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dlinn [17]
3 years ago
12

Solve the following system of equations: x − 2y = 5 2x − 4y = 10

Mathematics
1 answer:
emmasim [6.3K]3 years ago
5 0
\left\{\begin{array}{ccc}x-2y=5\\2x-4y=10&|divide\ both\ sides\ by\ (-2)\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}x-2y=5\\-x+2y=-5\end{array}\right}\\.\ \ \ \ \ \ \ \ \ \ \ 0=0-true\\\\Answer:infinitely\ many\ solutions\    \left\{\begin{array}{ccc}x\in\mathbb{R}\\y=\dfrac{x-5}{2}\end{array}\right
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This is due in one hour
UNO [17]

Answer:

The answer to the first one is y = 4/7 x − 13 /7

The second one is already in standard form

Step-by-step explanation:

6 0
3 years ago
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Solve the equation ƒ - (-4) = 12.<br> ƒ = -8<br> ƒ = 16<br> ƒ = 8<br> ƒ = -9
Anarel [89]

Step-by-step explanation:

-8 - -4= -8+4=-4

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2 years ago
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Find the volume and explain please ASAP.
olya-2409 [2.1K]

Answer:

1395in^3

Step-by-step explanation:

First find the volume of the cuboid, 15in x 9in x 7in = 945in^3

Then find the volume of the rectangular pyramid using the formula V=lwh/3, the total height is 17in so subtract the height of the cuboid from the total height, giving you 10in.

V=(15in)(9in)(10in)/3 = 450in^3

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3 0
3 years ago
4m² – 3m6 – 5m4<br> What is the degree of the polynomial?
Papessa [141]

Answer:

Degree of the polymonial is the highest of the degrees of the polynomial's monomials with non-zero coefficients.

Step-by-step explanation:

I think the equation is 4m² – 3m^{6}- 5m^{4}

Therefore, degree of the polynomial is the sum of the powers of the variables,

2 + 6 + 4 = 12

Hope this helps!

3 0
3 years ago
Solve for x. 2x^2-4x=0<br> A. <br> 0, -4<br> B. <br> 0, -2<br> C. <br> 0, 2<br> D. <br> 2, 4
madam [21]

Step-by-step explanation:

2x²-4x=0

2x²=4x

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option C

7 0
2 years ago
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