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3 years ago

Q+r+s, for q=46, s =54

Mathematics

1 answer:

steposvetlana [31]3 years ago

4 0

Q + r + s.....q = 46, s = 54
46 + r + 54
100 + r <==

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Can someone plz help me with this!

asambeis [7]

Answer:

(arranged from top to bottom)

System #3, where x=6

System #1, where x=4

System #7, where x=3

System #5, where x=2

System #2, where x=1

Step-by-step explanation:

System #1: x=4

$2x+y=10\\x-3y=-2$

To solve, start by isolating your first equation for y.

$2x+y=10\\y=-2x+10$

Now, plug this value of y into your second equation.

$x-3(-2x+10)=-2\\x+6x-30=-2\\7x=28\\x=4$

System #2: x=1

$x+2y=5\\2x+y=4$

Isolate your second equation for y.

$2x+y=4\\y=-2x+4$

Plug this value of y into your first equation.

$x+2(-2x+4)=5\\x+(-4x)+8=5\\x-4x+8=5\\-3x=-3\\x=1$

System #3: x=6

$5x+y=33\\x=18-4y$

Isolate your first equation for y.

$5x+y=33\\y=-5x+33$

Plug this value of y into your second equation.

$x=18-4(-5x+33)\\x=18+20x-132\\-19x=-114\\x=6$

System #4: all real numbers (not included in your diagram)

$y=13-2x\\8x+4y=52$

Plug your value of y into your second equation.

$8x+4(13-2x)=52\\8x+52-8x=52\\0=0$

all real numbers are solutions

System #5: x=2

$x+3y=5\\6x-y=11$

Isolate your second equation for y.

$6x-y=11\\-y=-6x+11\\y=6x-11$

Plug in your value of y to your first equation.

$x+3(6x-11)=5\\x+18x-33=5\\19x=38\\x=2$

System #6: no solution (not included in your diagram)

$2x+y=10\\-6x-3y=-2$

Isolate your first equation for y.

$2x+y=10\\y=-2x+10$

Plug your value of y into your second equation.

$-6x-3(-2x+10)=-2\\-6x+6x-30=-2\\-30=-2$

no solution

System #7: x=3

$y=10+x\\2x+3y=45$

Plug your value of y into your second equation.

$2x+3(10+x)=45\\2x+30+3x=45\\5x=15\\x=3$

3 0

3 years ago

What fraction is equal to .66? A.1/3 B.1/5 C.2/3 D.2/4

photoshop1234 [79]

2/3 is the answer.

1/3 is equal to 33.33333333% 

so 2/3 is equal to 66.6666666%

8 0

3 years ago

Write an equivalent expression to -3(6x^2-10x+9)+8x^2(3x+4)

pychu [463]

Answer:

Step-by-step explanation: hope this help :)

4 0

3 years ago

Read 2 more answers

How many vertices and edges does a cuboid have

anastassius [24]

A cuboid has 8 vertices and 12 edges

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3 years ago

In a square, one pair of opposite sides was made 50% longer and the other pair of opposite sides was made 50% shorter

omeli [17]

Sorry, maybe is too late for you, But the answer is:
For example: 4 x 4=16cm² if one pair of opposite sides was made 50% longer and the other pair of opposite sides was made 50% shorter
It became: 6 x 2=12cm²
12/16=0.75
So, the 75% of the square’s area is the area of the new rectangle.

8 0

3 years ago