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4 years ago

THE SEVEN APPLEWOMEN

Mathematics

2 answers:

Sliva [168]4 years ago

7 0

Answer:

zero

Step-by-step explanation:

If the same sum is received for the sale of 20 apples at price p as is received for the sale of 140 apples at price p, then we must have ...

20p = 140p

120p = 0 . . . . . . subtract 20p

p = 0 . . . . . . . . . divide by 120

The price was zero.

Assoli18 [71]4 years ago

7 0

Answer:

Price was 1 unit of money per each 7 apples and 3 units of money per each extra apple
Each woman received 20 unit of money

Step-by-step explanation:

This is the tricky one

I think 'The Seven Apple' is the hint. Let's see what the numbers have to do with 7:

20 = 7*2 + 6
40 = 7*5 + 5
60 = 7*8 + 4
80 = 7*11 + 3
100 = 7*14 + 2
120 = 7*17 + 1
140 = 7*20 + 0

Assume each '7 apples' sold for a fixed price x and each 'extra' apple sold for a different price y. Since all add up to make same amount, we get:

2x + 6y = 5x + 5y = ... = 20x

Let x = 1, then we get y = 3

So we get the sold price:

20 apples cost: 2*1 + 6*3 = 20
40 apples cost: 5*1 + 5*3 = 20
...
140 apples cost: 20*1 = 20

So each apple woman got 20 units of money for their apples.

Price was 1 unit of money per each 7 and 3 units of money per each extra apple

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Perform the following calculations. In each case, first estimate the solution without using a calculator and then do the calcula

kakasveta [241]

Answer:

For a: The answer is $2.3\times 10^1$

For b: The answer is $8.0\times 10^{-6}$

For c: The answer is 127.6

For d: The answer is $4.66\times 10^4$

Step-by-step explanation:

Significant figures are defined as the figures in a number which express the value -the magnitude of a quantity to a specific degree of accuracy is known as significant digits.

Rules for significant figures:

Digits from 1 to 9 are always significant and have infinite number of significant figures.
All non-zero numbers are always significant. For example: 654, 6.54 and 65.4 all have three significant figures.
All zero’s between integers are always significant. For example: 5005, 5.005 and 50.05 all have four significant figures.
All zero’s preceding the first integers are never significant. For example: 0.0078 has two significant figures.
All zero’s after the decimal point are always significant. For example: 4.500, 45.00 and 450.0 all have four significant figures.
All zeroes used solely for spacing the decimal point are not significant. For example : 8000 has one significant figure.

Rule applied for the addition and subtraction is:

The least precise number present after the decimal point determines the number of significant figures in the answer.

Rule applied for the multiplication and division is:

The number of significant digits is taken from the value which has least precise significant digits.

For the given options:

Option a: (2.7)(8.632)

The given problem is a multiplication one.

$\Rightarrow (2.7\times 8.632)=23.3$

Here, the least precise significant digits are 2. So, the answer is $2.3\times 10^1$

Option b: (3.600 x 10^-4) / 45

The given problem is a division one.

$\Rightarrow \frac{(3.600\times 10^{-4})}{45}=0.08\times 10^{-4}$

Here, the least precise significant digits are 2. So, the answer is $8.0\times 10^{-6}$

Option c: 2.365 + 125.2

The given problem is an addition one.

$\Rightarrow (2.365+125.2)=127.565$

Here, the least precise significant digits after decimal is 1. So, the answer is 127.6

Option d: (4.753 x 10^4) - (9 x 10^2)

The given problem is a subtraction one.

$\Rightarrow (4.753\times 10^4)-(9\times 10^2)=(4.753\times 10^4)-(0.09\times 10^4)=4.663\times 10^4$

Here, the least precise significant digits after decimal are 2. So, the answer is $4.66\times 10^4$

3 0

4 years ago

I don't know how to do this can you plz help?

Vanyuwa [196]

sin45=5/x so x is 5/(sin45)

y is 5/(tan45)

question 5 then you just go x= (9sqrt(2)/2)/sin45

i don’t have a calculator rn so just plug it into it

7 0

4 years ago

Read 2 more answers

PLS HELP ILL GIVE BRAINLIEST!

kodGreya [7K]

Hi there.

The answer is g(0) = 3.

Explanation:

Given three functions with specified domains. The first and three functions both do not have x = 0 as a part of the domain. We can clear both functions.

Our main function then is currently —

$g(x) = 3$

You might be wondering how are we gonna find the x-value if there is no x-term?

That is to do nothing. If there is no x-term to substitute then we answer only the constant.

$g(0) = 3$

4 0

3 years ago

What type of quadrilateral is created by the points: L (-5,4), M (2,2), N (0,-3), S (-7,-1)

kumpel [21]

Given same lengths and slopes of the opposite sides and nature of the angle between adjacent sides, we have;

The type of quadrilateral is a parallelogram

<h3>How can the type of quadrilateral be found?</h3>

The given points are;

L(-5, 4), M(2, 2), N(0, -3), S(-7, -1)

Lengths of the sides are;

Length of LM = √((2-(-5))²+(2-4)²) ≈ √(53)

Length of MN = √((2-0)²+(2-(-3))²) ≈ √(29)

Length of NS = √((0-(-7))²+((-3)-(-1))²) ≈ √(53)

Length of LS = √(((-7)-(-5))²+((-1)-4)²) ≈ √(29)

Therefore;

The lengths of opposite sides are the same.

Slope of LM = (2-4)/(2-(-5)) = -2/7

Slope of MN = (2-(-3))/(0-2) = 5/2

Slope of NS = ((-3)-(-1))/(0-(-7)) = -2/7

Slope of LS = ((-1)-4)/(-7-(-5)) = 5/2

Therefore;

The opposite sides are parallel, and

The the adjacent sides are not perpendicular

The quadrilateral created by the points L(-5, 4), M(2, 2), N(0, -3), S(-7, -1) is therefore;

A parallelogram

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2 years ago

How many quarts of pure antifreeze must be added to 2 quarts of a 20% antifreeze solution to obtain a 60% antifreeze solution?

blsea [12.9K]

The quantity of pure antifreeze that must be added to 2 quarts of a 20% antifreeze solution to obtain a 60% antifreeze solution 2 quarts

How to solve equation?

x = quarts of 100% antifreeze

You have 2 quarts of 20% antifreeze.

(100%)x + (20%)2 = 60%(x + 2)

100x + 40 = 60(x + 2)

100x + 40 = 60x + 120

100x - 60x = 120 - 40

40x = 80

x = 80/40

x = 2 quarts

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4 0

2 years ago