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Naily [24]
4 years ago
7

How many solutions are there to the following system of equations?

Mathematics
1 answer:
juin [17]4 years ago
6 0
Hello,

Answer A.

2x+5y=-11 (1)
10x+25y=-55==>2x+5y=-11 (2)

(1)-(2)==>0=0 verified for all reals for x and y


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Answer:

  21.  3x^2 +7x

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Step-by-step explanation:

21. The perimeter is the sum of the side lengths.

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  P = x^2(1 +2) +x(3 +4) +(1 -1) . . . . combine like terms

  P = 3x^2 +7x

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22. The area is the product of the dimensions.

  A = (3x)(2x^2 +1)

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3 years ago
How do you find the volume of a right triangular prism? Please explain each step. Thank you!!
dem82 [27]

Answer and Step-by-step explanation:

Remember the formula for calculating volume is:  

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V = A X h.

For a triangle the area is calculated using the formula:  

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A = 0.5 X b X a.

So to calculate the volume of a triangular prism, the formula is:  

V = 0.5 X b X a X h.

3 0
4 years ago
How do i multiply a mixed number?
Lera25 [3.4K]
If a it's by a whole number you just multiply it by the numerator
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7 0
3 years ago
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Please i need help my homework is really hard<br> .
Usimov [2.4K]

Answer:

f' (n)=9

Step-by-step explanation:

is this what you were looking for?

4 0
3 years ago
Find all of the solutions for the following equation.<br> 2 sin 0 + 3 = sin 0 + 2
den301095 [7]

Answer:

Step-by-step explanation:

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