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Vsevolod [243]
3 years ago
8

a gardener plants seedlings in a line in small enclosures formed by bricks.Each extra seedling planted means two extra bricks ar

e needed.The formula for the number of bricks needed for n seedlings is (2n+2).Write down an equation and solve it to calculate the number of seedlings that can be planted when there are 78 bricks.
Mathematics
1 answer:
I am Lyosha [343]3 years ago
7 0

38 seedlings

solve 2n + 2 = 78

subtract 2 from both sides

2n = 78 - 2 = 76

divide both sides by 2

n = \frac{76}{2} = 38

number of seedlings that can be planted is 38


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Yellow gumballs = 36
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3 years ago
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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

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8 0
3 years ago
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6 0
3 years ago
My smart people help me love yall! ^^
mr_godi [17]

Answer:

<u>x = 36</u>

Step-by-step explanation:

180 - 126 = 54

90 + 54 + x = 180

144 + x = 180

180 - 144 = x

x = 36

Have a nice day!

7 0
3 years ago
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