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3 years ago

Which of the following can be used as "reasons" in a two-column proof?

Mathematics

1 answer:

Fudgin [204]3 years ago

3 0

Answer:

A definition and a theorem can be used as a reason in a two-column proof. A two column proof is assembled into statement and reason columns, where each statement should have verified reason.

Step-by-step explanation:

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BRAINLIEST can someone please help!!!!!

Zielflug [23.3K]

I don't know about the first one but for the second one:

${2}^{3x + 2} - {2}^{3x} = 48 \\ \Leftrightarrow {2}^{3x} {2}^{2} - {2}^{3x} = 48 \\ \Leftrightarrow {2}^{3x} ( 4 - 1) = 48 \\ \Leftrightarrow 3 \times {2}^{3x} = 48 \\ \Leftrightarrow {2}^{3x} = 16 \\ \Leftrightarrow {2}^{3x} = {2}^{4} \\ \Leftrightarrow 3x = 4\Leftrightarrow x = \frac{4}{3}$

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3 years ago

Use the relationships between the angles to find the value of x (please answer)

Varvara68 [4.7K]

Step-by-step explanation:

$x + 15 \degree = 102 \degree \: \\ (corresponding \: \angle s) \\ \therefore \: x = 102 \degree - 15 \degree \\ \huge \red { \boxed{\therefore \: x = 87 \degree}}$

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3 years ago

What is the solution to the system x+ y =4 and 2x - y = -1

Lostsunrise [7]

Answer:

Step-by-step explanation:

hello :

the system is : x+ y =4 ...(*)

2x - y = -1...(**)

add(*) and (**) : 3x=3 so : x=1

put this value into (*) : 1+y=4 so : y=3

one solution : (1 , 3)

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3 years ago

HELP PLEASE. what is 2878 to the third power

Neporo4naja [7]

Multiply 2878 three times.

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Hope this helps :)

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3 years ago

Read 2 more answers

What is the equation of the circle that has a center at (-3, 1) and a radius of 5? A) (x + 3)2 + (y - 1)2 = 5 B) (x - 3)2 + (y +

Gnoma [55]

Answer:

Step-by-step explanation:

The vertex form of the equation of a circle is $(x-h)^2 + (y-k)^2 = r^2$ where (h,k) is the center of the circle and r is the radius. This means that for the circle with center (-3,1) and radius 5 substitute into the vertex form these values. Substitute h = -3, k= 1, and r = 5. The equation becomes $(x--3)^2 + (y-1)^2 = 5^2$ . This simplifies to $(x+3)^2 + (y-1)^2 = 25$ . The solution is C.

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3 years ago