3 years ago

Solve the system.

Mathematics

1 answer:

horrorfan [7]3 years ago

4 0

Answer:

1: x= -3/4 +y/2 - 3z/4

2: y = - 1/3 +2x/3 + 2z/3

3: z= -1/5 - 3x/5

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G=3j+4 for j how do I find r

musickatia [10]

Answer:

Step-by-step explanation:

thats the answer i did it too

7 0

3 years ago

The length of a rectangle is 59 inches greater than twice the width. If the diagonal is 2 inches more than the length, find the

Paul [167]

So.. hmm notice the picture here

we know the length is 59 more than twice the width,
twice the width, 2 * w, or 2w
59 more than that
2w + 59

we also know that, whatever that is, the diagonal of it is,
2 more inches than that, or
(2w + 59) + 2

now.. use the pythagorean theorem
$\bf c^2=a^2+b^2\implies \qquad 
\begin{cases}
a=2w+59\\
b=w\\
c=(2w+59)+2\to 2w+61
\end{cases}
\\\\\\
(2w+61)^2=(2w+59)^2+(w)^2
\\ \qquad\qquad \uparrow\qquad \qquad\qquad \qquad \uparrow \\
\textit{expand using binomial theorem, or FOIL}$

you'd end up with a quadratic, after simplifying, solve for "w"