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Gnom [1K]
3 years ago
15

Please help me i need the answers help me please ​

Mathematics
1 answer:
Aloiza [94]3 years ago
6 0

Answer:

scientists

Step-by-step explanation:

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Suppose you have entered 97​-mile biathlon that consists of a run and a bicycle race. During your​ run, your average velocity is
KonstantinChe [14]

The distance of the run Will be 16miles and the Distance of the bicycle race will be 81 miles.

<h3>What is speed?</h3>

Speed is defined as the ratio of the time distance travelled by the body to the time taken by the body to cover the distance.

Distance = average velocity × time

Let the time and distance of the run, respectively, be t₁ and.d₁

Let those of the bicycle race be t₂ and d₂

From the question,

t₁ + t₂ = 5

d₁ = 8t₁

d₂ = 27t₂

Total distance = 97

8t₁ + 27t₂ = 97

8 ( 5 - t₂ ) + 27t₂ = 97

40 - 8t₂ + 27t₂ = 97

40 + 19 t₂ = 97

19t₂ = 57

t₂ = 3 hours

t₁ + t ₂ = 5

t₁ = 5 - t₂

t₁ = 5 - 3 = 2 hours

Now the distances are calculated as:-

d₁ = 8t₁ = 8 x 2 = 16 miles

d₂ = 27t₂ = 27 x 3 = 81 miles

Therefore the distance of the run Will be 16miles and the Distance of the bicycle race will be 81 miles.

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3 0
3 years ago
How to find a missing side in a right triangle using trigonometry
Triss [41]

Answer:

Wow - that is a LOT to ask in just 1 question.

Here is a trigonometry tutorial.  https://www.1728.org/trigtutr.htm

Step-by-step explanation:


7 0
4 years ago
PLEASE HELP ASAP
katrin [286]

Corey stepped back 59.71 feet to get a better view of the bird.

Explanation:

This is a right angled triangle. Let \theta be the angle of elevation.

Let the adjacent side of the triangle be x for the angle \theta

Let the opposite side of the triangle by y for the angle \theta

Thus,

\tan \theta=\frac{y}{x}

Since, the height of the tree is 80 feet, y=80

To find the value of x, let us substitute y=80 and \theta=68

x=\frac{80}{\tan 68^{\circ}}=32.32

Since, Corey moves back a few steps to gain a better view of the bird, the angle of elevation is 41°

Now, we shall find the x for  y=80 and \theta=41

x=\frac{80}{\tan 41^{\circ}}=92.03

To find how many feet Corey step back is to subtract the value of two adjacent sides, thus,

x=92.03-32.32=59.71

Thus, Corey stepped back 59.71 feet to get a better view of the bird.

6 0
3 years ago
Graph the system of inequalities y&gt; 2x-3 and 3y-x≤6
Veronika [31]
Y > 2x - 3
3y - x ≤ 6
       ↓
y = 2x - 3
3y - x = 6

    3(2x - 3) - x = 6
3(2x) - 3(3) - x = 6
        6x - 9 - x = 6
        6x - x - 9 = 6
             5x - 9 = 6
             <u>    + 9 + 9</u>
                  <u>5x</u> = <u>15</u>
                   5      5
                    x = 3
y = 2x - 3
y = 2(3) - 3
y = 6 - 3
y = 3
(x, y) = (3, 3)
4 0
4 years ago
PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU B
Sveta_85 [38]

Answer:

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Think of your story as more of a summary than a work of fiction; you must cover a

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free body diagram can be used to help work out the net force acting on an object. True or, false?Columbian exchange. Tell a story in chronological order of the changes that the community undergoes as it and the communities around it make contact with Europeans over a span of roughly 50 to 100 years.

This section is worth 20 points. See the scoring rubric for more details on how you

will be graded

Use the evidence you gathered to tell the story of a hypothetical indigenous

community in the Americas and its experience involving the Columbian Exchange.

Come up with a community whose circumstances are typical of many in Central

America, the West Indies, or another part of the Americas that had direct contact with

Europeans. Tell the story in chronological order, but feel free to skip whole years or

decades so that you can cover each of the important topics related to the activity: the

availability of goods, the effects of disease, and the impact of European culture

(language and religion, for example), at the very least.

Think of your story as more of a summary than a work of fiction; you must cover a

large span of time in few words. Base the details of the story on factual evidence and

cite your sources, but keep in mind that the text should be written as a story, not as

an essay with a conventional introduction, body, and conclusion. Aim for about 700

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free body diagram can be used to help work out the net force acting on an object. True or, false?

Step-by-step explanation:

where my brainlest

8 0
3 years ago
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