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3 years ago

Select the correct answer from each drop down menu.

Mathematics

1 answer:

KATRIN_1 [288]3 years ago

7 0

Answer: x^2, x<2, 5, 2</=x<4

Step-by-step explanation:

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If xy + 12 = 6x + 7, find y if x =5.

Igoryamba

Answer: look at the picture

Step-by-step explanation: Hope this help :D

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2 years ago

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The earth is about 150 million kilometers from the sun. The orbit around the sun is not a perfect circle, but is approximately a

goldfiish [28.3K]

Answer:

x² + y² = (150,000,000)² is the answer

Step-by-step explanation:

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2 years ago

Solve 247 divided by 10 to the second power + 247 divided by 10 to the second power

ANTONII [103]

10^2 is 100. 247 divided by 100 is 2.47. 2.47 + 2.47 is your answer. Im lazy, add yourself. 4.94

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3 years ago

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.

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2 years ago

PLEASE HELP ME

Vesnalui [34]

Step-by-step explanation:

-(3x+y=32)

3x-2y=17

-3x-y=-32

3x-2y=17

-3y=-15

y=5

3x+(5)=32

-5. -5

3x=27

x=9

Answer:

x=9

y=5

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2 years ago

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