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1 year ago

The ratio of hydrogen to oxygen in a plant sample is 18:12. The sample has 42 units of oxygen.

Mathematics

1 answer:

larisa86 [58]1 year ago

3 0

Answer:63

Step-by-step explanation: H:0=18:12=1.5:1

1.5:1=63:42

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4:3=x:6, find the value of x please help me

natima [27]

Answer:

x=8

Step-by-step explanation:

4:3=x:6

Multiply the first set by 2

4*2 : 3*2

8:6

That means x =8

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3 years ago

For every 3 girls in Mr Hegarty's class there are 2 boys. What is the ratio of girls to boys in the class? Give your answer in i

kirill115 [55]

Answer:2boys for five studenrs so 2/5 and for girls 3/5 so response is 3/5

Step-by-step explanation:

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2 years ago

Read 2 more answers

andrew-mc [135]

Answer:

The angle of depression from Platform A to Platform B is $43.1^{\circ}$

Step-by-step explanation:

Refer the attached figure

The horizontal distance between the platforms is 500 feet i.e. BC = 500

The length of the zip-line is 685 feet i.e. AB = 685

We are supposed to find the angle of depression from Platform A to Platform B

Hypotenuse = 685

Base = 500

$Cos \theta = \frac{Base}{Hypotenuse}\\Cos \theta = \frac{500}{685}\\\theta = cos^{-1}(\frac{500}{685})\\\theta = 43.11^{\circ}$

Hence the angle of depression from Platform A to Platform B is $43.1^{\circ}$

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3 years ago

Jackie bought a circular rug to place on the floor in her bathroom. The rug has a diameter of 6 feet. What is the area of the ru

Genrish500 [490]

Hey!
The area of the circle would be 28.26 feet squared

Lets break it down:

The formula for the area is pi×radius×radius
We have the diameter, so to find the radius, we need to divide the diameter by 2. 6÷2=3
Now that we have the radius, wr can plug in our numbers: 3.14×3×3= the area, or 28.26 feet sq.

Hope this helps!

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2 years ago

The base of a cylindrical

KengaRu [80]

Answer:

Step-by-step explanation:

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1 year ago