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3 years ago

3/2n-7/2n = - 8/5What does n equal?

Mathematics

1 answer:

Vinvika [58]3 years ago

4 0

N would equal 0.8. Hope this helps.

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A tree with a height of 4 ft casts a shadow 15ft long on the ground how tall is another tree that cast a shadow which is 20ft lo

wariber [46]

Height of another tree that cast a shadow which is 20ft long is 5 feet approximately

<h3><u>Solution:</u></h3>

Given that tree with a height of 4 ft casts a shadow 15ft long on the ground

Another tree that cast a shadow which is 20ft long

<em><u>To find: height of another tree</u></em>

We can solve this by setting up a ratio comparing the height of the tree to the height of the another tree and shadow of the tree to the shadow of the another tree

$\frac{\text {height of tree}}{\text {length of shadow}}$

Let us assume,

Height of tree = $H_t = 4 feet$

Length of shadow of tree = $L_t = 15 feet$

Height of another tree = $H_a$

Length of shadow of another tree = $L_a = 20 feet$

Set up a proportion comparing the height of each object to the length of the shadow,

$\frac{\text {height of tree}}{\text {length of shadow of tree}}=\frac{\text { height of another tree }}{\text { length of shadow of another tree }}$

$\frac{H_{t}}{L_{t}}=\frac{H_{a}}{L_{a}}$

Substituting the values we get,

$\frac{4}{15} = \frac{H_a}{20}\\\\H_a = \frac{4}{15} \times 20\\\\H_a = 5.33$

So the height of another tree is 5 feet approximately

8 0

2 years ago

A test has 20 questions. If peter gets 80% correct, how many questions did peter missed?

Umnica [9.8K]

16 because if you put 16 into a percentage it's 80. 16 divide 20 times 100 equal 80

8 0

2 years ago

Read 2 more answers

4. The base of a triangle is 4 3/4ft. The height of the

astra-53 [7]

Answer:

39 $\frac{9}{10\\}$

Step-by-step explanation:

4 $\frac{3}{4}$ × 8 $\frac{2}{5}$ = 39 $\frac{9}{10\\}$

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3 years ago

Please answer correctly !!!!! Will mark Brianliest !!!!!!!!!!!!!!

Hoochie [10]

Answer:

Step-by-step explanation:

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2 years ago

15 is 23% of what number

rosijanka [135]

15 = 0.23x
x = 65.2

therefore 15 is 23% of 65.2

4 0

2 years ago