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Tomtit [17]
4 years ago
12

4x – 3y = 8 5x – 2y = -11 elimination

Mathematics
1 answer:
lina2011 [118]4 years ago
7 0
Multiply both sides of the equation by

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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)

Let's plug in our values

\displaystyle m-11=\frac{25-11}{3-1}(w-1)

Simplifying:

m-11=7w-7

\boxed{m=7w+4}

3 0
4 years ago
Remove the parentheses from the following expression, and combine like terms.<br> 2x(y-z) + x(y+z)
wel
2x(y-z)+x(y+z)
2xy-2xz+xy+xz
like terms.(2xy+xy=3xy)(-2xz+xz=-xz)
=3xy-xz

7 0
4 years ago
Read 2 more answers
Find the value of x<br> 3+x/4=5
irakobra [83]

Step-by-step explanation:

it think it will help you

5 0
3 years ago
Read 2 more answers
. Micro Office Products has issued 5,000 shares of cumulative preferred stock that will earn dividends at $2.38 per share; it ha
quester [9]
110000 is the total dividends of both preferred stock and common stock
So we need to find the dividend per share common stock

First find the total dividends of preferred stock
5,000×2.38=11,900


Subtract the total dividends of preferred stock for the total dividends to find the total dividends of common stock
110,000−11,900=98,100

Finally divide the total dividends of common stock by the number of common stock to find the dividend per share of common stock
98,100÷12,000=8.175....answer

Hope it helps!
5 0
4 years ago
Write all the square numbers you can round up to 200
frozen [14]
13 and 14 squared all round up to 200. 

13^2=169 rounded to the nearest hundred is 200
14^2=196 rounded to the nearest hundred is 200

We can't go any lower than 13 because 12^2=144, and 144 rounds to 100. We also can't go any higher than 15 because 15^2=225, and 225 rounds down to 200, not up (Thanks Irspow).
:)
6 0
4 years ago
Read 2 more answers
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