please help thank you

15/17. The value (ratio) of cos A is 15/17.

The trigonometric ratios of an acute angle are, basically, the sine, the cosine and the tangent. They are defined from an acute angle, α, of a right triangle, whose elements are the hypotenuse, the leg contiguous to the angle,  and the leg opposite the angle.

-The sine of the angle is the opposite leg divided by the hypotenuse.

-The cosine of the angle is the adjacent leg divided by the hypotenuse.

-The tangent of the angle is the opposite leg divided by the adjacent leg or, which is the same, the sine of the angle divided by the cosine of the angle.

cos A = adjacent leg/hypothenuse = BC/AC = 15/17

Answer:

N/A

Step-by-step explanation:

Not enough context is given for the problem.

Just remember, though:

And = Multiplication

Or = Addition

1/8 chance for each section

Answer:

(A) P(gray), P(green)

Step-by-step explanation:

Notice that there are 2 tiles in each, so it should be A as the answer.

Please mark me brainiest!

Hope you have a good day!

f(x)=3x^2-18x+10

a = 3, b = -18 and c = 10

The vertex of a parabola is in form a(x+d)^2 + e

d = b/2a = -18/2(3) = -18/6 = -3

e = c-b^2/4a = 10 - -18^2/4(3) = 10-27 = -17

Now the vertex form of the parabola becomes 3(x-3)^2 -17

Use the vertex form of the parabola in the vertex form of y = a(x-h)^2 +k

Where a = 3, h = -3 and k = -17

Now you have y = 3(x-(-3))^2 +(-17)

Simplify: y = 3(x+3)^2 -17

The vertex becomes the h and k values of (3,-17)

Step-by-step explanation:

Having proven that the triangles are similar, we can write the proportion:

AP / CP = CP / MP

9 / CP = CP / 16

CP² = 144

CP = 12

Now, we can simply use Pythagorean theorem to find the other sides.

AC² = AP² + CP²

AC² = 9² + 12²

AC = 15

CM² = CP² + PM²

CM² = 12² + 16²

CM = 20

Answer:

an inequality

Step-by-step explanation:

An inequality is the relation between two expressions that are not equal.  The symbols generally used are less than (<) or greater than (>), as in:

4 > 3 or 4 < 9

That means that each side of the symbol represents a value that  is different from the other side.  The relationship is described with the sign to indicate which side has a greater value.

If both sides have an equal value, then it's an equation.

There are 126 slices of sausage pizza sold

Answer:

  D.  (x + 7, y - 2)

Step-by-step explanation:

To get back the original after translating left 7 and up 2, you must translate right 7 and down 2. The transformation of choice D does that.

Answer:

Either x = 2 or y = 6, depending on the original line

Step-by-step explanation:

So, if the original line is horizontal, our new line is vertical, and all vertical lines in a graph is x = some number. To pass through the point (2, 6), x has to equal 2, since the point's x-coordinate is 2.

On the other hand, if the original line is vertical, our new line is horizontal, which is y = some number. Our point's y-coordinate is 6, so our line should be that y = 6.

It's A, x=2. I hope i helped!!

1)when we know x+y=90* the sine of x is equal to cosine of y , so the solution of the first is 0.6 again!

Answer:

Left diagram cos(y) = 0.6

Right diagram x = 5 makes the equation true.

Step-by-step explanation:

Left diagram

Both the sin(x) and the Cos(y) use the same side as the non hypotenuse side.

Therefore they most be equal.

So if sin(x) = 0.6, then cos(y) = 0.6

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

Right diagram

You can factor this to get the answer.

From the first 2 terms, take out x^2. From terms 3 and 4 take out 2.

x^2(x - 5) + 2(x - 5) = 0

Take out the common factor of (x - 5)

(x^2 +2)(x - 5)

x^2 + 2 yields a complex answer (which doesn't matter for this question)

x - 5 = 0

x = 5

[tex]\bf \textit{Product to Sum Identities} \\\\sin(\alpha)cos(\beta)=\cfrac{1}{2}[sin(\alpha+\beta)\quad +\quad sin(\alpha-\beta)] \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ sin(5\theta )cos(2\theta )\implies \cfrac{1}{2}[sin(5\theta +2\theta )+sin(5\theta -2\theta )]\implies \cfrac{sin(7\theta )+sin(3\theta )}{2}[/tex]

The required value of trigonometry expression is the product as a sum [sin(7θ) + sin(3θ)] / 2.

The product-to-sum formulae are used to represent the sum of the sine and cosine functions. These are generated from trigonometry's sum and difference formulae.

sin A cos B = (1/2) [ sin (A + B) + sin (A - B) ]

The trigonometry expression is given in the question

sin (5θ) cos (2θ)

According to  the product to sum Identities

sin A cos B = (1/2) [ sin (A + B) + sin (A - B) ]

Here A = 5θ and B = 2θ

sin (5θ) cos (2θ) = (1/2) [sin(5θ + 2θ) + sin(5θ - 2θ)]

sin (5θ) cos (2θ) = (1/2) [sin(7θ) + sin(3θ)]

sin (5θ) cos (2θ) =  [sin(7θ) + sin(3θ)] / 2

Thus, the required value of trigonometry expression is the product as a sum [sin(7θ) + sin(3θ)] / 2.

Learn more about Trigonometric functions here:

brainly.com/question/6904750

#SPJ2

Answer:

  72

Step-by-step explanation:

Exhaustive search shows the numbers to be 12, 24, 36. The sum of these three numbers is 72.

Answer:

  (x +8)² +(y +1)² = 9

Step-by-step explanation:

The formula for a circle with center (h, k) and radius r is ...

  (x -h)² +(y -k)² = r²

Filling in your given numbers gives ...

  (x -(-8))² +(y -(-1))² = 3²

Simplifying that results in ...

  (x +8)² +(y +1)² = 9

I think the answer is six

(1,1) , (2,2) , (3,3) , (4,4) , (5,5) , (6,6)

Answer:

Part 1) The measure of the angle is 47°

Part 2) The measure of the angle is 52°

Step-by-step explanation:

Part 1)

we know that

The inscribed angle is half that of the arc it comprises.

we have that

(12y-1)°=(9y+11)° ----> because the arc that the inscribed angles comprise is the same

Solve for y

12y-9y=11+1

3y=12

y=4°

Find the measure of the angle

(12y-1)°=12(4)-1=47°

Part 2)

we know that

The inscribed angle is half that of the arc it comprises.

we have that

2(3m+2)°=(4m+20)° ----> because the arc that the inscribed angles comprise is the same

Solve for m

6m+4=4m+20

6m-4m=20-4

2m=16

m=8

Find the measure of the angle

(4m+20)°=4(8)+20=52°

Answer:

The measures of angles of triangle EFQ are

1) [tex]m\angle EFQ=100\°[/tex]

2) [tex]m\angle FEQ=66\°[/tex]

3) [tex]m\angle EQF=14\°[/tex]

Step-by-step explanation:

step 1

Find the measure of arc QD

we know that

The inscribed angle is half that of the arc it comprises.

[tex]m\angle DFQ=\frac{1}{2}(arc\ QD)[/tex]

substitute the given value

[tex]10\°=\frac{1}{2}(arc\ QD)[/tex]

[tex]20\°=(arc\ QD)[/tex]

[tex]arc\ QD=20\°[/tex]

step 2

Find the measure of arc FQ

we know that

[tex]arc\ QD+arc\ FQ+arc\ EF=180\°[/tex] ---> because ED is a diameter (the diameter divide the circle into two equal parts)

substitute the given values

[tex]20\°+arc\ FQ+28\°=180\°[/tex]

[tex]arc\ FQ=180\°-48\°=132\°[/tex]

step 3

Find the measure of angle EFQ

we know that

The inscribed angle is half that of the arc it comprises.

[tex]m\angle EFQ=\frac{1}{2}(arc\ QD+arc\ ED)[/tex]

substitute the given value

[tex]m\angle EFQ=\frac{1}{2}(20\°+180\°)=100\°[/tex]

step 4

Find the measure of angle FEQ

we know that

The inscribed angle is half that of the arc it comprises.

[tex]m\angle FEQ=\frac{1}{2}(arc\ FQ)[/tex]

substitute the given value

[tex]m\angle FEQ=\frac{1}{2}(132\°)=66\°[/tex]

step 5

Find the measure of angle EQF

we know that

The inscribed angle is half that of the arc it comprises.

[tex]m\angle EQF=\frac{1}{2}(arc\ EF)[/tex]

substitute the given value

[tex]m\angle EQF=\frac{1}{2}(28\°)=14\°[/tex]

Answer:

Part 2) Option D. yes; k = 1/4 and y = 1/4x

Part 6) Option D. y = 1/5x-1

Part 8) Option C. line b

Part 11) Option D. -1/5

Part 15) Option A. line a

Step-by-step explanation:

Part 2) we know that

A relationship between two variables, x, and y, represent a directly variation if it can be expressed in the form  [tex]y=kx[/tex]

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

In this problem the line passes through the origin

therefore

Yes. y varies directly with x

Let

A(4,1)

The constant k is equal to

[tex]k=y/x[/tex]

substitute

[tex]k=1/4[/tex]

the equation is equal to

[tex]y=(1/4)x[/tex]

Part 6) we know that

The y-intercept of the trend line is -1 (For x=0)

The slope of the trend line is positive

The x-intercept of the trend line is 5 (For y=0)

therefore

the equation is equal to

[tex]y=(1/5)x-1[/tex]

Part 8) we have

[tex]y+4=-\frac{2}{3}x[/tex]

This is the equation of a line into point slope form

The slope is negative [tex]m=-2/3[/tex]

Pass through the point (0,-4) ----> y-intercept

The x-intercept is equal to

[tex]0+4=-\frac{2}{3}x[/tex]

[tex]x=-4*3/2=-6[/tex]

therefore

Is the line b

Part 11)

What is the slope of the line through the points (–2, –1) and (8, –3)?

we know that

The formula to calculate the slope between two points is equal to

[tex]m=\frac{y2-y1}{x2-x1}[/tex]

substitute the values

[tex]m=\frac{-3+1}{8+2}[/tex]

[tex]m=\frac{-2}{10}[/tex]

simplify

[tex]m=-\frac{1}{5}[/tex]

Part 15) we have

[tex]y=3x-2[/tex]

The slope is positive [tex]m=3[/tex]

The y-intercept is -2 (For x=0)

The x-intercept is  (For y=0)

[tex]0=3x-2[/tex]

[tex]3x=2[/tex]

[tex]x=2/3[/tex]

therefore the line is a

Answer:

First option

x = 9.1, AB  = 16.5, CD = 14.1

Step-by-step explanation:

5 * x = 13 * 3.5

5x = 45.5

x = 9.1

AB = 3.5 + 13 = 16.5

CD = 5 + 9.1 = 14.1

The value of x and the length of each chord is x = 9.1, AB  = 16.5, CD = 14.1. Thus first option is correct.

If the considered circle has center O and chord AB, then if there is perpendicular from O to AB at point C, then that point C is bisecting(dividing in two equal parts) the line segment AB.

Or

|AC| = |CB|

Let x be the measure of the length of ED.

[tex]5 \times x = 13 \times3.5\\5x = 45.5\\x = 9.1[/tex]

Therefore,

AB = 3.5 + 13 = 16.5

CD = 5 + 9.1 = 14.1

Learn more about the chord of a circle here:

https://brainly.com/question/27455535

#SPJ2

Answer: Option C

the approximate height of the souvenir of the Eiffel Tower to the nearest tenth is __13 in___.

Step-by-step explanation:

We know that each foot of height of the Eiffel Tower is equivalent to 1/80 inch of height of the souvenir.

The Eiffel Tower is 1,069 feet high.

Then the height of the souvenir the 1,069 times 1/80 in

[tex]h = 1,069 *\frac{1}{80}\\\\h=13.3\ in[/tex]

The answer is the option C

Answer:  6 nickels and 9 dimes

Step-by-step explanation:

15 coins - 3 extra dimes = 12

12 / 2 = 6

6 nickels

6 + 3 = 9 dimes

Answer:

[tex]3,744.45\ m^{2}[/tex]

Step-by-step explanation:

we know that

The area of a sector is equal to

[tex]A=\frac{\theta}{360\°}\pi r^{2}[/tex]

where

[tex]\theta[/tex] ------> is the angle in degrees

r is the radius of the circle

In this problem we have

[tex]r=45\ m[/tex]

[tex]\theta=212\°[/tex]

assume

[tex]\pi =3.14[/tex]

substitute the values

[tex]A=\frac{212\°}{360\°}(3.14)(45)^{2}[/tex]

[tex]A=3,744.45\ m^{2}[/tex]

Answer

[tex]\frac{121}{4} \pi mm^2[/tex]

Explanation

Find the radius

11/2 = 5.5

The formula to find the area of a circle is [tex]\pi r^2[/tex]

[tex]\pi 5.5^2[/tex] = [tex]30.25\pi[/tex]

Convert number into fraction.

[tex]30.25 \rightarrow \frac{121}{4} \pi[/tex]

Area = [tex]\frac{121}{4} \pi mm^2[/tex]

Answer:

30.25π mm²

Step-by-step explanation:

The area (A) of a circle is calculated using the formula

A = πr² ← r is the radius

here diameter = 11 and radius is half of the diameter. thus

r = 5.5

A = π × 5.5² = 30.25π mm²

Answer:

No.

Step-by-step explanation:

The square root of an integer is rational only if that integer is a square number. The closest squares to 8 are 2^2 = 4 and 3^2 = 9. 8 is not a square number, so has an irrational square root.

The square root of 8 is an irrational number.

A square root is a mathematical operation that, when applied to a number, finds a value that, when multiplied by itself, equals the original number. For example, the square root of 25 is 5 because 5 x 5 = 25. It is denoted by the √ symbol. Whether the square root of 8 is a rational number or not can be determined by finding the square root and checking if it can be expressed as a fraction.

The square root of 8 is approximately 2.828, which is an irrational number because it cannot be expressed as a fraction. To further prove that it is irrational, we can use the prime factorization method and show that 8 does not have a perfect square factor.

https://brainly.com/question/428672

Answer:

Step-by-step explanation:

Set up a table for a distance = rate × time problem.  We are considering the trips taken on Monday and Tuesday.

                         d     =     r     ×     t

Monday

Tuesday

Now let's start filling in what we know.  First off, Fran went to her Mother's both days.  Unless her Mother moved overnight from Monday to Tuesday, the distance from Fran to her mom is the same both days, even though we don't know how far it is.  So we will just call that "d".

                           d     =     r     ×     t

Monday               d     =

Tuesday              d     =

Now we are told about the times it took to get there on both days.  Monday took 2.7 hours and Tuesday took 3 hours.  Filling in that:

                            d     =     r     ×     t

Monday                d     =           ×     2.7

Tuesday               d     =           ×     3

We're getting there.  Now let's look at rates.  Again, we don't know her rate (that's what we are solving for!) but we do know that she drove faster on Monday than Tuesday.  Tuesday she was 6 miles per hour slower than Monday.  Since we don't know Monday's rate, we will call it r.  Since we don't know Tuesday's rate, but only that it is 6 mph slower than Monday, we will call it r - 6

                            d     =     r     ×     t

Monday               d     =     r      ×     2.7

Tuesday               d     =    r-6   ×     3

Now we have our equations.  We know that d = rt.  Since the distances are the same, d = d, by the transitive property of equality, we can set the 2 expressions equal to each other:

2.7r = 3(r - 6) and solve for r:

2.7r = 3r - 18

-.3r = -18

r = 60

If r = 60, then that r value goes in for Monday.  That means that Tuesday is 60 - 6 which is 54

What was her average speed on Tuesday is 54 mph

Monday

Time = 2.7 hours

Date = r mph

Distance = 4.5r miles

Tuesday

Time = 3 hours

rate = r-6 mph

Distance = 3(r-6) miles

Hence:

Distance = distance

2.7r=3(r-6)

2.7r = 3r - 18

0.3r = 18

r =18/0.3

r 60 mph ( Monday rate)

r-6=60-3  (Tuesday rate)

r-6 = 54 mph (Tuesday rate)

Inconclusion  What was her average speed on Tuesday is 54 mph.

Learn more here:

https://brainly.com/question/13238620

Answer:

3 hours and 30 minutes

Step-by-step explanation:

Since both of these times are in the P.M., each hour has 60 minutes and 2:30 is half, add 30 minutes to get 3:00 P.M. and then add 3 hours to get 6:00 P.M. . 3 hours and 30 minutes added to 2:30 P.M. equals 6:00 P.M. :)

Answer:

3 hours and 30 minutes

Step-by-step explanation:

Kylie started basketball practice at 2:30

Kylie finished basketball practice at 6:00

Time duration = 3 hours and 30 minutes

2 : 30 → 3 : 00

( 30 minutes )

3 : 00 → 6 : 00

( 3 hours )

3 hours + 30 minutes = 3 hours and 30 minutes

Answer:

weak negative

Step-by-step explanation:

we know that

The correlation coefficient r measures the direction and strength of a linear relationship. It can take a range of values from +1 to -1.

Values between -0.5 and -1.0 or 0.5 and 1.0 indicate a strong negative/positive linear relationship

Values between -0.3 to -0.1 or 0.1 to 0.3 indicate a weak negative/positive linear relationship

In this problem

The correlation coefficient for the data is −0.31

therefore

Is a weak negative correlation

The answer is 80%

Correct me if I’m wrong

Answer:

Option C. [tex]y = (x-8) ^ 2[/tex]

Step-by-step explanation:

If we have a parent function f(x) and we want to make a transformation that translates the graph of f(x) horizontally then we do

[tex]y = f (x + h)[/tex]

Where h is a constant such that:

If [tex]h> 0[/tex] then the graph of f(x) moves h units to the left

If [tex]h <0[/tex] then the graph of f(x) moves h units to the right.

In this case we have the function [tex]y = x ^ 2[/tex] and we know that 8 units are moved to the right. If you move 8 units to the right This means that

[tex]h <0[/tex] and [tex]h = -8[/tex]

So if [tex]f(x) = x ^ 2[/tex] the transformed function will be:

[tex]y = f(x -8)[/tex]

[tex]y = (x-8) ^ 2[/tex]

Answer:

A

Step-by-step explanation:

Diagonals of a parallelogram bisect each other.

3x = 3

x = 1

y = x

y = 1

In a parallelogram, the parts in which each diagonal cuts the other are congruent.

This means that we must have

[tex]\begin{cases}3=3x\\x=y\end{cases}[/tex]

From the first equation we can deduce x=1, and thus y=x=1.

Answer

the rectangle

Step-by-step explanation:

the cylinder folds like a circle but it is not a circle.

A rectangular shape can be rotated about an axis to form a cylinder.

A cylindrical shape is a three-dimensional geometrical shape consisting of two parallel circular bases which are connected by some height h.

We know that cylinder has some height h and two base circles.

If we compare the curved part of the cylinder then we can see that its shape is similar to a rectangle.

The length of the rectangle is similar to the circumference of the circular base of a cylinder and the height of the cylinder with the breadth of the rectangle.

Thus, a rectangular shape can be rotated about an axis to form a cylinder.

Learn more about the cylindrical shape:

https://brainly.com/question/25103758

Answer:

25 possible outcomes

19 non-red outcomes

Step-by-step explanation:

there are 25 cards. if you remove the 6 red card outcomes you have 19.