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3 years ago

Explain what can happen if you line up the digits incorrectly when you rewrite addition problems

1 answer:

6 0

You will get the incorrect answer because lining up the digits when adding or subtracting is important but it isn’t needed for multiplying.

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The radius of a circle is 4 feet. What is the area of a sector bounded by a 45° arc?

DIA [1.3K]

Answer:

$Area = 6.28\ ft^2$ or $Area = 2 \pi\ ft^2$

Step-by-step explanation:

Given

$Radius, r = 4ft$

$Angle, \theta = 45$

Required

Calculate the area of the sector

When angle is given in degrees, the area of sector is calculated as thus;

$Area = \frac{\theta}{360} * \pi * r^2$

$Substitute\ r = 4\ and\ \theta = 45$

$Area = \frac{\theta}{360} * \pi * r^2$ becomes

$Area = \frac{45}{360} * \pi * 4^2$

$Area = \frac{45}{360} * \pi * 16$

$Area = \frac{45*16}{360} * \pi$

$Area = \frac{720}{360} * \pi$

$Area = 2 * \pi$

$Area = 2 \pi\ ft^2$

The above is the area in terms of π

Solving further.... (Take π as 3.14)

$Area = 2 \pi\ ft^2$ becomes

$Area = 2 * 3.14\ ft^2$

$Area = 6.28\ ft^2$

Hence, the area of the sector is

$Area = 6.28\ ft^2$ or $Area = 2 \pi\ ft^2$

8 0

4 years ago

How do you find slope given the graph of a line on grid

VLD [36.1K]

Take two points on the graph and do y2-y1/x2-x1 you would find your slope doing that.

4 0

3 years ago

Amit solved the equation StartFraction 5 over 12 EndFraction = Negative StartFraction x over 420 EndFraction for x using the ste

melomori [17]

Answer:

-AKA-

The product of StartFraction 5 over 12 EndFraction and –420 should have been the value of x.

-AKA-

The product of 5/12 and –420 should have been the value of x.

Step-by-step explanation:

i did it on edge 2020

see..........

hope it helps :)

7 0

4 years ago

Read 2 more answers

A drawer has a volume of 1,575 cubic inches. The drawer is 5 inches deep and 21 inches long. What is the width of the drawer?

lubasha [3.4K]

The width would be 15 in. You divide 1,575 by 5 and by 21 to get 15.

7 0

3 years ago

Read 2 more answers

On a weekend class gathering at a museum, a teacher brings $50 to pay for museum

dmitriy555 [2]

The equation used to find the cost of student ticket is:

$13x + 3.50 + 3x + 18.50 = 50$

Solution:

Given that,

A teacher brings $50 to pay for museum admission

She buys an adult ticket for $3.50 and 13 student tickets

Cost of adult ticket = $ 3.50

Let "x" be the cost of each student ticket

Three students arrive late so she buys 3 more student tickets

She has $18.50 left

The equation used to find the cost of student ticket is:

Cost of adult ticket + 13 student tickets x cost of each student ticket + 3 student ticket x cost of each student ticket = 50 - 18.50

$3.50 + 13x + 3x = 50-18.50\\\\13x + 3.50 + 3x + 18.50 = 50$

Thus the above equation is used

4 0

3 years ago