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2 years ago

How do I solve this question?

Mathematics

1 answer:

Oduvanchick [21]2 years ago

4 0

9514 1404 393

Answer:

no, y does not vary directly with x

Step-by-step explanation:

If there is direct variation, the constant of variation can be found as ...

k = y/x

Here, those ratios are ...

y/x = 6/3 = 2

y/x = 18/6 = 3

y/x = 24/8 = 3

The ratio of y to x is NOT A CONSTANT, so there is no direct variation.

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Jenna wants to make a park bench as part of her family's miniature railroad train display. If the display is built to scale wher

Savatey [412]

Answer:

8cm

Step-by-step explanation:

2 cm =1 ft so if i multiply it by 4ft, and remember 2 cm =1 ft so 2×4=8

8cm

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2 years ago

How many american dollars can be cxchanged by NRs100000

balandron [24]

Answer:

877.1929824561 dollars

Step-by-step explanation:

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hope it helps!

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2 years ago

Write a quadratic equation given the roots -1/3 and 5, show your work

Travka [436]

$\boxed{(x - a)(x - b) = 0}$

The equation above is the intercept form. Both a-term and b-term are the roots of equation.

$x = - \frac{1}{3} \\ x = 5$

These are the roots of equation. Therefore we substitute a = - 1/3 and b = 5 in the equation.

$(x + \frac{1}{3} )(x - 5) = 0$

Here we can convert the expression x+1/3 to this.

$x + \frac{1}{3} = 0 \\ 3x + 1 = 0$

Rewrite the equation.

$(3x + 1)(x - 5) = 0$

Simplify by multiplying both expressions.

$3 {x}^{2} - 15x + x - 5 = 0 \\ 3 {x}^{2} - 14x - 5 = 0$

Answer Check

Substitute the given roots in the equation.

$3 {(5)}^{2} - 14(5) - 5 = 0 \\ 75 - 70 - 5 = 0 \\ 75 - 75 = 0 \\ 0 = 0$

$3( - \frac{1}{3} )^{2} - 14( - \frac{1}{3}) - 5 = 0 \\ 3( \frac{1}{9} ) + \frac{14}{3} - 5 = 0 \\ \frac{1}{3} + \frac{14}{3} - \frac{15}{3} = 0 \\ \frac{15}{3} - \frac{15}{3} = 0 \\ 0 = 0$

The equation is true for both roots.

Answer

$\large \boxed {3 {x}^{2} - 14x - 5 = 0}$

8 0

2 years ago

Which function is the inverse of f(x)=9x-3

DIA [1.3K]

F^-1(x)= x/9 + 1/3

To find this, just interchange the variables and solve for y.

y=9x-3
x=9y-3
x+3=9y
divide by nine

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2 years ago

The angles of depression of the top and bottom of a building 50 meters

noname [10]

Step-by-step explanation:

snznwjma.nzjshzbsnznkakj to see you soon and inbox

7 0

2 years ago