Ask question

Ask question

All categories

2 years ago

6

A housekeeper had 3/7 of a spray bottle of a cleaning solution. Used 1/9 of the solution in a day . How much of the bottle did s

he use

1 answer:

olga nikolaevna [1]2 years ago

4 0

Answer:

27/7 or 3 6/7

Step-by-step explanation:

3/7 divided by 1/9 = 27/7

rounded to 3

Have a nice day

You might be interested in

Find the area of the parallelogram.

Ivenika [448]

Answer:

132 cm

Step-by-step explanation:

22x6=132

7 0

2 years ago

S is inversely proportional to t . When s = 0.5 , t = 7 Work out t when s = 5

shtirl [24]

Answer:

t = 0.7

Step-by-step explanation:

s = k/t where 'k' is the constant of variation

given: 0.5 = k/7 so k = 3.5

5 = 3.5/t

5t = 3.5

t = 0.7

4 0

2 years ago

A boat can travel at an average speed of 10 miles per hour in still water. Traveling with the current, it can travel 6 miles in

oksano4ka [1.4K]

Answer: The speed of the current is 2 miles per hour.

Step-by-step explanation:

We know that the speed of the boat is:

S = 10 mph.

When the boat travels with the current, the speed will be:

S = 10mph + x

where x = speed of the current.

When the boat travels against the current, the speed will be:

S = 10mph - x

Now, for a given amount of time T, when the boat travels with the current, it moves a distance of 6 miles.

Then we have the equation:

(10mph + x)*T = 6mi

And against the current, in the same time the boat moves 4 mi, then:

(10 mph - x)*T = 4mi

Then we have the system of equations:

(10mph + x)*T = 6mi

(10 mph - x)*T = 4mi

Now, we can take the quotient of these two equations and get:

((10mph + x)*T)/((10 mph - x)*T) = (6mi/4mi)

(10mph + x)/(10 mph - x) = 3/2

Now we can solve this for x.

(10mph + x) = (3/2)*(10 mph - x)

10mph + x = (3/2)*10mph - (3/2)*x

x + (3/2)*x = (3/2)*10mph - 10mph

(5/2)*x = (1/2)*10mph = 5mph

x = (2/5)*5mph = 2mph.

The speed of the current is 2 miles per hour.

6 0

2 years ago

Read 2 more answers

Find x<br><br><br><br><br> Thanks for the help in advance!

Marina86 [1]

I'm not sure if this is the easiest way of doing this, but it surely work.

Let the base of the triangle be AB, and let CH be the height. Just for reference, we have

$AH=2,\quad HB=6,\quad AC=x$

Moreover, let CH=y and BC=z

Now, AHC, CHB and ABC are all right triangles. If we write the pythagorean theorem for each of them, we have the following system

$\begin{cases}4+y^2=x^2\\36+y^2=z^2\\x^2+z^2=64\end{cases}$

If we solve the first two equations for y squared, we have

$y^2=x^2-4\\y^2=z^2-36$

And we can deduce

$z^2 = x^2+32$

So that the third equation becomes

$x^2+x^2+32=64 \iff 2x^2 = 32 \iff x^2=16 \iff x=4$

(we can't accept the negative root because negative lengths make no sense)

7 0

2 years ago

If granola costs $2.40 per pound, how much does 0.9 pound of granola cost?

Mnenie [13.5K]

$2.16 per 0.9 pounds of granola

8 0

2 years ago

Read 2 more answers