All categories

3 years ago

The equation y=19x relates proportional quantities x and y. what is the value of x when y is 4?

Mathematics

2 answers:

Romashka [77]3 years ago

4 0

Answer: The required value of x is $\dfrac{4}{19}.$

Step-by-step explanation: Given that the following equation relates proportional quantities x and y :

$y=19x~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)$

We are to find the value of x when y is 4.

To find the value of x, we must substitute y = 4 in equation (i) and find the corresponding value of x.

From equation (i), we get

$y=19x\\\\\Rightarrow 4=19x\\\\\Rightarrow x=\dfrac{4}{19}.$

Thus, the required value of x is $\dfrac{4}{19}.$

azamat3 years ago

3 0

X = 36

simplify both sides of the equation, isolate the variable,

You might be interested in

The transformation of 'f' is represented by 'g'. Write a rule for g. f(x)=\root(3)(x). Then show your check steps.

podryga [215]

Answer:

$g(x)=-2\sqrt[3]x$

$g(x) = -2f(x)$

Step-by-step explanation:

Given

$f(x) = \sqrt[3]x$

Required

Write a rule for g(x)

See attachment for grid

From the attachment, we have:

$(x_1,y_1) = (-1,2)$

$(x_2,y_2) = (1,-2)$

We can represent g(x) as:

$g(x) = n * f(x)$

So, we have:

$g(x) = n * \sqrt[3]x$

For:

$(x_1,y_1) = (-1,2)$

$2 = n * \sqrt[3]{-1}$

This gives:

$2 = n * -1$

Solve for n

$n = \frac{2}{-1}$

$n = -2$

To confirm this value of n, we make use of:

$(x_2,y_2) = (1,-2)$

So, we have:

$-2 = n * \sqrt[3]1$

This gives:

$-2 = n * 1$

Solve for n

$n = \frac{-2}{1}$

$n = -2$

Hence:

$g(x) = n * \sqrt[3]x$

$g(x)=-2\sqrt[3]x$

or:

$g(x) = -2f(x)$

4 0

3 years ago

- {(-2, 6), (2.0), (3,6), (4, -1), (5,3)} is it a function

nikitadnepr [17]

Yes because none of the x’s are the same

3 0

3 years ago

What is the equation?

professor190 [17]

Y= is the answer 3/2x -2

8 0

3 years ago

Solve for n.<br> 1–3n=<br> –<br> 9+n+2

iris [78.8K]

Answer:

Step-by-step explanation:

1-3n=-9+n+2 ---> -3n-n=-1+-9+2 --> -4n=-8 ---> n=2

3 0

3 years ago

Ax + b2 = cx + d2<br> ????

ryzh [129]

Answer:

x=b^2+d^2/a-c

Step-by-step explanation:

5 0

3 years ago