

step-by-step explanation:

not really sure

(1, –1), (16, –4), (36, –6)

step-by-step explanation:

given that the function is

this can also be written as

we have to graph this function and check which list of points lie on the graph

see attachment for graph:

we find that the points lying are (1,-1) (16,-4) and (36,-6)

since square root is there we find that x can only be posiitve but y can be since square root both positive and negative.