What is the difference (2 x minus 3) minus (x minus 1)? x minus 4 x minus 2 x + 2 x + 4

Mathematics

2 answers:

notka56 [123]3 years ago

5 0

Answer:

x - 2

Step-by-step explanation:

hodyreva [135]3 years ago

4 0

Answer:

$x - 2$

Step-by-step explanation:

We want to find the difference:

$(2x - 3) - (x - 1)$

We expand the parenthesis using the distributive property to get:

$(2x - 3) - (x - 1) = 2x - 3 - x + 1$

Regroup similar terms on the right:

$(2x - 3) - (x - 1) = 2x - x - 3 + 1$

Combine similar terms on the right:

$(2x - 3) - (x - 1) = x - 2$

Therefore the difference is x-2

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In a triangle, the largest angle is always opposite the (Blank) and the smallest angle is always opposite the (Blank) .

Shtirlitz [24]

Answer:

the largest angle is opposite the largest side and the shortest angle is opposite the shortest side

Step-by-step explanation:

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3 years ago

Marty is taking piano lessons. She is going to practice every afternoon. The 1st week she practiced for 11 minutes each day. The

defon

Answer:

$m=7w+4$

Step-by-step explanation:

<u>Linear Modeling</u>

It consist is setting up a linear relationship between two variables, given some experimental data. Only 2 points are needed to set up the equation of a line, but if more than 2 points are used, then the result should use statistical approaches like linear regression to find the best-fit line.

For the question at hand, Marty practices his piano lessons 11 minutes the week #1. It provides the first point (1,11). He practices 25 minutes per day on the third week. It gives us another point (3,25). This is enough to find the equation of a line. The general formula for a line, having two points (m1,w1) (m2,w2) is

$\displaystyle m-m_1=\frac{m_2-m_1}{w_2-w_1}(w-w_1)$