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3 years ago

What is angle of elevation and depression

Mathematics

1 answer:

Stella [2.4K]3 years ago

5 0

Answer:

angle of elevation denotes the angle from horizontal upward to an object

angle of depression denotes the angle from the horizontal downward to the object

Step-by-step explanation:

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Aunty Joan packs a packet of sweets to Alice and Olivia. Alice and Olivia share sweets in the ratio 7:3. Alice gives 3 sweets to

aivan3 [116]

Initially, Alice had 28 sweets and Olivia 12 sweets.

Step-by-step explanation:

First assume that Aunty Joan has x number sweets.

Alice and Olivia shared the x sweets in a ration of 7:3, this means

Alice had 7/10 x sweets and Olivia had 3/10 sweets.

Alice gives 3 sweets to Olivia, Alice will remain with ;

$\frac{7}{10} x-3$

Then the new ratio changes to 5:3 which means Alice will have 5/8 x number of sweets.

Equate the number of sweets for Alice in the two cases, which is

$\frac{5}{8}x=\frac{7}{10} x-3\\ \\\frac{7}{10} x-\frac{5}{8} x=3\\$

$\frac{56x-50x}{80} =3\\\\\\\frac{6}{80} x=3\\\\\\6x=80*3\\\\\\x=240/6\\\\x=40$

So there were 40 sweets at first

Using the ratio of 7:3 then

Alice had 7/10 *40 = 28 sweets

Olivia had 3/10*40= 12 sweets

Alice gave Olivia 3 sweets, so she will remain with 28-3 =25 sweets. Olivia will now have 15 sweets.The new ratio will be 25:15 simplified as 5:3.

Learn More

Ratio : brainly.com/question/11095585

Keywords : Ratio

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3 years ago

Explain how you use a quick picture to find the quotient and remainder

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Example question: There are 38 students in a baseball club. The coach needs to split them up into equal groups of 4. How many groups can be made? How many kids are left over?
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3 years ago

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Need answers asap bae<3 <br>ill mark you the whatever if you answer bestie

BlackZzzverrR [31]

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3 years ago

Allyson Greve has calculated her federal taxable income to be $45,300. She pays a state income tax rate of 3% on her federal tax

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Answer:

1,359

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3% of 45,300 is 1,359

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2 years ago

Hey store gives away gift bags during a cell a visa gift bags 50% are green 20% are yellow and 30% or blue the average number of

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Answer:8

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3 years ago

What is angle of elevation and depression​

What is angle of elevation and depression