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Morgarella [4.7K]
2 years ago
7

Solve using substitution. y = –1 2x − y = –1

Mathematics
2 answers:
irakobra [83]2 years ago
8 0
X =1 I had this question
stiv31 [10]2 years ago
5 0

ANSWER: Given the system of equations, the valid answers are:

x = -1

y = -1

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The cost of 90 kg of rice is 4500. what is the cost of 2 quintal of rice?​
gayaneshka [121]

Answer:

The cost of 2 quintal of rice is $10,000.

Step-by-step explanation:

To determine the cost of 2 quintals of rice, knowing that 90 kilos of said product is worth $ 4,500, it is first necessary to establish the equivalence between quintals and kilograms. In this regard, a quintal is equivalent to 100 kilograms, so 2 quintals are equivalent to 200 kilos.

Now, to determine the cost per kilogram of rice, the following calculation is required:

4,500 / 90 = X

50 = X

Therefore, 1 kilogram of rice costs $ 50. Thus, since 200 x 50 equals 10,000, 2 quintals of rice will cost $ 10,000.

5 0
3 years ago
ABCD is a parallelogram. Find the values of x and y.
Komok [63]

Answer:

x = 8; y = 29

Step-by-step explanation:

In a parallelogram, opposite angles are congruent.

8x = 7x + 8

x = 8

4y = y + 87

3y = 87

y = 29

6 0
3 years ago
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The circumference of a circle is 704 cm,find its area
Digiron [165]
The circumferince of the circle is 2πR ;
The area of the circle is πR^{2};
Then, 2πR = 704 ;
R = 352 / π ;
πR^{2} = π × ( 352 / π )^2 = ( 352^2) / π = 123904 / π ≈ 39459.87 ≈ 39460 cm^2 ;
5 0
2 years ago
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HELP PLEASEEEE FAST<br> 128<br> 164<br> 140
kenny6666 [7]

Answer: 140 m3

Step-by-step explanation:

Multiply the area of the trapezoid face by the length .

Since the area is 20, you multiply it by 7 to get 140

7 0
3 years ago
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if one banch of cookies call for 5 eggs, how many banches can you make with 24 eggs.will there be any left over.
9966 [12]
You can make four batches of cookies with four eggs left over. 5 goes into 24 four times with a remainder of 4. 
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3 years ago
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