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valentina_108 [34]
3 years ago
14

PS 5.1- Solving

Mathematics
2 answers:
Alik [6]3 years ago
7 0

Answer:

84

Step-by-step explanation:

I'm pretty sure correct me if I'm wrong

vladimir2022 [97]3 years ago
4 0

Answer:

84

Step-by-step explanation:

108 / (7+2) = 12

7 x 12 = 84

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Find the solutions of the quadratic equation -9c² +2 +3 = 0.
Tresset [83]

Given that,

An equation : -9c² +2c +3 = 0

To find,

Find the value of x.

Solution,

We have, -9c² +2c +3 = 0

We can solve it using the formula as follows :

x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}

Here, a = -9, b = 2 and c =3

Put the values,

c=\dfrac{-2\pm \sqrt{(2)^2-4(-9)(3)}}{2(-9)}\\\\c=\dfrac{-2+\sqrt{(2)^{2}-4(-9)(3)}}{2(-9)}, \dfrac{-2-\sqrt{(2)^{2}-4(-9)(3)}}{2(-9)}\\\\c=-0.47, 0.69

So, the solution are -0.47 and 0.69.

8 0
3 years ago
The area of the square, the
const2013 [10]

Answer:

B.

Step-by-step explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one.  

Please have a look at the attached photo.  

My answer:

As given in the question, we know that:

The ratio of the area of the circle to the area  of the square is π/4

  • The formula to find the volume of the cone is:

V = 1/3*the height*the base area

<=> V1 = 1/3*h*πr^{2}

  • The formula to find the volume of the pyramid is:

V2 = 1/3*the height*the base area

<=> V =  1/3*h*4r^{2}

=> the ratio of volume of the cone to the pyramid is:

= \frac{V1}{V2}

= (1/3*h*πr^{2} ) / ( 1/3*h*4r^{2} )

= π/4

S we can conclude that the volume of the cone equals π/4  the volume of the  pyramid

Hope it will find you well.

7 0
3 years ago
Answer fast please!
zepelin [54]
I believe it's A but it's not exactly clear
6 0
3 years ago
Read 2 more answers
In ΔKLM, the measure of ∠M=90°, the measure of ∠K=10°, and LM = 86 feet. Find the length of KL to the nearest tenth of a foot.
Archy [21]

Answer:

?

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
(a) Write an expression for the perimeter of
Archy [21]

Answer:

8x+2

Step-by-step explanation:

2(3x-1+x+2)=P

2(4x+1) = P

8x+2

7 0
3 years ago
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