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4 years ago

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2x+3y=12 find four solutions

1 answer:

solong [7]4 years ago

5 0

Answer:

1. x=3,y=2

2.x=0,y=4

3.x=-3,y=6

4.x=6,y=0

Step-by-step explanation:

x=3, y=2

2(3)+3(2)=6+6=12

x=0, y=4

2(0)+3(4)=0+12=12

x=-3, y=6

2(-3)+3(6)=-6+18=12

x=6,y=0

2(6)+3(0)=12+0=12. Hope this helps!

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2x-3y=7 and y=3x-7 how do you solve this using subsitution

adell [148]

$2x-3y = 7~~~....(i)\\\\y = 3x -7~~~....(ii)\\\\\\\text{Substitute}~ y = 3x -7~ \text{in equation (i):}\\\\\\2x-3(3x-7) = 7\\\\\implies 2x -9x + 21 =7\\\\\implies -7x = 7 -21\\\\\implies -7x = -14\\\\\implies x = \dfrac{-14}{-7} = 2\\\\\\\text{Substitute x = 2 in equation (ii):}\\\\y=3(2) -7 = 6 -7 = -1\\\\\\\text{Hence (x,y) =(2,-1)}$

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2 years ago

Elise walks diagonally from one corner of a square plaza to another. Each side of the plaza is 5050 meters.

goblinko [34]

Answer:

The diagonal distance across the plaza is 7141.8 meter. Step-by-step explanation:

Given : Elise walks diagonally from one corner of a square plaza to another. Each side of the plaza is 5050 meters.

To find : What is the diagonal distance across the plaza?

Solution :

We have given the side of a square a=5050 m

The length of the diagonal is multiply the length of square with square root 2.

$D=\sqrt{2} (a)$

Substitute the value of a in the diagonal formula,

$D=\sqrt{2} (5050)$

$D=1.414\times 5050$

$D=7141.77$

Nearest tenth = 7141.8 m

Therefore, The diagonal distance across the plaza is 7141.8 meter.

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3 years ago

What is 3/4 to the negative 1 power

umka21 [38]

Answer:

4/3

Step-by-step explanation:

To the power of negative one just means 1 divided by and 1 divided by 3/4 is just 4/3

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3 years ago

3. Adam deposits 4

8090 [49]

Answer:

$3105.97

Step-by-step explanation:

checks add up to $2333.66

then add it change up

33 $1=$33

103 $5=$515(10 $5=$50 $50*10=500 +$15 cause 3$5=$15)

1$10=10

12 25¢=$3(4quarters make $1 4/12=$3)

5 10¢=50¢

200 5¢= $10(20 5¢=$1 so 20*10=200 so have $10)

81 1¢=81¢

change added together=$772.31

now add checks and cash=$3105.97

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3 years ago

Is the following a function? (2,5),(-9,5), (1,8), (3,2), (-2,1)? <br> A.yes<br> B.no

ohaa [14]

Answer:

Yes

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers