Mathematics High School

In the right triangle shown m angle A =45° and AB=12 how long is BC?

Answers

Answer 1

Answer: there u go this the correct answer if your on khan academy.

Answer 2

From the given right angle triangle, the length of side BC will be equal to 6√2.

What is a right angle triangle?

Any triangle that has one 90º angle has a right angle. Right triangles are those with an angle of 90 degrees, or "right angles," and are therefore those with this angle. The Pythagorean rule can be used to clarify the relationship between both the triangle's different sides.

As per the data provided in the question,

If one of the angles in a right triangle is 45 degrees, therefore the complimentary angle must also be 45 degrees.

Then,

m∠B = 45°

From the triangle ABC.

Cos B = BC/AB

As we know, the value of cos at 45° = √2/2

AB = 12

BC = cos (B) (AB)

BC = (√2/2) × 12 = 6√2 units.

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Related Questions

A. 13 π
B. 6.5 π
C. 42.25 π
D. 60 π

Answers

Answer:

12^2 + 5^2= c^2 c=13 Area of circle A= pi× r^2 A= 42.25×piCI do exams and quizzes if your interested, guaranteed A!

Help with #10 please I’m having trouble understanding

Answers

Answer:

u=66(oppodite angles of parallrlogram are equal)

66+3v=180( cointerior angle)

3v=114

V=38

Step-by-step explanation:

plz mske me brainliest

On a map with a scale of 1 cm : 2.5 km two towns are 5 cm apart. What is this distance in real life?

Answers

Answer:

12.5 km

Step-by-step explanation:

1cm = 2.5km

2cm = 5km

3cm = 7.5km

4cm = 10km

5cm = 12 5km

Kylie borrowed a book from a library. The library charged a fixed rental for the book and a late fee for every day the book was overdue. The expression below shows the charges Kylie paid for the book when she returned it x days after the due date:

2 + 0.25x

What does the constant term of the expression represent?

The late fee for the book
The fixed rental for the book
The number of books borrowed
The number of days the book was overdue

Answers

Answer:

The fixed rentals for the book

Answer:

Step-by-step explanation:

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Answers

Answer:

"A number cubed is a power where the base is the variable n and the exponent is 3"

"Increased by 4 means add 4"

"The expression is written as n^3 + 4"

I agree with the person above me she or he should get brainlyest

CAN I GET HELP PLEASE!

Answers

Answer:

0.30 of a book / hour or 3/10 of a book per hour.

Step-by-step explanation:

Usually I tell people to put the numbers into decimals. Unfortunately for this question, it won't work. So we have any choice but to do it with fractions.

r = amount / time

amount = 1/4

time = 5/6

r = [tex]\frac{\frac{1}{4} }{\frac{5}{6} }[/tex]

Invert the denominator and multiply

r = [tex]\frac{1}{4} * \frac{6}{5}[/tex]

r = 6 * 1 / (5*4) = 6/20 = 3/10

The answer is 3/10 of a book per hour

5/6 of an hour is almost an hour.

1/4 of a book is 0.25 of a book.

3/10 of a book is 0.30 of a book. So it looks like it is just about right.

The expression logx (ab) is equivalent to

Answers

Answer:

logx a + logx b

Step-by-step explanation:

can someone solve this?

Answers

47z²−25

Step-by-step explanation:

3627272727822881818181

Answer:

130z-3

Step-by-step explanation:

Break down the equation:

(9[tex]z^{2}[/tex]-4)=

9z * 9z= 81z

You can't subtract 4, so I left it at (81z- 4)

(7[tex]z^{2}[/tex]+ 1)=

7z * 7z= 49z

You can't add 1, so I left it at (49z+ 1)

Then Solve:

You can add 81z and 49z.

81z+49z= 130z

-4+1= -3

Hope this helps!

Ryan scored 12 more points than Alex on a video game. If together they scored 214 points, how many points
does each person score?

Answers

Answer:

Ryan 113, Alex 101

Step-by-step explanation:

Ryan beats Alex by 12 points

101+101=202

202+12=214

113+101=214

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Answers

Answer:

50%

Step-by-step explanation:

Answer:

Step-by-step explanation:

look at where the line perfectly goes through a point on the table, ie (60,20) or (70,50), and count up each unit until you see it is aligned with another point that perfectly crosses through. then see how many units left or right you need to go to reach that point. on this graph you go up 3 units and to the right 1 unit, 3/1=3. the slope is 3

Spins a fair spinner numbered 1 - 5 and flips a fair coin. What is the probability of obtaining a factor of 15 and a tail?

Answers

Answer:

3/10

Step-by-step explanation:

Probability is the ratio of the number of possible outcome to the number of total outcome.

Given that the fair spinner is numbered 1 - 5, the factors of 15 there are 1, 3 and 5 hence the probability of obtaining a factor of 15

= 3/5

The probability of obtaining a tail from the flip of a coin

= 1/2

Hence the probability of obtaining a factor of 15 and a tail

= 3/5 * 1/2

= 3/10

5(wx + yz) =5wx + 5xy

Answers

Answer:

Step-by-step explanation:

5wx+5yz=5wx+5xy

5wx-5wx+5yz=5xy

5yz=5xy

5Y(X-Z)=0
Step-by-step explanation:
5(WX+YZ)= 5WX+5XY
Open bracket l.h.s
5wx+ 5yz
Put like terms together
5wx-5wx= 5xy-5yz
Substitute
0=5y(x-z)

The rectangle is enlarged by a scale factor of 5. What is the perimeter of
the enlarged rectangle?

Answers

Answer:

I believe its 90

Step-by-step explanation:

You multiply each side by 5

5x5=25

double it for the other side

4x5= 20

double it

50+40=90

Luego de dormir 6 horas al día a usted le quedan 18, que puede repartir entre estudio y ocio. X representa
las horas dedicadas al ocio y la variable Y las horas de estudio. Represente la relación lineal existente entre
las distintas combinaciones posibles de X e Y.

Answers

¿puede por favor hablar inglés

The linear relationship between the different possible combinations of X and Y is Y= -X + 18.

What is an equation?

An equation contains one or more terms with variables connected by an equal sign.

Example:

2x + 4y = 9 is an equation.

2x = 8 is an equation.

We have,

We know that after sleeping for 6 hours, there are 18 hours left in a day. These 18 hours can be split between leisure time and study time.

Now,

Let's let X be the number of hours of leisure time, and Y be the number of hours of study time.

Since we know that there are a total of 18 hours,

we can set up the following equation.

X + Y = 18

This equation represents all the possible combinations of X and Y that add up to 18 hours.

Now,

To represent a linear relationship between X and Y.

Y = -X + 18

This equation represents a linear relationship between X and Y.

Where X is the independent variable and Y is the dependent variable.

This is in the form of a slope-intercept form.

y = mx + c

Where m = -1 and c = 18

So,

The slope = -1 and the y-intercept is 18.

Thus,

Y= -X + 18 represents all the different possible combinations of leisure time and study time that adds up to 18 hours.

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The complete question.

After sleeping 6 hours a day, you have 18 hours left, which you can divide between study and leisure. X represents the hours dedicated to leisure and the variable Y the hours of study. Represent the linear relationship between the different possible combinations of X and Y.

Help please please answer

Answers

Answer:

Step-by-step explanation:

x. y = 28

check attachment

plz plz plz help ASAP

Answers

Answer

B. number five is right

Step-by-step explanation:

Answer:

Step-by-step explanation:

First, subtract the $6 toy from the total of $71.

$71 - $6 = $65

The total of the shirts and pants is $65.

She bought 9 shirts and 4 pants, which would be 13 shirts and pants.

We then divide the total cost of the shirts and pants, $65 by the total shirts and pants, 13.

65 / 13 = 5

So, each shirt or pants costs $5.

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3+3-5^2

There was a person who wanted frisk or chara with a buzz cut or pixi cut so here you go ^^

Answers

Answer:

-19

Step-by-step explanation:

[tex] 3 + 3 - {5}^{2} [/tex]

[tex]3 + 3 - 25[/tex]

[tex] = - 19[/tex]

IM GIVING 43 POINTS PLS ANSWER ASAP I MARK BRAINLIEST

Answers

Answer:

m = 3

Step-by-step explanation:

Get two points and use slope formula

Points

(50, 40) and (60, 70)

Find the slope:

m = (y₂ - y₁)/(x₂ - x₁) m = (70 - 40)/(60 - 50) = 30/10 = 3

Anyone know the middle question ?

Answers

Ab is obtuse acute to AD
DC is perpendicular parallel to AB

parrallel :)))))))))))

A baker melts 80 grams of chocolate that contains 40% cocoa and mixes it with 60
grams
of his secret mixture. The result is a chocolate with 55% cocoa. What is the
percent of cocoa in the baker's secret mixture?

Answers

Answer:

15%

Step-by-step explanation:

55%-40% = 15% cocoa.

Answer is 15% as the chocolate is 40% cocoa before mixture

Find the solution
4y-x=5+2y
3x+7y=24

Answers

Answer:

Step-by-step explanation:

What is the solution set for −4 x + 10 ≥ 5 x + 55?

Answers

Answer:

(-5,0)

Step-by-step explanation:

Put -4x+10 ≥ 5x+55 in Desmos Scientific Calculator and you have your answer

Rewrite in simplest terms: 3(2p - 5) - 6p

Answers

-15

Reason:

First, use the distributive property

3(2p - 5) - 6p = 6p - 15 - 6p = -15

When Three friends divide four boxes of baseball trading cards ?evenly, they each get 48 cards. How many cards are in each box?

Answers

Answer:

36 cards in each box

Step-by-step explanation:

Let the number of cards in each box be x.

4 * x / 3 = 48 (4 packs of cards, three friends)

x / 3 = 21

x = 36.

Answer:

36 cards in each box

Step-by-step explanation:

Because each friend gets the same amount of cards, there needs to be 48*3 or 144 trading cards in total. There are 4 boxes so in each box there would be 144/4 or 36 cards in total.

Consider the line - 4x – 3y = 5.
What is the slope of a line perpendicular to this line?
What is the slope of a line parallel to this line?

Answers

Answer:

The slope of the perpendicular line is 1/4

A line parallel to this will have the same gradient of -4.

9x + 5 = 4(x + 2) + 5x
solve for X

Answers

Answer:

no solution

Step-by-step explanation:

9x + 5 = 4(x+2) + 5x

9x + 5 = 4x + 8 + 5x

9x + 5 = 9x + 8

9x + 5 can never be equal to 9x + 8, so the answer is no solution

Answer:

x=3

Step-by-step explanation:

9x + 5 =4(x+2) + 5x

9x + 5= 4x + 8+ 5x ( do the parenthesis first- mulitiply 4 and x and get 4x and 4 times 2 = 8)

9x + 5 = 9x + 8 ( add the x's together 4x +5x = 9x )

9x = 9x + 3 ( subtract 5 both sides and you get 3 )

=3 ( subtract 9x from both sides

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and if there is a choice no solution :))

HELP meeeeee please

Answers

Answer: a = 23, b = 21, c = 136

Step-by-step explanation:

Please explain how you got the answer. Don’t just tell me the answer

Answers

Answer: (4 3/5) x (3 1/2)

23/5 (3 1/2)

23/5 (7/2)

161/10 =

your answer is 16 1/10

Step By-step explanation:

is 144 a natural number yes or no

Answers

Answer:

is 144 a natural number yes or no

Yes

I'm not sure

4x + 3y = -26
x-3y =-14

Answers

Answer:

y = 8 x= -16

Step-by-step explanation:

4x+26x = -6y =14

30x = 14

-6y = 14 x = 14- 30

y+= 14-6

y = 8 x= -16

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