Answer:
Step-by-step explanation:
<u>Ratio of corresponding sides:</u>
- CD/BC = BC/AB
- CD/6 = 6/9.6
- CD = 6*6/9.6
- CD = 3.75 cm
Correct choice is C
Answer:
A .
length : 2x + 2 + x - 4 + x-2
= 2x + 2 + - 4 + x-2
= 2x + x - 4 + x - 2
= 4x -6
width : x - 2 + x
= 2x -2
B.
to find the perimeter
perimeter of rectangle = 2 ( l + b)
= 2 (4x -6 + 2x -2)
= 2 ( 6x - 8)
= 12x - 16
perimeter of Marlene's house in simplest form is 12x - 16
C.
perimeter = 142 finding the value of x ..
142 = 12x - 16
12x = 142 + 16
12x = 158
x = 158/12
x = 13.16
22.
area of living room = length × breadth
= 2x + 2 ×x
= 2 (13.16) + 2 × 13.16 (distributive property used)
= 26.32 + 2 × 13.16
= 28.32 × 13.16
= 372.6912
area of her living room = 372.6912
23. to find the length and width of Marlene's living room
length = 2x + 2
= 2 (13.16) + 2
= 26.32 + 2
= 28.32
Width = x
= 13.16
A .
The actual length of her living room is 28.32
The actual width of her living room is 13.16
B.
The actual area of Marlene's Living room is 372.6912 feet (given above) using actual dimensions
24.
Actual area of living room = length × breadth
= 2x + 2 ×x
= 2 (13.16) + 2 × 13.16 (distributive property used)
= 26.32 + 2 × 13.16
= 28.32 × 13.16
= 372.6912
Actual area of her living room = 372.6912
25.
Yes the answers to Question 23B and Qestions 24 are same .
We can conclude by saying that the x value doesn't change
Answer:
Step-by-step explanation:
Bike 12.7 percent, decreases
Scooter 24 percent, increase
Tennis racket, 82.95
Skis 452.40
Answer:
Best for choice for the first number to subtract = 500
Step-by-step explanation:
The dividend is 673 while the divisor is 25
First step is to subtract from the dividend an easy multiple like 100 times the divisor,20 times the divisor, 10 times the divisor, 5 times the divisor 2 times the divisor etc.
The best choice for the first number to subtract will be 20 times the divisor because when we multiply 20 by 25 and subtract from 673,we will get 173. And the next quotient will be 6 which is in units as the first one of 20 was in tens.
Best choice to subtract = 20 × 25 = 500
