I think it would be $14 per book
Answer:
The correct option is B.
Step-by-step explanation:
It is given that triangle A"B"C" is the image of triangle ABC after transformation.
From the given figure it is noticed that the point C lies on positive y-axis and point C" lies on negative x-axis.
It means the figure is rotated either counterclockwise 90° or clockwise 270°. The rotation rule is

The corresponding sides of image A"B"C" are smaller than the preimage ABC.

Since k<0, therefore the transformation shows the reduction. The dilation rule is




Option B is correct.
Answer:
5
Step-by-step explanation:
→ Let x = √20 + √20 .....
x
→ Square both sides
x² = 20 + √20 +√20 + √20
→ Replace √20 +√20 + √20 with x
x² = 20 + x
→ Move everything to the left hand side
x² - 20 - x = 0
→ Factorise
( x + 4 ) ( x - 5 )
→ Solve
x = -4 , 5
→ Discard negative result
x = 5
Answer:
Step-by-step explanation:
S 50 m = 0.050 km
A ∵ 1 m = 100 cm
∴ 5 m = 500 cm
K ∵ 1000 dm = 0.1 km
∴ 1 dm =
km
∴ 5246 dm =
km
= 0.5246 km
P ∵ 1 m = 1000 mm
∴ 5.246 m = 5246 mm
P ∵ 1 hg = 1000 dg
∴ 3.7 hg = 3700 dg
U ∵ 1 g = 100 cg
∴ 0.37 g = 37 cg
E ∵ 1 kg = 1000 g
∴ 370 kg = 370,000 g
Answer:
Step-by-step explanation:
a) Complete the table
Monday Tuesday Wednesday Total
Female 21-14=7 38-13-7= 18 13 38
Male 14 33-18= 15 26-13 =13 80-38=42
Total 80-33-26= 21 33 26 80
b) P(the student is a female) = 38/80= 0.475
c) P(the student visited the library on Tuesday) = 33/80= 0.4125