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alexdok [17]
3 years ago
10

The value of a house depreciates by 8% per year. Work out the current value of a house bought 2 years ago for £180000

Mathematics
1 answer:
Diano4ka-milaya [45]3 years ago
8 0

₤ 152352

depreciation factor = 100 - 8 = 92% = 0.92

current value = ₤ 180000 × (0.92)² = ₤ 152352


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Your subtotal at the store was $72.29. You have a 40% off coupon. If the sales tax rate is 9.5%, what is the total price for you
harkovskaia [24]

Answer:

31.93

Step-by-step explanation:

you prob just want the answer but here

1. Find 40% of 72.29 (29.16)

2. find 9.5% of 29.16 that would be $2.77

3. add $2.77 to 29.16

7 0
3 years ago
Are the graphs of the lines in the pair parallel? Explain. y=2\3x-17 4x-6y=-7
Papessa [141]
<span>y=2\3x-17and  4x-6y=-7 implies  - 6y= - 4x -7, and then y= (-4/-6)x +7/6 and so 
y=2/3x+7/6

but when we have y=ax+b and y=a'x+b', the two lines are parallels if a=a', in our case 2/3=2/3 the lines are parallel
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6 0
3 years ago
Which function below is the inverse of f(x) = 7x-1/2
GaryK [48]
F(x)=7x-1/2
 Add the half to the other side afeterreplacing f(x) with a zero
 1/2=7x divide by 7
7/2=x, when y=0
4 0
3 years ago
Can you see an easy way to work out the value of <img src="https://tex.z-dn.net/?f=%5Csqrt%7B%201%5E3%20%2B%202%5E3%20%2B%203%5E
Lina20 [59]

We have the sum of cubes identity

a^3 + b^3 = (a + b) (a^2 - ab + b^2)

and observing that 1 + 4 = 2 + 3, we have

1^3 + 4^3 = (1 + 4) (1^2 - 4 + 4^2) = 5 \times 13

and

2^3 + 3^3 = (2 + 3) (2^2 - 6 + 3^2) = 5 \times 7

Then

\sqrt{1^3+2^3+3^3+4^3+5^3} = \sqrt{5\times13 + 5\times7 + 5\times5^2} = \sqrt{5 \times (20 + 25)} \\\\ ~~~~~~~~ = \sqrt{5^2 \times (4 + 5)} = \sqrt{5^2\times9} = \sqrt{5^2\times3^2} = 5\times3 = \boxed{15}

Alternatively, we have the well-known sum of cubes formula

\displaystyle \sum_{i=1}^n i^3 = \frac{n^2(n+1)^2}4

The sum under the square root is this sum with n=5. Then

1^3+2^3+3^3+4^3+5^3 = \dfrac{5^2\times6^2}4 = 225 = 15^2

and so the square root again reduces to 15.

5 0
2 years ago
Can someone answer this please
yanalaym [24]

Answer:

x=7

Step-by-step explanation:

8x-5y=16

8x-40=16

8x=56

x=7

8 0
3 years ago
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