I don’t know but I have to helpAwnser : 456.7
2.109
2.6
2.1062
2.16
Look at the tenths place first. All of the numbers have 1 besides 2.6 in the tenths place, so we know that 2.6 will go last because it is the greatest.
Now look at the hundredths place. 2.109 and 2.1062 both have 0 while 2.16 has 6 in the hundredths place, so 2.16 will go third to last.
Now look at the thousandths place. 2.1062 has 6 while 2.109 has 9, and 6 is less than 9. That means 2.1062 is less than 2.109 so 2.1062 will be first and 2.109 will be second.
The answer is 2.1062, 2.109, 2.16, 2.6.
a) The equations to determine the length and the width of the rug are
l = 4 + w and l × w = 21
b) The enlarged rug's area = 60 square feet
Step-by-step explanation:
Step 1 :
Let l be the length and w represent the width of the rectangular rug
Given the area = 21 square feet.
So l × w = 21
Also given, the length is 4 feet longer than the width .
So we have
l = 4 + w
Step 2 :
Using the above 2 equations we have
(4+w)w = 21
w² + 4 w - 21 = 0
(w+7)(w-3) = 0
=> w = -7 or w = 3
Since w is the width of the rug, we take the positive value w = 3 as the width
So w = 3 feet
So
l = 4 + w = 4 +3 = 7 feet
Step 3 :
When a 1.5 foot border is added all the way round the rug, the length and width are increased by 3 feet (1.5 feet on both sides) the rug's enlarged length and the rug's enlarged width is
l = 7 + 3 = 10
w = 3 + 3 = 6
The enlarged rug's area = 10 × 6 = 60 square feet
Step 4 :
Answer :
The equations to determine the length and the width of the rug are
l = 4 + w and l × w = 21
The enlarged rug's area = 60 square feet
Answer:
3
Step-by-step explanation:
area of square=l*b so
81=3x multiply 3x
81=9x^2
81/9=x^2
9=x^2
=x
3=x
