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2 years ago

Please help!!

Mathematics

1 answer:

Kamila [148]2 years ago

4 0

The relationship between the trigonometric ratios are cos(X) = cos(A), cos(Y) = cos(C) and cos(Z) = cos(B)

<h3>The relationship between the trigonometric ratios</h3>

The given parameters are:

Scale factor of dilation, k = 2
cos(X) = 2.5/5/59

Since the transformation is a dilation, it means that both triangles are similar.

So, we have:

cos(X) = cos(A), cos(Y) = cos(C) and cos(Z) = cos(B)

<h3>The segments AC and AB. </h3>

In (a), we have:

Both triangles are similar.

This means that the corresponding points are:

X and A

Y and C

Z and B

So, we have:

AC = 2 * XY

AB = 2 * XZ

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The sum of two numbers is 47 and the difference is 3 . What are the numbers?

Galina-37 [17]

X + y = 47
x - y = 3
--------------add
2x = 50
x = 50/2
x = 25

x + y = 47
25 + y = 47
y = 47 - 25
y = 22

ur numbers are 22 and 25

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3 years ago

Write the ratio as a fraction in simplest form. 16 yr : 28 yr (PICTURE) (PLZ HELP)

nataly862011 [7]

Answer:

2/7

Step-by-step explanation:

16yr:28yr simplified is:

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3 years ago

The waiting times on hold for a call to a customer service department are observed to have the following probability distributio

Elina [12.6K]

Answer:

b. 9.2 minutes

Step-by-step explanation:

To find the expected waiting time for a random call from the sampie given by using the formula:

$\sum (f(X)) = \dfrac{\sum f (x) \times x}{\sum x}$

number of calls (x) waiting time f(x) in minutes f(x) *(x)

0 0 0

2 3 6

4 10 40

6 15 90

8 10 80

10 6 60

$\sum x = 30$ $\sum f(x) *x = 276$

Therefore:

$\sum (f(X)) = \dfrac{276}{30}$

$\sum (f(X)) = 9.2$

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3 years ago

Mariah's earnings rate can be described in dollars per hour or hours per dollar. Mariah earns $10 for each hour she works at a m

weeeeeb [17]

Answer:

<u>dollars per hour rate = $10</u>

<u>hours per dollar = 6 minutes 15 seconds</u>

Step-by-step explanation:

Take note that one is singular (dollar) without an 's', and the other is plural (dollars). Thus, since her dollars per hour rate tells us how much she will earn for each hour of work, we would expect her hours per dollar rate to tell us how much she has to work in minutes to earn a single dollar ($1).

If we divide $\frac{10}{60 minutes}$ = $0.16 which indicates how much she earns for every minute she works at the theater. Further dividing this value into 1 minute we find the hour per dollar rate 1/0.16 = 6.25. minutes.

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3 years ago

Evaluate 3|-4|<br> 2<br> -2<br> 1

Romashka [77]

Answer: 12

Step-by-step explanation: 3 times 4=12

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3 years ago