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Zarrin [17]
3 years ago
15

Complete the following statement. 90% of $20 =

Mathematics
2 answers:
vodka [1.7K]3 years ago
5 0

Answer:

$18

Step-by-step explanation:

100% of 20  is 20

use the fact that 2*10 =20 so for every $2 you have anothher 10%

90% of 20 is

100%-10% of 20-2 = $18

dlinn [17]3 years ago
3 0
18 dollars would be the answer
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If the square root of p2 is an integer greater than 1, which of the following must be true? I. p2 has an odd number of positive
Grace [21]

Answer:

Option | and Option || is True

Step-by-step explanation:

Given:

If the square root of p^{2} is an integer greater than 1,

Lets p = 2, 3, 4, 5, 6, 7..........

Solution:

Now we check all option for p^{2}

Option |.

p^{2} has an odd number of positive factors.

Let p=2

The positive factor of 2^{2}=4=1,2,4

Number of factor is 3

Let p=3

The positive factor of 3^{2}=9=1,3,9

Number of factor is 3

So, p^{2} has an odd number of positive factors.

Therefore, 1st option is true.

Option ||.

p^{2} can be expressed as the product of an even number of positive prime factors

Let p=2

The positive factor of 2^{2}=4=1,2,4

4=2\times 2

Let p=3

The positive factor of 3^{2}=9=1,3,9

9=3\times 3

So, it is expressed as the product of an even number of positive prime factors,

Therefore, 2nd option is true.

Option |||.

p has an even number of positive factors

Let p=2

Positive factor of 2=1,2

Number of factor is 2.

Let p=4

Positive factor of 4=1,2,4

Number of factor is 3 that is odd

So, p has also odd number of positive factor.

Therefore, it is false.

Therefore, Option | and Option || is True.

Option ||| is false.

4 0
3 years ago
A restaurant customer left ​$1.65 as a tip. The tax was 4 % and the tip was 15​% of the after tax cost. Which information is not
Fed [463]
You dont need the percentage of tip. to calculate the bill, divide 100 by 15, then multiply that number by 1.65, you will get the total of the bill afer tax. if you add 1.65 to the total you get the total after tax and tip
8 0
3 years ago
What is the answer to linear equation: 5 = 6 - 7c
nadya68 [22]

Answer:

c = 1/7

Step-by-step explanation:

Here we have to solve the linear equation.

We need to find the value of c.

5 = 6 - 7c

Isolate the variable and constants

Add 7c on both sides, we get

7c + 5 = 6 - 7c + 7c

7c + 5 = 6

Subtract 5 from both sides, we get

7c + 5 - 5 = 6 - 5

7c = 1

Dividing both sides by 7, we get

c = 1/7

Thank you.

8 0
4 years ago
Hereeeeeee helllllllpp lol
Ivenika [448]
It should be 0 because the only factor changing is the x value
7 0
3 years ago
What is the least common multiple (LCM) of 8 and 14?
DENIUS [597]

Answer:

56

Step-by-step explanation:

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6 0
3 years ago
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