2 years ago

Estimate the difference by rounding each number to the nearest half or whole. 7 1/15 - 3 4/5

Mathematics

1 answer:

bearhunter [10]2 years ago

3 0

7 1/15 to the nearest whole would be 7. 3 4/5 to the nearest whole would be 4.

7 – 4 = 3

You might be interested in

Apply the distributive property to write an equivalent expression <br>4(2+w)

Alja [10]

Hi 4w+8 is the answer

8 0

3 years ago

Jane sells 8 times as many Volvos as Melissa. If the difference in their sales is 35, how many cars did Jane sell?

Usimov [2.4K]

Here we have 2 variables we need to calculate:
x - how many Volvos Jane sold
y - how many Volvos Melissa sold

We write system of equations:
x = 8*y
x - y = 35
------------
8y - y = 35
7y = 35
y = 5
x = 8*5 = 40

Jane sold 40 cars.

8 0

2 years ago

The diagram shows a sector of a circle radius 10cm

Yuki888 [10]

Answer:

$\text{Perimeter of sector = 43.6 (Rounded to the nearest tenth.)}$

Step-by-step explanation:

$\text{Perimeter of the sector = Radius + arc length + radius}$

$\text{Radius = 10 cm}$

$\text{Perimeter of the sector = 10 + arc length + 10 }$

$\text{Perimeter of the sector = 20 + arc length }$

$\text{arc length = (sector angle/ 360 ) * perimeter of the circle}$

$\text{Perimeter of a circle }=2\pi r$

$\text{sector angle} = 135$

$\text{arc length} = (135/ 360 ) * 2\pi (10)$

$= (3/8) 20\pi$

$= 15\pi /2$

$\text{Using }\pi =3.14$

$= 15 * 3.14 /2$

$= 23.55$

$\text{Perimeter of the sector = 20 + 23.55}$

$= 43.55$

$= 43.6 cm$

$\text{perimeter of the sector = 43.6 cm }$

8 0

2 years ago

Chan rows at a rate of 8 mph in still water. It takes him three hours to row upstream from his house to the park. He rows back h

Degger [83]

Well in my calculations I got: well if you he increases the speed by 2.6 per hour soo 4+2.6=6.6

3 0

2 years ago

Represent the following expressions as a power of the number (a≠0):

Vsevolod [243]

The answer should be a^7

3 0

3 years ago