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Kryger [21]
3 years ago
7

Find amount of water displaced by solid spherical ball of diameter 28 cm​

Mathematics
1 answer:
leva [86]3 years ago
3 0

Answer:

11494.04cm³

Step-by-step explanation:

Volume of a sphere

V = 4/3πr³

you got a diameter of 28cm, so half of taht is the radius.

r = 14cm

plug in and solve

V = 4/3πr³

= 4/3π(14)³

= 11494.04cm³

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The sum of two consecutive numbers is -165. Find the value of the smaller number.
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Answer:

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Step-by-step explanation:

x+(x+1)=number

x+(x+1)=-165

2x+1=-165

-1         -1

2x=-166

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x=-83

We can check our work by adding -83+-82=-165 because -83 would be the smaller number.

-83.

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2 years ago
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2 years ago
-7(n - 2) + 2n = -5(n + 6)
skad [1K]

Given the expression below

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Open the brackets

\begin{gathered} -7(n-2)+2n=-5(n+6) \\ -7n+14+2n=-5n-30 \\ -7n+2n+14=-5n-30 \\ -5n+14=-5n-30 \end{gathered}

Collect like terms

\begin{gathered} -5n+14=-5n-30 \\ -5n-(-5n)=-30-14 \\ 0\ne-44 \end{gathered}

Since, the sides are not equal,

Hence, there is no solution

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