Answer:
4.5
Step-by-step explanation:
Ratio :
Width : Length
3 : 5
Let the factor be x
(3x)(5x) = 15x²
15x² = 135
x² = 9
x = √9
x = 3
Width = 3 x 3 = 9 cm
Length = 3 x5 = 15 cm
Answer: The dimension is 9cm by 15 cm
Answer:
B) (x,y) -> (-x,y)
Step-by-step explanation:
By reflecting across the y axis, all y values stay the same, therefore no matter what happens to the x, the second half will be y -> y
Because of the reflection across the y axis, you are simply taking all x values and multiplying by -1 to get x -> -x.
Thus, (x,y) -> (-x,y)
Answer:
15,000cm^2
Step-by-step explanation:
Given data
Dimension of a card
Length= 15cm
Widht= 10cm
Area= 15*10= 150cm^2
Now if 1 card covers area of 150cm^2
the 100 cards will cover x
cross multiply
x= 150*100
x= 15,000cm^2
Hence the total area covered is 15,000cm^2