12. If AC=4 and CD=4 13 in the figure below, what is cos x? B 45 45° А Xº D A. 2 13 B. 3 12 C. 2 13 D. 2 E. 1 4 C С 4-13​

12. If AC=4 And CD=4 13 In The Figure Below, What Is Cos X? B 45 45 X D A. 2 13 B. 3 12 C. 2 13 D. 2

Answers

Answer 1

Answer:

c

Step-by-step explanation:


Related Questions

find the unknown side of the right triangle using the information given leg=12m, leg=6 m​

Answers

Answer:

Step-by-step explanation:

Given

Leg =  10

Leg = 6

hypotenuse = ?

equation

c^2 = a^2 + b^2

a = 10

b = 6

Solution

c^2 = 10^2 + 6^2                  Expand

c^2 = 100 + 36                     Combine

c^2 = 136                              Take the square root of both sides

√c^2 = √136

c = 11.66

answer

hypotenuse = 11.66

If m 3 = 80°, find m 7. Type a numerical answer in the space provided. Do not type degree symbols or spaces in your answer.

Answers

The value of m∠7, given the data from the question is 80°

Alternate angle theorem

Alternate angle theorem states as follow:

When two parallel lines are cut by a line (i.e transversal), then the alternate interior angles or alternate exterior angles are aqual.

How to determine the value of m∠7

From the diagram,

Line l and line m are parallel linesm∠3 and m∠7 are alternate anglesm∠3 = 80°m∠7 =?

From the above, we can see that m∠3 and m∠7 are alternate angles.

Therefore,

m∠7 = m∠3

m∠7 = 80°

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Complete question

please see attached photo

a study of nickels showed that the standard deviation of the weight of nickels is 300 milligrams. A coin counter manufacture wishes to find the 90% confidence interval for the average weight of a nickel. What is the minimum number of nickels he needs to weigh to obtain an average accurate to within 20 milligrams?

Answers

Using the z-distribution, a sample of 609 nickels has to be weighed.

What is a z-distribution confidence interval?

The confidence interval is:

[tex]\overline{x} \pm z\frac{\sigma}{\sqrt{n}}[/tex]

The margin of error is:

[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]

In which:

[tex]\overline{x}[/tex] is the sample mean.z is the critical value.n is the sample size.[tex]\sigma[/tex] is the standard deviation for the population.

For this problem, the parameters are:

[tex]M = 20, \sigma = 300, z = 1.645[/tex]

We solve for n to find the sample size, then:

[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]

[tex]20 = 1.645\frac{300}{\sqrt{n}}[/tex]

[tex]20\sqrt{n} = 1.645 \times 300[/tex]

[tex]\sqrt{n} = 1.645 \times 15[/tex]

[tex](\sqrt{n})^2 = (1.645 \times 15)^2[/tex]

n = 608.9

Rounding up, a sample of 609 nickels has to be weighed.

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The number 27 is ___?
-prime
-composite

Answers

Answer:

the number 27 is a composite

Step-by-step explanation:

Yes, since 27 has more than two factors . 1, 3, 9, 27. In other words, 27 is a composite number because 27 has more than 2 factors

Answer:

The number 27 is composite.

Multiply 3.4x and 1.2x.

4.08x2
4.6x2
4.08x
4.6x

Answers

Answer: 4.08x2

Step-by-step explanation:

Answer:

4.08x2

Step-by-step explanation:

If you apply the changes below to the exponential parent function f(x)=2^x, what is the equation of the new function? Shifts five units to the right, Shifts seven units down

Answers

the equation of the new function is:

[tex]g(x) = 2^{x - 5} - 7[/tex]

What is the equation of the new function?

We have a function:

[tex]f(x) = 2^x[/tex]

And we want to shift it five units to the right, and seven units down, then the new function will be:

[tex]g(x) = f(x - 5) - 7[/tex]

If we now replace f(x), we get:

[tex]g(x) = 2^{x - 5} - 7[/tex]

That is the equation of the new function.

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Last year, Kevin had 20,000 to invest. He invested some of it in an account that paid 6% simple interest per year, and he invested the rest in an account that paid 10% simple interest per year. After one year, he received a total of $1480 in interest. How much did he invest in each account?

Answers

$13,000 was invested at 6% whereas $7,000 was invested at 10% using simple interest approach

What is simple interest?

Simple interest is determined as the amount invested multiplied by the interest rate and the number of years that investment lasts.

I=PRT

I=interest

P=principal

R=rate of return

T=time

Let X be the amount invested at 6%

I at 6%=6%*X*1

I=0.06X

The amount invested at 10% is 20,000-X

total interest=0.06X+0.10*(20000-X)

total interest=1,480

1480=0.06X+0.10*(20000-X)

1480=0.06X+2000-0.10X

1480-2000=0.06X-0.10X

-520=-0.04X

X=-520/-0.04

X=13,000

13,000 was invested at 6%

amount invested at 10%=20,000-X

amount invested at 10%=20,000-13,000

amount invested at 10%=7,000

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cual es el vaolor de t-19=1

Answers

Answer:

t=20

Step-by-step explanation:

t-19=1

t-19(+19)=1+19

t=20

find value of t:
t - 19 = 1

t = 20

how do I type in greater than in my computer

Answers

Answer:

hold shift then press the lil right  arrow next to the question mark

Step-by-step explanation:

Answer:

shift  +  >

Step-by-step explanation:

Hope this helps

A pattern has 2 blue triangles to every 10 yellow triangles. What is the ratio of blue triangles to all triangles?

Answers

Answer:

2 : 12

Step-by-step explanation:

There are 2 blue triangles, so 2 will come first. It's then followed by the sum of blue and yellow, which is 2 + 10, which is 12. So, the ratio is 2 : 12.

Brainliest, please :)

Write an interval using interval notation to describe the set of values shown above.

Answers

Answer:

(-4,3)

Step-by-step explanation:

The intervals are denoted as:

Closed intervals = [a, b]

This interval includes a and b.

Open intervals = (a, b)

This interval does not include a and b.

The interval that denotes the values between -4 and 3 on the given number line is [-4, 3].

What are intervals?

The intervals are numbers or values between two given point

The intervals are denoted as:

Closed intervals = [a, b]

This interval includes a and b.

Open intervals = (a, b)

This interval does not include a and b.

We have,

A number line.

The set of values that is in the blue line is from -4 to 3.

This means that the blue line includes values from -4 to 3.

There are infinite numbers between -4 to 3.

The blue line denoted that the values -4 and 3 are also included.

The interval that denotes the values between -4 and 3 is:

= [-4, 3]

Thus,

The interval that denotes the values between -4 and 3 on the given number line is [-4, 3].

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Find the volume of the composite figure. Round to the nearest tenth. 3cm 4cm 10cm 5 cm

Answers

The volume of the composite figure is 655.44 unit³.

How to illustrate the volume?

The information is incomplete. An overview will be given. Let's assume that the shape is a cylinder.

The volume of a cylinder is πr²h

Assumed radius = 7

Assumed height = 4

The volume will be:

= πr²h

= 3.14 × 7² × 4

= 615.44 unit³

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? Question
Warm-Up
Given: AB || CD
m/ZYB = 60°
Prove: m/DXW = 120°
A
W
Z
Y/60°
X
Select the correct answer from each drop-down menu.
Statements
AB || CD
m/ZYB
ZYXDand ZDXWform a linear pair.
K
B
=
60°
m/YXD
m/DXW = 120°
Reasons
given
given
definition of a linear pair
corresponding angles have equal measures

Answers

The missing Statement and reason for the transverse line angles is; m∠YXD = 60° and  Supplementary angles sum up to 180°.

How to prove congruent angles?

Statement 1; AB ║ CD

Reason 1; Given

Statement 2; m∠ZYB = 60°

Reason 2; Given

Statement 3; ∠YXD and ∠DXW form a linear pair

Reason 3; Definition of Linear Pair

Statement 4; m∠YXD = 60°

Reason 4; Corresponding angles have equal measure.

Statement 5; m∠DXW = 120°

Linear pairs usually sum up to 180° because they are supplementary angles. Thus;

m∠YXD = 180° - 60° = 120°

Reason 5; Supplementary angles sum up to 180°.

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What is the value of c in the equation below?
22²=a=c

Answers

Answer:

484

Step-by-step explanation:

because a=22² , which is equal to 484

because a=22² , which is equal to 484, but a=c hence C is equal to 484

Write an equation in standard form of the line passing through the points (3, 5) and (8, 15)

Answers

hi,

a point is given  ( x; y)

standar line equation is  :  y = ax+b

So  with  (3;5)  and  (8;15)  we have  :  

   3a+b = 5

   8a+b = 15

so :  

8a+b - ( 3a +b) =  15 -5

8a +b -3a -b = 10

8a-3a = 10

5a = 10

   a = 10/5

    a = 2

if a = 2  so  3*2 +b = 5

                     6+b = 5

                       b = 5-6

                       b = -1

so let check :  

8*2 + (-1) = 16 -1 = 15

and  3*2 -1 = 6-1 = 5

coordonnate works for both point, so line  is   y = 2x -1

On Sunday, a local hamburger shop sold a combined total of 320 hamburgers and cheeseburgers. The number of cheeseburgers sold was three times the number of hamburgers sold. How many hamburgers were sold on Sunday?

Answers

Answer:

80

Step-by-step explanation:

1) if the number of hamburgers is 'h', number of cheesburgers is 'c', then

2) the condition 'The number of cheeseburgers sold was three times the number of hamburgers' can be written as c=3h. Also

3) the condition 'combined total of 320' can be written as h+c=320, then

4) it is possible to make up the system of equations:

[tex]\left \{ {{c=3h} \atop {c+h=320}} \right. \ = > \ \left \{ {{c=240} \atop {h=80}} \right.[/tex]

5) finally, number of hamburgers is 80.

On which intervals is the function increasing? Choose
all that apply.

Answers

The function is increasing on the intervals:

(-∞, 3] and [5, ∞)

Then the correct options are a and c.

On which intervals is the function increasing?

The function is increasing when, reading from left to right, we can see that the curve goes upwards.

By looking at the graph, we can see that the function increases between -∞ and 3, and also increases between 5 and ∞, then the correct options are a and c-

(-∞, 3] and [5, ∞)

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CORRECT ANSWER PLEASE!!!!! 150 points

Answers

Answer: -7

Step-by-step explanation:

First, lets use the functions to find the answer to f(-8) and g(4)

f(-8) is the same as asking for the value of y when x is -8

Therefore, f(-8) = -5 (according to the graph)

Using the same rule, g(4) would be the value of y when x = 4 which,

according to the graph, g(4) = 3

Plug these values back into the original equation to get:

[tex]-1*f(-8)-4*g(4)=?\\=-1*-5-4*3\\[/tex]

using the order of operations, we will multiply the values first

[tex](-1*-5)+(-4*3)\\=5+(-12)\\=5-12\\=-7[/tex]

Therefore, our final answer is -7

Answer:

-7

Step-by-step explanation:

What is the values of x?

Answers

Answer:

x = 34

Step-by-step explanation:

complementary angle sum to 90°

sum the 2 angles and equate to 90

x + x + 22 = 90

2x + 22 = 90 ( subtract 22 from both sides )

2x = 68 ( divide both sides by 2 )

x = 34

Which figure is described below?
The locus of points in a plane 1 unit from the point (0,0).
ray
circle
plane
line

Answers

Answer:

CIRCLE

Step-by-step explanation:

Find the slope of the line passing through the points (6, 4) and (6, -3).

Answers

Answer:

undefined

Step-by-step explanation:

slope = (y_2 - y_1)/(x_2  x_1)

slope = (-3 - 4)/(6 - 6)

slope = -7/0

Since division by zero is undefined, this line has undefined slope.

A person mixed 80l milk with 2% fat and 40l milk together. If the fat amount in the whole mixture is 3%, what is the fat percentage in the second type of milk?​

Answers

The fat percentage in the second type(40 liters) of milk is 1%

Percentage

fats in 80 liters milk = 2% fat40 liters = x % fatTotal fat = 3%

Fats in 40 liters of milk = Total fat - fats in 80 litrrs milk

= 3% - 2%

= 1%

Therefore, the fat percentage in the second type of milk is 1%

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I'll give 5 stars, brainliest and whatever you ask if you complete this question.

Answers

The list of data points used to generate the histogram is

   x            Frequency

15-20              0

20-25             4

25-30              6

30-35              3

35-40              4

40-45              0

45-50              3

Histogram data points

From the question, we are to write the list of data points used to generate the given histogram

The list of data points used to generate the histogram is

   x            Frequency

15-20              0

20-25             4

25-30              6

30-35              3

35-40              4

40-45              0

45-50              3

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how to find the common factors and H.C.F of 20, 35, and 40​

Answers

The factors of 20 are 1, 2, 4, 5, 10, 20

The factors of 30 are 1, 2, 3, 5, 6, 10, 15, 30

The factors of 45 are 1, 3, 5, 9, 15, 45

Hence the common factors are only 1 and 5.

The highest common factors in this case is only 5.

Hope this helps : )

he instructions to find the LCM of 20, 35 and 40 are the next:

1. Decompose all numbers into prime factors

20 2 10 2 5 5 1

35 5 7 7 1  

40 2 20 2 10 2 5 5 1  

2. Write all numbers as the product of its prime factors

Prime factors of 20 = 22 . 5

Prime factors of 35 = 5 . 7

Prime factors of 40 = 23 . 5

3. Choose the common and uncommon prime factors with the greatest exponent

Common prime factors: 5

Common prime factors with the greatest exponent: 51

Uncommon prime factors: 2 , 7

Uncommon prime factors with the greatest exponent: 23, 71

4. Calculate the Least Common Multiple or LCM

Remember, to find the LCM of several numbers you must multiply the common and uncommon prime factors with the greatest exponent of those numbers.

LCM = 51. 23. 71 = 280

a bag contains 15 counters:7 red 4 blue and 4 green.a counter is taken out of the bag at random.what is the probability of choosing the following: a red or blue counter.

Answers

[tex]|\Omega|=15\\|A|=7+4=11\\\\P(A)=\dfrac{11}{15}\approx73.3\%[/tex]

Answer:

RED COUNTER: 7/15

BLUE COUNTER: 4/15

Hope it helps,

for further explanation do contact me

Five times a number decreased by nine is equal to twice the number increased by 23. Which equation could be used to solve the problem?​

Answers

Answer:

The equation is 5x - 9 = 2x + 23.

The answer is option A.

Step-by-step explanation:

The isosceles trapezoid is part of an isosceles triangle with a 34° vertex angle. What is the measure of an acute base angle of the trapezoid? Of an obtuse base angle? The diagram is not drawn to scale.

Answers

The isosceles trapezoid is part of an isosceles triangle with a 34 degree vertex angle. The measure of an acute base angle of the trapezoid is 73 degrees.

The diameter of a pipe is normally distributed, with a mean of 0.8 inch and a variance of 0.0004. What is the probability that the diameter of a randomly selected pipe will exceed 0.84 inch? (You may need to use the standard normal distribution table. Round your answer to three decimal places.) . Hint: take the square root of the variance to find the standard deviation.

Answers

The probability that the diameter of a randomly selected pipe will exceed 0.84 inch is 0.977

What is probability?

Probabilities are used to determine the chances, likelihood, possibilities of an event or collection of events

How to determine the probability?

The given parameters are:

Mean = 0.8

Variance = 0.0004

Calculate Standard deviation using

σ = √σ²

This gives

σ = √0.0004

Evaluate

σ = 0.2

Calculate the z-score at x = 0.84 using

z = (x - [tex]\bar x[/tex])/σ = √σ²

This gives

z = (0.84 - 0.8)/0.02

Evaluate

z = 2

The probability is then represented as:

P(x > 0.84) = P(z > 2)

Next, we look up the value of the z table of probabilities

From the z table of probabilities, we have:

P(x > 0.84) = 0.977

Hence, the probability that the diameter of a randomly selected pipe will exceed 0.84 inch is 0.977

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The intensity (1) of a light source is inversely proportional to the square of the distance (d) from the source. If the intensity is 16 lumens at a distance of 16 feet, what is the intensity at a distance of 14 feet? Round to the nearest hundredth.​

Answers

The intensity at a distance of 14 feet is 18.29 ft

How to find the intensity of light?

The intensity (I) of a light source is inversely proportional to the square of the distance (d) from the source.

Light intensity refers to the strength or amount of light produced by a specific lamp source

The light intensity is measured in terms of lumens per square foot or lumens per square meter.

Therefore,

I ∝ 1 / d²

Hence,

I = k / d²

where

I = intensity of lightd = distance form the source

Therefore,

k = Id²

k = 16 × 16

k = 256

Hence,

I = 256 / 14

I = 18.2857142857

I = 18.29 ft

Therefore, the intensity at a distance of 14 feet is 18.29 ft

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Total Assets
Sales
Task 3: Preparing a Cash Flow Statement
Nikea Inc.'s income statement for the year 2013 is shown below:
During the year, the balances for the sales account, cost of goods sold, and gross profit
increased. This information is provided to you. Prepare the cash flow for operating activities,
using both the direct method and the indirect method.
Accounts
Nikea's income statement for the year 2013 is shown below.
Cost of Goods Sold
Gross Profit
Operating Expenses
Deprecation
Styles
Net Income
934,000 Total Liability & Stockholders Equity
Type your response here:
Amount ($)
600,000
14
(400,000)
200,000
(30,000)
(20,000)
150,000
934,000
4
Editin

Answers

The preparation of the Cash Flow Statement for Nikea Inc. for the year ended December 31, 2013, is as follows:

Direct Method:

Nikea Inc.

Cash Flow Statement

Cash received from customers  $600,000

Cash paid to suppliers of goods (400,000)

Cash paid to vendors of servides (30,000)

Cash from operating activities    $170,000

Indirect Method:

Nikea Inc.

Cash Flow Statement

For the year ended December 31, 2013

Net income                                $150,000

Add non-cash expenses:

Depreciation                                 20,000

Cash from operating activities $170,000

What is the difference between the direct method and the indirect method of Cash Flow Statement?

The direct method of preparing the Cash Flow Statement starts with the operating income and adds the non-cash expenses to obtain the cash flow from operating activities.

On the other hand, the indirect method reconciles the accounts receivable and payable to extract the exact cash flows received from customers or paid to suppliers of goods and services.

Both methods of determining the cash flow from operating activities yield the same result.

Data and Calculations:

Nikea’s income statement for the year 2013

Sales                          $600,000

Cost of Goods Sold   (400,000)

Gross Profit                 200,000

Operating Expenses   (30,000)

Deprecation                (20,000)

Net Income                 150,000

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