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Andru [333]
3 years ago
10

The combined height of one for tree and one pine tree is 21 meters. The height of 4 for trees stacked on top of each other is 24

meters taller than one pine tree. How tall are the types of trees?
Mathematics
1 answer:
slamgirl [31]3 years ago
6 0

Answer:

The height of the fir tree is <u>9 meters</u> tall and the pine tree is <u>12 meters</u>.

Step-by-step explanation:

Given:

Note :→ there is a mistake it is <u>fir tree</u> not for tree.

The combined height of one fir tree and one pine tree is 21 meters.

The height of 4 fir trees stacked on top of each other is 24 meters taller than one pine tree.

Now, to find how tall are the types of trees.

Let the height of one fir tree bex.

And the height of one pine tree be y.

So, the combined height of one fir tree and one pine tree:

x+y=21.

y=21-x..........( 1 )

Now, as given the height of 4 for trees stacked on top of each other is 24 meters taller than one pine tree:

4x=y+24.

Putting the value of equation (1) in the place of y :

4x=21-x+24

<em>Adding both the sides x we get:</em>

5x=21+24.

5x=45.

<em>Dividing both the sides by 5 we get:</em>

x=9\ meters.

<em>So, the height of one fir tree = 9 meters.</em>

Now, putting the value of x in equation (1) we get:

y=21-9

y=12\ meters.

<em>Thus, the height of one pine tree = 12 meters.</em>

Therefore, the fir tree is 9 meters tall and the pine tree is 12 meters tall.

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Alona [7]

Answer:

10/100 = x/125

1250 = 100x

1250/100 = 100x/100

12.5 = x

125 - 12.5 = 112.5

the sale price is $112.5

4 0
2 years ago
You invest $24,000 at a simple interest rate of 12% for 9 years, and your
FinnZ [79.3K]

Answer:

The principal is $2400

Step-by-step explanation:

Given

P = \$24000

t = 9

r =12\%

I = \$25920

Required

The principal amount

The principal amount is the amount invested.

From the question, we understand that $24000 was invested.

Hence, the principal is $24000

8 0
3 years ago
A hot air balloon was flying at an altitude of 300 meters when the pilot decided to land by descending at a rate of 2 meters per
krok68 [10]

Answer:

The answer is "150 seconds".

Step-by-step explanation:

\to distance = 300 \ meter\\\\\to speed = 2 \ \frac{m}{s} \\\\\ formula: \\\\ \bold{speed = \frac{distance}{time}}\\\\

time= \frac{distance}{speed}\\\\

        =\frac{300}{2}\\\\=150  \ seconds

7 0
3 years ago
Whether the expressions 2. 7y - 15 + 2y and 9y 15​
ivanzaharov [21]

Answer:

7y-15+2y= 9y-15

9y-15

.....

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Please help me with the last question
Greeley [361]
You'd solve this by creating the equation
20 + 6x - 1 + x + 14 = 180
33 + 7x = 180
- 33
7x = 147
÷ 7
x = 21
(because angles in a triangle add up to 180°)
And then you'd substitute in the value of x, so
6 × 21 = 126
126 - 1 = 125° = Angle A
21 + 14 = 35° = Angle C
I hope this helps!
7 0
3 years ago
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