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AlladinOne [14]
3 years ago
11

Can you help me with this 20 points!!!!

Mathematics
1 answer:
soldi70 [24.7K]3 years ago
4 0

Answer:

Step-by-step explanation:

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When is slope-intercept form most useful?
Tomtit [17]
Slope intercept is almost the best for everything.
point slope is for when you only know the points on a line
standard form is for when solving systems of equations
6 0
3 years ago
Find the center and the radius of this equation by completing the
Colt1911 [192]

Answer:

x^2 +4x +(4/2)^2 +y^2 -20 y +(20/2)^2 +100 = (4/2)^2 +(20/2)^2

And solving we got:

x^2 +4x+ 4 +y^2 +20y +100 +100 = 4 +100

If we subtract 100 from both sides we got:

(x+2)^2 +(y+10)^2 = 4

C= (-2,-10)

r = \sqrt{4}=2

Step-by-step explanation:

For this case we have the following equation given:

x^2 +4x +y^2 -20 y +100=0

We want to find a general expression given by:

(x-h)^2 +(y-k)^2 = r^2

Where the center is (h.k) and the radius is r.

We can begin completing the squares of the equation given and we got:

x^2 +4x +(4/2)^2 +y^2 -20 y +(20/2)^2 +100 = (4/2)^2 +(20/2)^2

And solving we got:

x^2 +4x+ 4 +y^2 +20y +100 +100 = 4 +100

If we subtract 100 from both sides we got:

(x+2)^2 +(y+10)^2 = 4

Then we can conclude that the center is:

C= (-2,-10)

And the radius would be:

r = \sqrt{4}=2

6 0
3 years ago
Simplify A (x - 5) - A (x + 2)
disa [49]

ax -5a - ax+ a2= ax-ax=0 5a+a2

3 0
3 years ago
Read 2 more answers
WILL GIVE BRAINLIEST!!!
Natalka [10]
Volume of a cylinder= (height) x area of the base (circle)

We know the height = 160 cm (given), let's find the radius of the base.

The circumference of the base = 87.92 = 2πR==> R=87.92/(2π) =13.993 cm

Area of circle = πR²=π(13.993)² = 615.128 cm²

Hence the volume of the cylinder = 615.128 x 160 = 92,420.48 cm³
4 0
3 years ago
Read 2 more answers
Degrees Celsius can be converted to degrees Fahrenheit by multiplying 1 and 4/5 and adding 32 degrees C what is 15 degrees C in
Alexxx [7]

Answer:

15C is 59F

Step-by-step explanation:

As an equation, F = (1 4/5)C + 32. 1 and 4/5 is the same as 9/5.

Substitute 15 for C.

F = (9/5)C + 32

F = (9/5)(15) + 32   Multiply 15 by the top number in 9/5

F = 135/5 + 32       Convert 32 to a fraction over 5

F = 135/5 + 160/5     Add the numerators under the same denominator

F = 295/5        Divide

F = 59              Degrees in Farenheit

Therefore 15°C is 59°F.

7 0
3 years ago
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