All categories

3 years ago

The variables x=9 and y=15 vary directly. Write an equation that relates the variables

Mathematics

2 answers:

snow_tiger [21]3 years ago

8 0

I love your profile picture 56

erik [133]3 years ago

7 0

Answer:

x = 0.6y.

Step-by-step explanation:

x = ky is direct variation where k is some constant;

Now we find k:-

Substituting for x and y:

9 = k*15

k = 9/15 = 0.6

So the equation is

x = 0.6y.

You might be interested in

On a family vacation Amy's dad drove the car at a constant speed and travel 585 miles in 13 hours at this rate how long would it

Zarrin [17]

Answer:

18 hours

Step-by-step explanation:

we know that

Amy's dad drove the car at a constant speed and travel 585 miles in 13 hours

using proportion

Find out how long would it have taken the family to travel 810 miles

Let

x -----> the time in hours to travel 810 miles

$\frac{585}{13}\frac{miles}{hours}=\frac{810}{x}\frac{miles}{hours}\\\\x=13(810)/585\\\\x=18\ hours$

3 0

4 years ago

Read 2 more answers

Solve the following system of equations using an inverse matrix. You must also indicate the inverse matrix, A^{-1},A

yanalaym [24]

Answer:

x-intercept(s):

(

−

)

y-intercept(s):

(

−

)

Step-by-step explanation:

6 0

3 years ago

Anyone who understand this for 16 point s plz

Zielflug [23.3K]

This is pretty open-ended. How about:

$\sqrt 2$ and $\sqrt 3$ are similar because they're both irrational, meaning neither is the ratio of two integers.

$\sqrt 2$ and $\sqrt 3$ are different because $\sqrt{2} < 1.5}$ and $\sqrt{3} > 1.5$ .

5 0

3 years ago

What is the answer to this question

stich3 [128]

Answer:

Step-by-step explanation:

Given the exponential function

f(t) = 228 $(0.975)^{t}$ ← where t is time in years

Substitute t = 20 into f(t), that is

f(20) = 228 × $(0.975)^{20}$ = 228 × 0.60268.... ≈ 137 → A

4 0

3 years ago

Which ratio is equivalent to the ratio 33:36

xenn [34]

Answer:

Step-by-step explanation:

33/3 = 11

36/3 =13

11 :13

5 0

4 years ago