What is the domain of y =
cos-1^x?

Answer:

(-√3/2., -1/2)

Step-by-step explanation:

This is a reflection in the line y = -x.

So x =  1/2 becomes y = -1/2

and y = √3/2  becomes x = -√3/2.

5/7 is 5÷7

so

5÷7 = 0.7142857143

Answer: 25 kilometers for part A. 12 for part B.

Step-by-step explanation: Teacher told the answer.

Answer: The radius would be twelve

Step-by-step explanation:

The radius of a sphere would be 12 cm. By putting the value of volume we can find the radius of the sphere. The radius of a sphere would be 12 cm.

Answer:u can advance or pray u god u ain’t getting whipped

Step-by-step explanation:

Answer: 144

Step-by-step explanation:

The binomial is  [tex]\left( 4x+3y\right)^3[/tex]

The expansion of [tex]\Rightarrow \left ( a+b \right )^n=^nC_0\left ( a \right )^n\left ( b \right )^0+^nC_1\left ( a \right )^{n-1}\left ( b \right )^1+^nC_2\left ( a \right )^{n-2}\left ( b \right )^2+^nC_3\left ( a \right )^{n-3}\left ( b \right )^3+\ldots[/tex]

Expansion of [tex]\left( 4x+3y\right)^3[/tex]

[tex]\Rightarrow ^3C_0\left ( 4x\right )^{3}\left ( 3y\right )^0+^3C_1\left ( 4x\right )^{2}\left ( 3y\right )^1+^3C_2\left ( 4x\right )^{1}\left ( 3y\right )^2+^3C_3\left ( 4x\right )^{0}\left ( 3y\right )^3[/tex]

So, the second term is

[tex]\Rightarrow ^3C_1\left ( 4x\right )^{3-1}\left ( 3y\right )^1\\\Rightarrow ^3C_1\left ( 4x\right )^{2}\left ( 3y\right )^1[/tex]

Its Coefficient is

[tex]\Rightarrow ^3C_1\times 4^2\times 3\\\Rightarrow 3\times 16\times 3=144[/tex]

Answer:

C, 85°

Step-by-step explanation:

180° = total angles for a triangle

First, add the known angles.

67 + 28 = 95

Then, subtract

180 - 95 = 85

To check your answer, add all the angles up to see if it equals 180°

67 + 28 + 85 = 180

Have a great day!

Answer:

I'm sorry I don't know ‍♀️

Answer:

b

Step-by-step explanation:

Answer:

[tex]yes (k) = \frac{1}{9}[/tex]

Answer:

huh? explain better

Step-by-step explanation:

The length of arc PR to the nearest hundredth is 7.15 units

The formula for calculating the length of an arc is expressed as:

L = r theta

Given the following parameters

r = PQ = 5 units

theta = <PQR = 82π/180 rad

Substitute to have:

L = 5 * 82π/180 rad

L = 7.15 units

Hence the length of arc PR to the nearest hundredth is 7.15 units

Learn more on length of an arc here; https://brainly.com/question/2005046

Answer: The answer is 7.16.

Answer:

100°

Step-by-step explanation:

is 25% of the circle

Answer:

BC = 100°

Step-by-step explanation:

The chord- chord angle BDC is half the sum of the arcs intercepted by the angle and its vertical angle, that is

[tex]\frac{1}{2}[/tex] ( BC + AE) = 85° ( multiply both sides by 2 to clear the fraction )

BC + AE = 170°

BC + 70° = 170° ( subtract 70° from both sides )

BC = 100°

Step-by-step explanation:

C.P=5×1=Rs.5

S.P.=4×1=Rs.4

Loss=C.P.=S.P.

=Rs.5-Rs.4

=Re.1

loss%=loss/C.P ×100

=1/5×100%

=20%

Answer:

Step-by-step explanation:

You have the right answer

========================================================

Work Shown:

p = number of items sold

855 = cost per item

855p = total revenue = total amount of money earned

6780 = total expenses

profit = revenue - expenses = 855p - 6780

profit = 855p - 6780

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

Now plug in p = 250

profit = 855p - 6780

profit = 855*250 - 6780

profit = 213,750 - 6,780

profit = 206,970 dollars

This is the profit the company makes in one month if p = 250 items are sold.

The CEO earns 15% of this profit, so,

15% of 206,970 = 0.15*(206,970) = 31,045.50

The CEO earns $31,045.50

Answer:

the answer is d

Step-by-step explanation:

brainliest pls

Answer:

It's B or D, but I think D.

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

I don't know how to explain this other than use a calculator.

Hope that this helps!

Answer:

5.5

hope this helps

have a good day :)

Step-by-step explanation:

Answer:

1 : 15

2: 12

3: 52

4: 27.3

Step-by-step explanation:

For #1:

if line m and n are perpendicular then they will create right angles

Right angles have a measure of 90 degrees

That being said we can find the measure of the missing angle by subtracting the measure of the known angle (75) from 90

so k = 90 - 75

90 - 75 = 15

Hence k = 15.

For #3 ( very similar to #1, only difference is the values of the angles )

so R = 90 - 38

90 - 38 = 52

Hence, R = 52

For #2 and #4

Complementary angles have a sum of 90°

So like the previous questions we can find the measure of the missing angle by subtract the measure of the given angle from 90

∠V = 90 - 78

90 - 78 = 12

Hence ∠V = 12

∠Y = 90 - 62.7

90 - 62.7 = 27.3

Hence ∠Y = 27.3

Answer:

non proportional

Step-by-step explanation:

From the table;

0 = 0

25 = 5^2

100 = 10^2

Since the y values are the output and x is the input, hence;

y = x²

Since the equation is quadratic, hence the table is non proportional

Answer:

X = 7

Step-by-step explanation:

if y is one and and x is getting subtracted by 8 what’s 8 minus 1

Answer:

2642.5

Step-by-step explanation:

I'm like 10% sure that's the right answer so I wouldn't put it down on the work if I were you

Answer:

≈2736 mg

Step-by-step explanation:

0.98% = .0098

p = 3500(1 -0.0098)^25

p = 3500(0.9902)^25

p ≈ 2736

Answer:

2/3

Step-by-step explanation:

[tex]p( \frac{2}{6} + \frac{2}{6} ) \\ p = \frac{4}{6} \\ = \frac{2}{3} [/tex]

Answer:

I agree with Noah's Method because following PEMDAS you have to do exponents first. 10^3 is 1000 and then you can add the 20. Jada's method is incorrect because you cannot add the two together.

Complete question :

A random sample of Maxwell High School students showed that 7 out of every 12 students ride the bus to school . Maxwell High School has a total of 840 students . Based on the sample , how many students most likely ride the bus to school ?

Answer:

490 students

Step-by-step explanation:

Proportion of students who rode bus to school :

7 / 12 = 0.5833333

Given a sample size of 840 students ;

The likely Number of students who rode bus to school will be :

Sample size * proportion

840 * 0.5833333

= 490 students

Answer: 3

Step-by-step explanation:

The number of getting the black hair color clients will be 4.

Probability is defined as the ratio of the number of favorable outcomes to the total number of outcomes in other words the probability is the number that shows the happening of the event.

Probability = Number of favorable outcomes / Number of samples

Given the of the clients who had their hair cut at Tanner's salon last month, 4 clients had black hair and 12 clients had hair in other colors.

The probability is:-

P = 4 / 12

The number of clients having black color hair is calculated as:-

Number = ( 4 / 12 ) x 12

Number =  4

Therefore, there will be 4 people getting black hair colors.

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