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alexandr1967 [171]
3 years ago
8

The value of zlatan's house has increased by 7%. His house is now valued at £749000 work out the value of the house before the i

ncrease
Mathematics
1 answer:
Rudiy273 years ago
7 0

Answer:

Value of house before Increase = $700000.

Step-by-step explanation:

Let the value of house before increase be $x.

Increase in value = 7%of x= .07x

Value of house before increase+ Increase in value = Total value.

x+.07x=749000

Adding like terms,

1.07x=749000

Dividing both sides by 1.07.

x=700000.

Value of house before Increase = $700000.


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Answer:

x=\frac{48}{7}\\ y=-\frac{10}{7}

Step-by-step explanation:

5x+3y=30\\3x+6y=12

Let's solve the second equation for x

3x+6y=12\\3x=12-6y\\x=\frac{12-6y}{3}

Now let's replace this in the first equation.

5x+3y=30\\5(\frac{12-6y}{3})+3y=30

Distribute the 5

\frac{60-30y}{3}+3y=30

Individually solve the fractions.

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y=-\frac{10}{7}

Now replace the value of y in any of the two equations to find x.

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3x-\frac{60}{7}=12\\

add \frac{60}{7} on both sides.

3x-\frac{60}{7}+\frac{60}{7} =12+\frac{60}{7}

3x=\frac{(12)(7)+60}{7}

3x=\frac{84+60}{7}\\ 3x=\frac{144}{7}

Multiply by the reciprocal fraction of 3. I suppose you know that 3 is 3/1 hence the inverted fraction would be 1/3

(\frac{1}{3})(3x)=(\frac{144}{7})(\frac{1}{3})

x=\frac{48}{7}

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