2x+y=10x-4y i dont know

Mathematics

2 answers:

Basile [38]3 years ago

7 0

Step-by-step explanation:

2x-10x= -4y-y

-8x= -5y

cancel (-) on both sides we get

8x=4y

Tcecarenko [31]3 years ago

4 0

0= 10x-2x-4y-y
0= 8x-5y
-8x=-5y

You might be interested in

At the end of each year, how much money would you earn in interest if you invested $200 and earned 5.5% simple interest?

Alborosie

$\bf \qquad \textit{Simple Interest Earned}\\\\
I = Prt\qquad 
\begin{cases}
I=\textit{interest earned}\\
P=\textit{original amount deposited}\to& \$200\\
r=rate\to 5\%\to \frac{5}{100}\to &0.055\\
t=years\to &1
\end{cases}
\\\\\\
I=200\cdot 0.055\cdot 1$

7 0

3 years ago

Help please? 15 points here

MakcuM [25]

Answer:

64°

Step-by-step explanation:

In circle with center P, AD is diameter.

$\therefore m\angle DPE + m\angle APE = 180\degree \\\therefore (33k-9)\degree + 90\degree = 180\degree \\\therefore (33k-9)\degree = 180\degree -90\degree \\\therefore (33k-9)\degree = 90\degree \\\therefore 33k-9 = 90\\\therefore 33k= 90+9\\\therefore 33k= 99\\\therefore k= \frac{99}{33}\\\therefore k=3\\ m\angle CPD = (20k +4)\degree \\\therefore m\angle CPD = (20\times 3 +4)\degree \\\therefore m\angle CPD =(60+4)\degree \\\therefore m\angle CPD =64\degree \\m\overset {\frown}{CD} = m\angle CPD\\\therefore m\overset {\frown}{CD} = 64\degree$