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2 years ago

Chords and arcs. Can someone please help me with this and explain???20 points

Mathematics

1 answer:

anyanavicka [17]2 years ago

5 0

Answer:

Step-by-step explanation:

So the line segment CD is 12.7 and half that is 6.35. I wanted this 6.35 so I can look at the right triangle there and find the angle there near the center. This will only be half the answer. So I will need to double that to find the measure of arc CD.

Anyways looking at angle near center in the right triangle we have the opposite measurement, 6.35, given and the hypotenuse measurement, 9.06, given. So we will use sine.

sin(u)=6.35/9.06

u=arcsin(6.35/9.06)

u=44.5 degrees

u represented the angle inside that right triangle near the center.

So to get angle COD we have to double that which is 89 degrees.

So the arc measure of CD is 89.

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An international company has 27,600 employees in one country. If this represents 34.8% of the company's employees, how many empl

stepan [7]

Answer:

The total number of employees are 79310 .

Step-by-step explanation:

Formula

$Percentage = \frac{Part\ value\times 100}{Total\ value}$

As given

An international company has 27,600 employees in one country. If this represents 34.8% of the company's employees .

Part value = 27600

Percentage = 34.8%

Putting all the values in the formula

$34.8 = \frac{27600\times 100}{Total\ value}$

$Total\ value = \frac{2760000}{34.8}$

Total value = 79310 (Approx)

Therefore the total number of employees are 79310 .

7 0

2 years ago

There are 5 different coloured cups in a row.

Marizza181 [45]

There are 12 possible arrangements.

------------------------

Considering that the blue cup has to be on one end, we consider the number of arrangements possible with the other 4 cups, then multiply by 2(considering the blue on each end).

------------------------

Considering green and yellow before red and purple, there are $2 \times 2 = 4$ outcomes(G-Y-R-P, G-Y-P-R, Y-G-R-P and Y-G-P-R).
Another two possible outcomes are yellow-purple and green-red, or vice-versa, thus 4 + 2 = 6 outcomes.
To account for the blue on the end, multiplying by 2. $2 \times 6 = 12$
There are 12 possible arrangements.

A similar problem is given at brainly.com/question/24617788

6 0

2 years ago

2 cars c and d started to move to each other car c was 118 miles from Boston car d was 256 miles from Boston car c was going twi

Vadim26 [7]

Answer:

131.3 miles

Step-by-step explanation:

The two cars are moving from different directions. The total distance between the two cars = 118 miles + 256 miles = 374 miles.

Let us assume that the two cars meet at point O, let the distance between car c and O be d₁, the distance between car d and point O be d₂, hence:

d₁ + d₂ = 374 miles (1)

Let speed of car d be x mph, therefore speed of car c = 2x mph (twice of car d). If it take the cars t hours to meet at the same point, hence

For car c:

2x = d₁/t

t = d₁ / 2x

For car d;

x = d₂/t

t = d₂/ x

Since it takes both cars the same time to meet at the same point, therefore:

d₁/2x = d₂ / x

d₁ = 2d₂

d₁ - 2d₂ = 0 (2)

Solving equation 1 and 2 simultaneously gives d₁ = 249.3 miles, d₂ = 124.7 miles

Therefore the distance from point of meet to Boston = 249.3 - 118 = 131.3 miles

7 0

2 years ago

The equation y = 36 + 18x models the relationship

wariber [46]

Answer:

Option B) The height, in inches, of a typical apple tree

Step-by-step explanation:

Let

x----> the number of years, after the tree was planted

y ---> the height in inches, of a typical golden delicious apple tree

we have

$y=36+18x$

Remember that

The y-intercept is the value of y when the value of x is equal to zero

In this problem

The y-intercept is the height of the tree when it was planted (x=0)

8 0

3 years ago

Aiden spins the spinner shown 20 times. His results are shown in the table. What are the experimental and theoretical probabilit

harkovskaia [24]

Answer:D

Step-by-step explanation:

5 0

3 years ago