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Law Incorporation [45]
3 years ago
12

Sally has £520

Mathematics
1 answer:
PIT_PIT [208]3 years ago
6 0

Answer:

£132

Step-by-step explanation:

15% of  520 is 78

15% of 360 is 54

78 + 54 = 132

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Select the correct answer from each drop-down menu. the endpoints of the longest chord on a circle are (4, 5.5) and (4, 10.5). t
torisob [31]

The equation of this circle in standard form is equal to (x - 4)² + (y - 8)² = 5².

Based on the calculations, the equation of this circle in standard form is equal to (x - 4)² + (y - 8)² = 5²

The equation of a circle.

Mathematically, the standard form of the equation of a circle is given by;

(x - h)² + (y - k)² = r²

Where:

h and k represent the coordinates at the center.

r is the radius of a circle.

The midpoint of the given points represents the center of this circle:

h = (4 + 4)/2 = 4

k = (5.5 + 10.5)/2 = 8

Next, we would determine the radius by using the distance formula for coordinates:

r = √[(x₂ - x₁)² + (y₂ - y₁)²]

r = √[(4 - 4)² + (10.5 - 5.5)²]

r = √[0² + 5²]

r = √25

r = 5 units.

Therefore, the equation of this circle in standard form is equal to (x - 4)² + (y - 8)² = 5².

Learn more about circle here: brainly.com/question/12823137

#SPJ4

6 0
2 years ago
Let f(x) = x^2 – 81. Find f–1(x). <br> Can someone double-check what I have?
Trava [24]
I hope this helps you



y=x^2-81


x^2=y+81


x=square root of y+81


f^-1 (x)= square root of x+81
5 0
3 years ago
Read 2 more answers
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Vlada [557]

Answer:

Step-by-step explanation:

If you want to factor

m^2+11m=0,  you could throw that into the quadratic formula with a = 1, b = 11 and c = 0, but the easier thing to do is to factor out what's common in those 2 terms.  m is common, so when we factor it out:

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That's the factored form.

By the Zero Product Property, either

m = 0 or m + 11 = 0.  

So the 2 solutions to this are

m = 0 or m = -11

Not sure how far you need to go with this.

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musickatia [10]

Answer:

Hi

Step-by-step explanation:

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3 years ago
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