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topjm [15]
3 years ago
8

3k+7k-2=6k+16 answer?

Mathematics
2 answers:
masya89 [10]3 years ago
7 0
3k+7k-2=6k+16
10k-2=6k+16
10k-6k=16+2
4k=18
k=18/4
k=9/2
anzhelika [568]3 years ago
7 0

Answer: is 4.5

Step-by-step explanation:

3k+7k-2=6k+16

3k+7k = 10k

10k-2=6k+16

-6k     -6k

4k-2=16

   +2  +2

4k= 18

= therefore the answer is 4.5

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Rationalise the denominator <br>​
Margaret [11]

Step-by-step explanation:

1. \frac{2 \sqrt{3} }{ \sqrt{5} }

multiply

\sqrt{5}

do both the numerator and denominater

\frac{2 \sqrt{3} }{ \sqrt{5} }   \times  \frac{ \sqrt{5} }{ \sqrt{5} }  =  \frac{2 \sqrt{15} }{ \sqrt{25} }  =  \frac{2 \sqrt{15} }{5}

8 0
3 years ago
A sphere has a radius of 6 inches. What is the volume of the sphere in terms of π?
natka813 [3]

The volume of sphere in terms of \pi is 288\pi cubic inches, if the sphere has a radius of 6 inches.

Step-by-step explanation:

The given is,

                       A sphere has a radius of 6 inches

Step:1

                      Formula for volume of sphere is,

                                               Volume, V =\frac{4}{3}\pi  r^{3}...........................(1)

                      where, r - radius of sphere

                      From given,

                                  r -  6 inches

                     Equation (1) becomes,

                                                               = \frac{4}{3}\pi  (6)^{3}

                                                               = \frac{4}{3} \pi(216)            ( ∵ 6^{3} = 6×6×6 =216 )

                                                               =  (1.3333)\pi (216)

        ( The volume of the sphere in terms of π, So keep the value of \pi )

                                                               = 288\pi

                                                               = 288\pi Cubic inches

                           Volume of sphere, V = 288\pi Cubic inches

Result:

              The volume of sphere in terms of \pi is 288\pi cubic inches, if the sphere has a radius of 6 inches.

8 0
3 years ago
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KATRIN_1 [288]

Answer:

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Step-by-step explanation:

8 0
3 years ago
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6 0
3 years ago
-78 IS GREATER THAN OR EQUAL TO - 8 +5n
Leto [7]

Answer:

n\le -14.

Step-by-step explanation:

The statement "-78 IS GREATER THAN OR EQUAL TO - 8 +5n" mathematically can be written as

-78\ge -8+5n.

Add 8:

-78+8\ge -8+8+5n,\\ \\-70\ge 5n.

Divide by 5:

-\dfrac{70}{5}\ge n,\\ \\-14\ge n

or

n\le -14.

4 0
3 years ago
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