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viva [34]
3 years ago
5

Suppose that y varies inversely with x, and y=4 when x=7. What is an equation for the inverse variation

Mathematics
1 answer:
balu736 [363]3 years ago
8 0

Answer:

xy = 28

Step-by-step explanation:

The formula for inverse variation is

xy =k

If y = 4 and x = 7

4*7 = k

28 = k

The equation is xy = 28

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A solid cylinder has a radius of 4 cm and a length of 8 cm is melted down and recast in a solid cube find the dimension of the c
zhannawk [14.2K]

Answer:

7.37108cmx7.37108cmx7.37108cm

Step-by-step explanation:

Find the volume of the cylinder then take the cube route of that. You should end up with ~7.38108cm which is the length, width, and height of your cube. The volume is 402.12386cm cubed.

5 0
3 years ago
Read 2 more answers
Please help!
crimeas [40]

Answer:

The zeros are:

x =4, x=2, x = 5

  • The function has three distinct real zeros.

Hence, option (B) is true.

Step-by-step explanation:

Given the expression

h\left(x\right)=\left(x-4\right)^2\left(x^2-7x+\:10\right)

Let us determine the zeros of the function by putting h(x) = 0 and solving the expression

0=\left(x-4\right)^2\left(x^2-7x+10\right)

switch sides

\left(x-4\right)^2\left(x^2-7x+10\right)=0

as

x^2-7x+\:10=\left(x-2\right)\left(x-5\right)

so

\left(x-4\right)^2\left(x-2\right)\left(x-5\right)=0

Using the zero factor principle

  • \mathrm{If}\:ab=0\:\mathrm{then}\:a=0\:\mathrm{or}\:b=0\:\left(\mathrm{or\:both}\:a=0\:\mathrm{and}\:b=0\right)

so

x-4=0\quad \mathrm{or}\quad \:x-2=0\quad \mathrm{or}\quad \:x-5=0

x =4, x=2, x = 5

Thus, the zeros are:

x =4, x=2, x = 5

It is clear that there are three zeros and all the zeros are distinct real numbers.

Therefore,

  • The function has three distinct real zeros.

Hence, option (B) is true.

4 0
3 years ago
Simplify the expression 5(x-3)(x^2+4x+1)
Scorpion4ik [409]

Simplify the expression 5(x-3)(x^2+4x+1)

it would be I think answer number 3

5 0
3 years ago
Select the correct answer
choli [55]

Answer:

4

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
SIMPLIFY THIS EXPRESSION:<br> 2(z + 3) + 3(5 - 3z)
quester [9]
2z+6+15-9z
-7z+21

Hope this helps
6 0
3 years ago
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