In the number 33,762, the 3 is in the thousands place, so we look to the number behind it. If it is less than 5, we round down, and if it is more than 5 we round up.

Since 7 is more than 5, we round up, so our rounded number would be

34,000

Let’s use this logic for the rest of these numbers

179,406

4 is in the hundreds

Previous number in 0 which is less than 5, so it rounds down

179,400

39,994

9 is in the tens place

Previous number is 4 which is less than 5, so it rounds down

39,990

8 0

3 years ago

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A rectangle field has an area of 1764 m^2. The width of the field is 13m more than the length. What is the perimeter of the fiel

mr_godi [17]

Answer:

Step-by-step explanation:

hello :

let y the length and x the width

A the area and P the perimeter

so : A= xy and P = 2(x+y) ....y > x and x >0 ; y>0

xy = 1764 ...(1)

y = x +13....(2) put this value in (1) : x (x+13) = 1764

x²+13x -1764 = 0 ...quadratic equation

calculate : Δ = b² -4ac a =1 and b =13 and

c = -1764

Δ = (13)² - 4(1)(-1764) = 169 +7056 = 7225=85²

X1 =(-b-√Δ)/2a =(-13-85)/2 < 0 refused (x >0)

X2 =(-b+√Δ)/2a =(-13+85)/2 = 72/2 = 36

so : x= 36 put this value in (2) : y = 36+13 = 49

the perimeter is : P = 2(x+y)

P = 2(36+49) = 170 m

6 0

3 years ago