2 years ago

Pls help this is worth 50 points

Mathematics

2 answers:

LekaFEV [45]2 years ago

6 0

Answer:

Ist container = 4.8

2nd container 2.4

Step-by-step explanation:

exis [7]2 years ago

3 0

Answer:

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A boat is being pulled into a dock with a rope attached to the boat at water level. When the boat is 12 feet from the dock, the

Natali5045456 [20]

Given :

A boat is being pulled into a dock with a rope attached to the boat at water level. When the boat is 12 feet from the dock, the length of the rope form the boat to the dock is 3 feet longer than twice the height of the dock above the water.

To Find :

The height of the dock.

Solution :

This will make a right angle triangle as given in link below .

Now , applying Pythagoras theorem :

$(2h+3)^2=h^2+12^2\\\\4h^2+9h+9=h^2+144\\\\h^2+4h-45=0\\\\(h-5)(h+9)=0$

Now , h = 5 or h = -9 .

Now , height cannot be negative .

So , height of the dock is 5 ft .

Hence , this is the required solution .

8 0

3 years ago

The cost of 2 plates of spaghetti & 1 plate of salad is $27.50. The cost for 4 plates of spaghetti & 3 salads is $59.50.

k0ka [10]

2a+1b=27.50

4a+2b=59.50

Multiply first equation by -4 and the second by 2 so you can drop off the a values then add the equations together. Then solve for b. You should get b=6.

Then plug b into one of the original equations and solve for a and you should get 10.75

So a plate of spaghetti is $10.75 and a salad is $6.

Please mark brainliest!

8 0

3 years ago

in the school chorus,2/5 of the students are fourths graders and 1/3 of the students are fifth graders.If there 45 students in c

yulyashka [42]

Answer:

18 students in 4th grade

15 students in 5th grade

Step-by-step explanation:

1/3 of 45 = 15 students in 5th grade