What is 21000 rounded to the nearest ten thousand

Answers

Answer 1

Answer: A number rounded to the nearest 10000, means that the last four digits of that number (on the left of the decimal point) are 0.
However, if the fourth-last digit to the left of the decimal point is 5 or greater, the number to the left of that is rounded to 1 number higher. For example, if you were rounding 145293 to the nearest 10000, it would be 150000.

However, the fourth-last digit to the left of the decimal point in this case is 1.
Therefore, 21000 rounded to the nearest 10000 is 20000.

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A CD usually sells for $13.00. If the CD is 20% off, and sales tax is 6%, what is the total price of the CD, including tax?A.$10.34
B.$11.02
C.$11.13
D.$11.18

Answers

If it is 20% off, we multiply the decimal form of 20%(0.2) to 13. 0.2 x 13 equals 2.6, and we subtract 13 by this to get 10.4. 10.4 is the price of the CD after the 20% off, so now we need to figure out the price after tax. Since tax is 6%, we can multiply the decimal form of it(0.06) to the discounted price. 10.4 x 0.06 equals 0.624, and 10.4 + 0.624 equals 11.024. So the total price of the CD including the discount and tax is $11.024.

:)

First, find 20% of 13:

$\sf0.20*13=2.6$

Subtract this from the price:

$\sf13-2.6=10.4$

Now find 6% of this:

$\sf0.06*10.4=0.624$

Now add this to the discounted price:

$\sf10.4+0.624=11.024$

So the price is approximately $11.02

Helppp with number 10

Answers

I think number 10 is (A) and (D). Hope I helped!

What is the length of the diagonal for the given rectangular prism to the nearest whole unit?the unit is the length=6, width=5, height=9

A. 8 cm
B.10 cm
C.11 cm
D.12 cm

1.what is the slant height for the given pyramid to the nearest whole unit.

pyramid base= 12 cm
height=8 cm
A.5 cm
B.9 cm
C.14 cm
D.10 cm

Answers

length of the diagonal : D. 12 cm

The space diagonal of a rectangular prism is derived using the following formula:

d = √(l² + w² + h²)

l = 6; w = 5; h = 9
d = √6² + 5² + 9²
d = √36 + 25 + 81
d = √142
d = 11.916 ⇒ 12 cm

slant height of the given pyramid :

l = slant height
h = height
a = base radius

l = √h² + a²

i'm assuming that the pyramid base is also the base radius
l = √8² + 12²
l = √64 + 144
l = √208
I = 14.42 ⇒ 14cm

in the event that the pyramid base is not the radius, then 12/2; 6cm
l = √8² + 6²
l = √64 + 36
l = √100
l = 10 cm

A computer has increase by 8% to $351. work out the original price