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MrRa [10]
3 years ago
7

The dinner check for a birthday party was $89.50. Estimate a 15% tip.

Mathematics
2 answers:
coldgirl [10]3 years ago
4 0

Answer:

i got you bro

Step-by-step explanation:

It is very easy to estimate 10% of any number - just divide by 10 by moving the decimal point one place to the left.

Once you know 10% of an amount, it is possible to find 5% by dividing the value that is 10% by 2. Adding these answers gives a quick estimate of 15%

For example: "Find 15% of 300"

10% of 300 = 30 and 30÷2=15

15% of 300 = 30+15 =45

In the same way for this question ...

Treat 89.50 as $90 Find 10%, then 5%.

#10% +5% = 9+13.50#

15% of the bill is about $13.50

maria [59]3 years ago
3 0
About $13 dollars rounded to the nearest whole dollar and $13.40 rounded to the nearest tenth.
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Step-by-step explanation:

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3 years ago
The area of a rectangle is 144cm squared.if the length is 16cm. What's the perimeter?​
andreev551 [17]

Answer:

50

Step-by-step explanation:

rectangle area = 144 cm

Formula: A= L*H

The give the length which is 16

144 = 16*H

Since they gave u the area instead of the height, work backwards

144/16 = 16/16 *H

9 = H

Now you have the length and height

Length: 16

Height: 9

Perimeter is when you add up all the sides

The top and bottom of the rectangle is the length which is 16 so

16 + 16 = 32

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9 + 9 = 18

Now add then both

32 + 18 = 50

So the perimeter of the rectangle is 50

Hope this helped!

4 0
3 years ago
Find a radius of a circle the length of which is 24π cm.
Juli2301 [7.4K]

Answer:

12

Step-by-step explanation:

Length of a circle = circumference = 2πr = 24π

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3 0
2 years ago
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