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Step2247 [10]
3 years ago
11

For the following system, use the second equation to make a substitution for x in the first equation.

Mathematics
1 answer:
11Alexandr11 [23.1K]3 years ago
8 0

Answer:

The answer is either 3(x-y+3)+2y=7 or 3x-3y+9+2y=7, I can't understand the given multiple choice answers.

Step-by-step explanation:

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Simplify the expression by combining like terms:<br><br> 4n+4(2n+3)
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First, you do the distributive property on:

4(2n+3)

You would get

8n+12

Then add the original part of the equation in (4n)

4n+8n+12

Combine like terms

12n+12 is the answer
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3 years ago
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Alguien sabe que pasa con los grados de los polinomios Cúando se multiplican
allochka39001 [22]

respuesta :

eso es un ejemplo aver si te ayuda

explicacion :

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3 years ago
This is a pyramid problem so please help out
Degger [83]

Answer:

Step-by-step explanation:

LA, Laterial Surface Area, is the lateral surface area of a pyramid. In this case, it is the sum of five triangles with base of 12cm and height that can be calculated as follow:

height^2 = 8.26^2 + 20^2 = 468.23

height = 21.64cm

LA = 5*1/2*12*21.64

= 649.2cm^2

SA, Surface Area, is the sum of LA and base area.

Base area = 5*1/2*12*8.26 = 247.8cm^2

SA = 649.2 + 247.8 =897cm^2

Volume, V = 1/3 * base area * height

= 1/3 * 247.8 * 20

= 1652cm^3

4 0
3 years ago
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Sam Long anticipates he will need approximately $227,300 in 14 years to cover his 3-year-old daughter's college bills for a 4-ye
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Answer:

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Step-by-step explanation:

4 0
3 years ago
What is a way to write 11 more than twice x is less than 44
madam [21]

(2x) + 11 < 44

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4 0
3 years ago
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