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2 years ago

5

5x−y=6 −2x+y=8 combining equations

2 answers:

lapo4ka [179]2 years ago

8 0

Answer:

x=9 y=2

Step-by-step explanation

adoni [48]2 years ago

5 0

Answer:

<h2>x=2</h2><h2>y=4</h2>

Step-by-step explanation:

5x-y=6

2x+y=8

add them up

7x=14

divide by 7 to get x

x=2

fit it into both equation

y=4

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Please help, i’ll give brainiest answer :)<br> [Image]

anygoal [31]

Answer: 20

<u>Step-by-step explanation:</u>

Step 1: Find the vertices (intersections) of the constraints by either graphing or solving the system of equations. I graphed them and found two of the vertices: (0, 1) and (4,0) but needed to solve the system to find the third vertex (point of intersection).

-x + 3 = $\frac{1}{3}x$ + 1

<u>+x -1 </u> <u> +x -1 </u>

2 = $\frac{4}{3}x$

(3)2 = $(3)\frac{4}{3}x$

6 = 4x

<u> ÷4 </u> <u>÷4 </u>

$\frac{3}{2}$ = x

y = $\frac{1}{3}x$ + 1

= $\frac{1}{3}(\frac{3}{2)}$ + 1

= $\frac{1}{2}$ + 1

= $\frac{3}{2}x$

Third vertex is at $(\frac{3}{2},\frac{3}{2)}$

Step 2: Input the vertices into the objective function: C = 5x - 4y

(0, 1): C = 5(0) - 4(1)

= 0 - 4

= -4

$(\frac{3}{2},\frac{3}{2)}$ : C = 5 $(\frac{3}{2})$ - 4 $(\frac{3}{2})$

= $\frac{15}{2}$ - $\frac{12}{2}$

= $\frac{3}{2}$

= 1.5

(4, 0): C = 5(4) - 4(0)

= 20 - 0

= 20

Step 3: Evaluate the answers above to find the maximum: <em>20</em>

5 0

3 years ago

To make a certain shade of paint, Anya mixed 2/3

Jlenok [28]

Answer:

4 cups

Step-by-step explanation:

it should be 4 cups

4 0

3 years ago

Martin have a 32-foot fence around a square garden. There are 4 equal sections.Martin paint 13 of one section of the fence. What

a_sh-v [17]

Answer:

0.01923 foot

Step-by-step explanation:

<em>area painted of one section = 1/13×8 </em>

<em> area painted of one section= 0.6154 foot</em>

<em> f</em>ence = 32 foot

<em> so, </em>

<em>a</em>rea painted of fence = 0.6154/32

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3 years ago

21 is 60% of what number

irga5000 [103]

The answer is 12.6 %.
60% = 60 / 100 = 0.6

60% of 21
= 60% * 21
= 0.6 * 21
= 12.6

6 0

4 years ago

Read 2 more answers

Solve: 3x-8 = 6(1 – 2x) +16

leva [86]

Answer:

x=2

Step-by-step explanation:

Attached Picture...

7 0

2 years ago