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Makovka662 [10]

3 years ago

9

Wich calculation will ALWAYS have a result greater than 1

1 answer:

klemol [59]3 years ago

3 0

Step-by-step explanation:

number less than 1 B.4/9+ a fraction less than 12 C. 1 3/4 - a fraction less than 3/4 D.7/8 a number less than 1

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Which list shows the numbers in order from least to greatest?

nata0808 [166]

Answer: second one (B) - 2.045, 2.43, 259

Step-by-step explanation: 2.045 is the lowest value due to the 0 in the hundredths place. 2.43 has a lower value than 259, it being a decimal.

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It takes 68 days for John to plants to grow 3 centimeters. About how many weeks is that? The answers choices are as follow : abo

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Find the value of x. Then classify the triangle

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What is the coefficient in this expression? <br> 17 + 5a

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A person on the ground looks up at an angle of 28° and sees the top of a tree and the top of a building aligned. The tree is 20

lorasvet [3.4K]

Answer:

21.27 meters.

Step-by-step explanation:

Please find the attachment.

Let H and h represent height of building and tree respectively.

We have been given that a person on the ground looks up at an angle of 28° and sees the top of a tree and the top of a building aligned. The tree is 20 m away from the person and the building is 60 m away from the person.

We know that tangent relates opposite side of a right triangle with its adjacent side.

$\text{tan}=\frac{\text{Opposite}}{\text{Adjacent}}$

$\text{tan}(28^{\circ})=\frac{H}{60}$

$60\cdot \text{tan}(28^{\circ})=H$

$60\cdot 0.531709431661=H$

$H=31.90256589966\approx 31.90$

Similarly, we can find height of the tree.

$\text{tan}(28^{\circ})=\frac{h}{20}$

$20\cdot\text{tan}(28^{\circ})=h$

$20\cdot 0.531709431661=h$

$h=10.63418863322\approx 10.63$

$H-h=31.90-10.63$

$H-h=21.27$

Therefore, the difference in heights between the building and tree is 21.27 meters.

3 0

2 years ago