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Phantasy [73]
3 years ago
9

If I add 9 to my number I get 6 what is my number?

Mathematics
2 answers:
const2013 [10]3 years ago
6 0
6-9= -3 so your number is
-3
lyudmila [28]3 years ago
6 0
Should be -3 ......:)
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slant height of a right cone is 5 inches, and radius of its base is 3 inches, what is the lateral area?
Alik [6]
*Hint: The formula for the lateral surface area of a right cone is LA= Πrs

All we have to do is plug in and solve.

LA= Π(3)(5)
LA = 15Π
LA = 47.1238898

The lateral surface area is around 48 inches.
5 0
3 years ago
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Show visual model of 1/2 meter long and 3/10 meter wide
Basile [38]
This would be 5x3 :) 

I did my best to keep the line dotted properly.

3 0
3 years ago
Can anyone help me with these math problems?
Sunny_sXe [5.5K]

Sure.  I'm not sure if I like the computer aided instruction.

\dfrac{\tan A}{\sec A} = \dfrac{ \sin A / \cos A }{1 / \cos A} = \dfrac{\sin A \cos A}{\cos A} = \sin A

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\sec \theta \cot \theta \sin \theta =1

Proof,

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4 0
3 years ago
I need serious help with this one.
SpyIntel [72]

Answer:

Try 20.

Step-by-step explanation:

To round 19.5 to the nearest whole number consider the tenths’ value of 19.5, which is 5 and equal or more than 5. Therefore, we have to round up: the whole number part of 19.5, 19, increases by 1 to 20, and the decimal point and all digits (.5) are removed.

19.5 rounded to the nearest whole number = 20

4 0
11 months ago
I have to use completing the square then put it in vertex form, and I have no clue how the hell do to that.
vodka [1.7K]

Answer:

y=8(x+1)²-2

Step-by-step explanation:

Completing the square is a method of factorising. x²+bx+c=0 becomes x²+bx+(\frac{1}{2}b)²-(\frac{1}{2}b)²+c=0. This then gets converted to make an equation of (x+\frac{1}{2}b)²+(-(\frac{1}{2}b)²+c)=0.

Vertex form is y=a(x-h)²+k.

8x²+16x+6=0 must first be divided by 8 to 8(x²+2x+\frac{6}{8})=0 (as there cannot be a coefficient for x²).

This will become 8(x²+2x+\frac{2}{2}²-\frac{2}{2}²+\frac{3}{4})=0.

From there, using the method above, we can convert it to 8[(x+1)²-1+\frac{3}{4}]=0.

Solving this gets 8[(x+1)²-\frac{1}{4}]=0.

With 8 as a, 1 as -h, and 8×-\frac{1}{4} (-2) as k, we can input this into vertex format to get the result of y=8(x+1)²-2.

**This equation involves completing the square and vertex form, which you may wish to revise. I'm always happy to help!

5 0
3 years ago
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