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3 years ago

How high is a tree that casts a 28-ft shadow at the same time that a 6-ft fence post casts a 8-ft shadow?

Mathematics

1 answer:

Vikentia [17]3 years ago

6 0

Answer: 21 feet.

Step-by-step explanation:

1. You know that the tree casts a 28 feet shadow and that a 6 feet fence post casts a 8 feet shadow, then, you can write the following proportion to solve this problem:

$\frac{x}{28}=\frac{6}{8}$

2. When you solve for the height ot tree (x), you obtain the following result:

$x=\frac{28*6}{8}\\x=21$

3. Therefore, the height of the tree is 21 feet.

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Is this Linear, Exponential, or Quadratic? How do you know? A penny is dropped from the edge of a cliff straight down. The relat

Alchen [17]

Answer:

it is linear

Step-by-step explanation:

now this is a case of a an object falling under gravity so gravity is constant which means that the velocity is increased at a constant rate and therefore the graph is going to be linear

that is a straight line graph I hope you get the point

the velocity is going to be increasing constantly with time

7 0

3 years ago

Andrew has a different cookie recipe that makes 28 cookies. He plans to have 21 guests at the party and wants each guest to have

joja [24]

Answer: Since each recipe makes 28 cookies, tripling the recipe would give him 28(3) = 84 cookies.

Step-by-step explanation: Since each recipe makes 28 cookies, tripling the recipe would give him 28(3) = 84 cookies.

Then divide the total number of cookies by the number of guests: 84 21 = 4. Each person would get 4 cookies.

This process can be modeled by the expressions 28(3) ÷ 21 and

28(3)

21

. This is because the fraction bar represents division.

5 0

3 years ago

Kofi and kweku are two brothers. Kofi is older than kweku. Given that kofi's age is (5x-4) years and kweku's age is (2x+1) years

diamong [38]

Answer:

Kindly check explanation

Step-by-step explanation:

Given the details :

Kofi is older than kweku

kofi's age = (5x-4) years

kweku's age = (2x+1) years

a. write down an expression, interns of x,for how much old is Kofi than kweku

Equate the ages of Kofi and kweku

(5x - 4) = (2x + 1)

5x - 4 = 2x + 1

5x - 2x = 1 + 4

3x = 5

3x - 5

B.) if Kofi is tens years older than kweku, find the value of x and the ages of Kofi and kweku

Then,

(5x-4) = (2x + 1) + 10

5x - 4 = 2x + 1 + 10

5x - 2x = 1 + 10 + 4

3x = 15

x = 5

Kofi's age : 5x - 4

5(5) - 4 = 25 - 4 = 21 years

Kweku's age : (2x + 1)

2(5) + 1 = 10 + 1 = 11 years

6 0

3 years ago

What property is this (8x5) x 10=8x(5x10)

sertanlavr [38]

Answer:

Associative

you can change (8*5) *10 to (8*10) *5

You can change 8*( 5*10) to 10* (8*5)

8 0

3 years ago

A local food mart donates 20% of it's friday's sales to charity.

Digiron [165]

Answer:

$64

Step-by-step explanation:

We have been given that a local food mart donates 20% of it's Friday's sales to charity. This Friday the food mart had sales totaling 320.00 dollars.

To find the the amount donated to the charity, we will find 20% of $320.

$\text{The amount donated to the charity}=\$320\times\frac{20}{100}$

$\text{The amount donated to the charity}=\$320\times0.20$

$\text{The amount donated to the charity}=\$64$

Therefore, $64 were donated to the charity.

5 0

3 years ago

How high is a tree that casts a 28​-ft shadow at the same time that a 6​-ft fence post casts a 8​-ft ​shadow?

How high is a tree that casts a 28-ft shadow at the same time that a 6-ft fence post casts a 8-ft shadow?