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3 years ago

What is the answer? 2y+x=-17 5x-4y=-15

Mathematics

1 answer:

Kazeer [188]3 years ago

7 0

Answer:

x = 4.14 y = -.7

Step-by-step explanation:

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Find the length of HD

mel-nik [20]

Answer:

11 units

Step-by-step explanation:

HPO and DPI are similar triangles

HP/DP = PO/PI

HP/9 = 6/27

HP = 9×6/27

HP = 2

HD = HP + PD

HD = 2 + 9 = 11

7 0

3 years ago

Find the inverse of the rational function <br> F(x)= 2x/x+3, x≠-3

timama [110]

as you already know, to get the inverse of any expression we start off by doing a quick switcheroo on the variables and then solving for "y", let's do so.

$\stackrel{f(x)}{y}~~ = ~~\cfrac{2x}{x+3}\implies \stackrel{\textit{quick switcheroo}}{x~~ = ~~\cfrac{2y}{y+3}}\implies xy+3x=2y\implies xy-2y+3x=0 \\\\\\ xy-2y=-3x\implies \stackrel{\textit{common factoring}}{y(x-2)=-3x}\implies y=\cfrac{-3x}{x-2}\implies \stackrel{f^{-1}(x)}{y}=\cfrac{3x}{2-x}$

3 0

2 years ago

Given point A (3, 8) and point B (-5, 1). Find the following: a.) The coordinates of the midpoint of segment AB. Write your answ

ss7ja [257]

Answer:

Mid point:

$= ( \frac{3 + - 5}{2} , \: \frac{1 + 8}{2} ) \\ = ( - 1, \: 4.5)$

distance:

$= \sqrt{ {( - 5 - 3)}^{2} + {(1 - 8)}^{2} } \\ = \sqrt{64 + 49} \\ = \sqrt{113} \\ = 10.6 \: units$

slope:

$= \frac{1 - 8}{ - 5 - 3} \\ = \frac{ - 7}{ - 8} \\ = \frac{7}{8}$

8 0

3 years ago

Canyou help me plese

Effectus [21]

Answer:

Step-by-step explanation:

The point M is at the intersection of the triangles altitudes.

Point M is the Orthocentre

3 0

3 years ago

Correct answers only please! If you don't know the answer, then please don't guess or say what you think it is.

Nesterboy [21]

Answer:

Option A is correct.

Step-by-step explanation:

From the dimensions first find the volume of the container and then find the estimate ratio of each cookie on diving the volume by number of cookies.

$i.e. \\ 11 \times 6 \times 3 = 198 \\ = > \: \frac{198}{90} = 2.2 \\ \\ also \: from \: the \: second \: relation \\ 6 \times 6 \times 2 = 72 \\ = > \frac{72}{33} = 2.18 \: ( = approx \: 2.2)$

7 0

3 years ago