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alexdok [17]
3 years ago
9

Solve this systems of linear equations.separate the x- and y-values with a comma 2x+3y=-6 6x-4y=-44

Mathematics
1 answer:
dusya [7]3 years ago
6 0

Answer:

for the first one ‘x‘: x = -3/2 y -3

for the first one ‘y’: y = -2/3x-2

for the second one ‘x’: x= 2/3 y + -22/3

for the second one ’y’: y = 3/2 x + 11

Step-by-step explanation:

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Which situation can be modeled by the equation y=3x+25
Gnesinka [82]

For this case we have the following situation:

The monthly cost of a gym in the city is $ 3. The initial registration is $ 25. Write a mathematical expression that models the problem.

So we have to define variables:

x: number of months

y: total cost

The mathematical expression that models the problem is:

y = 3x + 25

7 0
3 years ago
How many gallons of pure alcohol should be added to 40 gallons of a 20% solution so
Rudik [331]

Answer:

8/3

Step-by-step explanation:

i put equations as this:

x+40 = y

where x is galllons of pure mixture and y is the gallons of the new mixture

the other equation i id was:

x+0.2(40) = 0.25y

x+8 = 0.25y

y = 4x+32

solve using substitution

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x = 4x-8

-3x = -8

x = 8/3

3 0
3 years ago
Lyndsay has 3 3/4 gallons of paint.She plans on using 1 1/4 gallons on each room.How many rooms will she be able to paint?
Blizzard [7]
3 3/4÷1 1/4= 3 so 3 rooms
8 0
3 years ago
For what value of k does the equation have no solution? kx - 4 = 5x + 8
baherus [9]

Answer:

Your answer is: k = 5+12/x

Isolate the variable by dividing each side by factors that don't contain the variable.

Step-by-step explanation:

Hope this helped : )

7 0
3 years ago
HELP PLEASE !!
mars1129 [50]

Answer:

They don’t

Step-by-step explanation:

They can be the same height but one can be wider than the other

5 0
3 years ago
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