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2 years ago

E3: Amab sells an article to Vivek at a profit of 15% and Vivek sells it to

Mathematics

1 answer:

Bogdan [553]2 years ago

3 0

Answer:

the cost price is 27,715

Step-by-step explanation:

Let the cost price be x

As Amab sells to Vivek at 15% profit

So the selling price be

= 115 ÷ 100 × x = 1.15x

And Vivek sells to sagar at a profit of 10%

= 1.15x × 110 ÷ 100

= 1.265x

Now sagar pays it for 35,060

So , the cost price be

1.265x = 35,060

x = 27,715

Hence, the cost price is 27,715

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True or false perpendicular lines have the same slope

stealth61 [152]

The Answer is False. It is false because on line has a slope of 0 and the other has an undefined slope.

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3 years ago

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Suppose player a scores the same number of runs for 8 seasons. Player b scores the same number of runs for 9 seasons. And player

diamong [38]

The answer is letter A. 8 times 128=1024. 9 times 113=1017.7 times 142=994

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3 years ago

How do you multiply and divide decimals ?

valina [46]

Multiplying Decimals

If you already know how to multiply, then multiplying decimals will be easy, there is just one extra step you need to take.
First, you multiply the numbers just like normal, as if the decimal point wasn't there.
Next, you need to add in the decimal point to the answer. This is the only tricky part. You add up the decimal places there are in the numbers you multiplied. Then you put that many decimal places in the answer.
Let's try some examples:

1) 4.22 x 3.1 = ?

If you first just multiply 422 x 31 you get

422
x 31
13082

Now, there are 2 decimal places in 4.22 and 1 decimal place in 3.1. This is a total of 3 decimal places. We then put three decimal places in 13082 and we finally get the answer:

13.082

1) 4.220 x 3.10 = ?

To show how the decimal part works, we'll solve the same problem again, but this time we will add a zero to the right of each number we multiply. This doesn't change the value of the numbers, so it shouldn't change the answer we get.

First we multiply without worrying about the decimals:

4220
x 310
1308200

Now, we count the total amount of decimals. There are 5 total decimals places this time. If we count over 5 decimal places from the end of 1308200 we get the same answer:

13.08200

Note: the extra zeros to the right of the decimal point do not change the value of the number.

Dividing Decimals

When you are dividing a number with a decimal point by a whole number, dividing decimals is pretty simple.
Divide the number as you normally would, using long division.
Bring the decimal point directly up from the dividend.
Example:

9.24 ÷ 7 = ?

If both divisor and dividend are decimals:

If the divisor is a decimal number rather than a whole number, then you need to take an extra step. In this step you convert the divisor from a decimal number to a whole number. You do this by moving the decimal point to the right in the divisor until there are no more numbers other than zero to the right of the decimal point. Then you move the decimal point to the right the same number of places in the dividend.

Example of moving the decimal point for division:

9.24 ÷ 7.008

You want the divisor 7.008 to be a whole number, so you need to move the decimal point 3 places to the right:

7008

Now you need to move the decimal point for the dividend 3 places to the right:

9240

In this case you have to add a zero to move it 3 places.

Now you divide 9240 by 7008 to get the answer:

Example:

0.64 ÷ 3.2 = ?

First move the decimal points so the divisor is a whole number:

6.4 ÷ 32 = ?

Important things to remember:
Move the decimal point directly up in your long division.
Always move the decimal points on BOTH to divisor and the dividend to where the divisor is a whole number.

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3 years ago

2) The number of streetlights in a town is growing linearly. Four months ago (n = 0) there were 130 lights. Now (n = 4) there ar

IRINA_888 [86]

Answer:

Step-by-step explanation:

Since the number of streetlights in a town is growing linearly, the street lights are increasing in arithmetic progression.

The formula for determining the nth term of an arithmetic sequence is expressed as

Tn = a + (n - 1)d

Where

a represents the first term of the sequence.

d represents the common difference.

n represents the number of terms in the sequence.

For n = 0, T0 = 130, therefore,

130 = a + (0 - 1)d

130 = a - d - - - - - - - - - -1

For n = 4, T4 = 154, therefore,

154 = a + (4 - 1)

154 = a + 3d - - - - - - - - - -2

Subtracting equation 2 from equation 1, it becomes

- 24 = - 4d

d = - 24/- 4 = 6

Substituting d = 6 into equation 1, it becomes

130 = a - 6

a = 130 + 6 = 136

a) The explicit formula for the number of lights in n months is

Tn = 136 + 6(n - 1)

b) The number of months that it will take to reach 200 lights is

200 = 136 + 6(n - 1)

200 - 136 = 6(n - 1)

64 = 6(n - 1)

6n - 6 = 64

6n = 64 + 6 = 70

n = 70/6 = 11.66

Approximately 12 months

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3 years ago

ABCD is a quadrilateral.

klasskru [66]

Answer:

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B 102

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2 years ago