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likoan [24]
2 years ago
6

Hailey paid 13$ for 1 3/7 kg sliced salimi what is the price per kilogram of salimi

Mathematics
1 answer:
Volgvan2 years ago
3 0

Answer:

13/(1 3/7)*1 = $9.10

Step-by-step explanation:

Simplify the following:

13/(1 + 3/7)

Hint: | Put the fractions in 1 + 3/7 over a common denominator.

Put 1 + 3/7 over the common denominator 7. 1 + 3/7 = 7/7 + 3/7:

13/(7/7 + 3/7)

Hint: | Add the fractions over a common denominator to a single fraction.

7/7 + 3/7 = (7 + 3)/7:

13/((7 + 3)/7)

Hint: | Evaluate 7 + 3.

7 + 3 = 10:

13/(10/7)

Hint: | Write 13/(10/7) as a single fraction.

Multiply the numerator of 13/(10/7) by the reciprocal of the denominator. 13/(10/7) = (13×7)/10:

(13×7)/10

Hint: | Multiply 13 and 7 together.

13×7 = 91:

Answer:  91/10 or 9.10 decimal

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Look at the picture.

We have the equation (1) 12x + 4y = 40.

We know, the sum of the acute angles in a right triangle is 90°.

Therefore we have the equation (2) (12x + 4y) + (17x - y) = 90

Substitute (1) to (2):

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17x - y = 50   (3)

We have the system of equations:

\left\{\begin{array}{ccc}12x + 4y = 40&|:4\\17x-y=50\end{array}\right\\\underline{+\left\{\begin{array}{ccc}3x + y = 10\\17x-y=50\end{array}\right}\ \text{add both side of equations}\\.\qquad20x=60\qquad|:20\\.\qquad x=3

Substitute the value of x to (3)

17(3)-y=50\\51-y=50\qquad|-51\\-y=-1\to y=1

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Step-by-step explanation:

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Is the equation y=x+1 / x²+1 in simplest form? Explain how you can tell.
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The factors of the denominator term is not possible and it cannot be simplified. And the simplification is possible with the concept of complex number.

What is polynomial expression?

Polynomial expression are those equation whose highest degree is two. It is also called as quadratic equation. And it is simplified by performing the factors on the given expressions.

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<u>brainly.com/question/1280754</u>

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