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OverLord2011 [107]
2 years ago
13

Substitute X=3y X-3y=0

Mathematics
2 answers:
OleMash [197]2 years ago
8 0

Step-by-step explanation:

x=3y

put

x=3y

3y-3y=0

0=0

nadya68 [22]2 years ago
4 0

Answer:3y-3y=0

Step-by-step explanation: They are giving you a value for X that is 3y. You put that value in place of x. So, if x=12 and they want you to substitute for x-3y=0, you would have 12-3y=0....but the value of x in your question is 3y....so you replace the x in the equation with it's value...which is given to you as 3y....or in my example, 12.

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The table below shows the cube roots of different numbers:
Mila [183]

part A)

\bf \begin{array}{|c|cccccc|ll} \cline{1-7} x&8&27&64&125&&x\\ \cline{1-7} y&\stackrel{\sqrt[3]{8}}{2}&\stackrel{\sqrt[3]{27}}{3}&\stackrel{\sqrt[3]{64}}{4}&\stackrel{\sqrt[3]{125}}{5}&&\sqrt[3]{x} \\ \cline{1-7} \end{array}~\hspace{10em}y = \sqrt[3]{x}

part B)

f(x) = 10 + 20x

so if you rent the bike for a few hours that is

1 hr.............................10 + 20(1)

2 hrs..........................10 + 20(2)

3 hrs..........................10 + 20(3)

so the cost is really some fixed 10 + 20 bucks per hour, usually the 10 bucks is for some paperwork fee, so you go to the bike shop, and they'd say, ok is 10 bucks to set up a membership and 20 bucks per hour for using it, thereabouts.

f(100) = 10 + 20(100) => f(100) = 2010.

f(100), the cost of renting the bike for 100 hours.

4 0
2 years ago
The larger of two numbers is four times the smaller number, and their difference is 18. Find the two numbers.
podryga [215]

Answer:

x = 12 , y = 10

Step-by-step explanation:

Let x , y are two numbers.

x > y

1 ) Three times the greater is 18 times their

difference

3x = 18( x - y )

x = 6( x - y )

x = 6x - 6y

6y = 5x

y = 5x/6 ——-( 1 )

2 ) 4 times the smaller is 4 less than twice

the sum of the two

4y + 4 = 2 ( x + y )

2y + 2 = x + y

y = x -2 ——( 2 )

From ( 1 ) and ( 2 ) ,

5x/6 = x -2

( 5x /6 ) - x = -2

( 5x - 6x ) /6 = -2

-x = -12

x = 12

Put x = 12 in equation ( 2 ) , we get

y = 12 - 2

y = 10

Therefore ,

x = 12 , y = 10

7 0
3 years ago
In the recent year 18.2% of all registered doctors were females. If there were 57,000 females registered doctors that year what
harina [27]
Your equation is

0.194*x = 43400,

where x is the unknown total number of registered doctors, which is under the question.

Solve the equation to get the answer:

x = 43400/0.194 = 223711 registered doctors.
4 0
2 years ago
If a= lw and if l= 1.5 and w = 0.75 what does a equal
stira [4]
Oi :)

a= l*w
a=1.5 * 0.75
a= 1.125
3 0
3 years ago
Read 2 more answers
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Kaylis [27]

Answer:

84 degree

Step-by-step explanation:

the new supposed line is parallel to the given parallel lines..

4 0
3 years ago
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