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Monica [59]
10 months ago
11

I need help on solving these equations linear. Please helpppp

Mathematics
1 answer:
goldenfox [79]10 months ago
8 0

The solution of the first set of equations is x = 15 and y = 5 and the second is x = 14.25 and y = 7.75.

<h3>What is the equation?</h3>

There are many different ways to define an equation. The definition of an equation in algebra is a mathematical statement that demonstrates the equality of 2 mathematical expressions.

More than one variable may be present inside a linear equation.

a)

As per the given first system of equation,

2x - 4y = 10

x + 5y = 40 → 2x + 10y = 80

Subtract both

10y + 4y = 80 - 10

14y = 70

y = 5

And, x = 40 - 5(5) = 15

b)

As per the given first system of equation,

3x - 5y = 4 and

-2x + 6y = 18 → -x + 3y = 9 → -3x + 9y = 27

Add both

-5y + 9y = 4 + 27

4y = 31

y = 7.75

x = (4 + 5(7.75))/3 = 14.25

Hence "The solution of the first set of equations is x = 15 and y = 5 and the second is x = 14.25 and y = 7.75".

For more about the equation,

brainly.com/question/10413253

#SPJ1

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In general, an expression is in simplest form when it is easiest to use. Example, this: 5x + x − 3. Is simpler as: 6x − 3. Common ways to help you simplify: • Combine Like Terms.Step-by-step explanation:sorry if this is isin't right

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Angle XYZ = 2X° and angle PQR = (8X -20)°. If angle XYZ and angle PQR are supplementary, find the measure of each angle. Angle P
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PQR = 140

Step-by-step explanation:

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3 years ago
Can someone help me understand this ? The app doesn’t understand the equation
butalik [34]

Answer:

c; 1 / (a^12)(b^8)

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6 0
2 years ago
Lucy spends 4 hours a week babysitting. Her sister Lily spends seven eighths as much time babysitting. Does Lily babysit for mor
olganol [36]

Answer:

Lily babysit for <u>less than 4 hours</u>.

Step-by-step explanation:

Given:

Lucy spends in a week babysitting for 4 hours.

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Now, to find whether Lily babysit for more than 4 hours or less than that.

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=\frac{7}{2} \\\\=3\frac{1}{2}\ hours.

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Therefore, Lily babysit for less than 4 hours.

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3 years ago
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