I need help please I don’t understand this

I Need Help Please I Dont Understand This

Answers

Answer 1

Answer:

cosB = 21/75, tanB = 72/21

Step-by-step explanation:

Here, we can use pythagoras to figure out all sides. 75^2-72^2 = 21^2. So, we have sides with lengths 21, 72, and 75. We are given that sinB = 72/75. The definition of sin is opposite of hypotenuse. So, the opposite of angle B is side CA and the hypotenuse is BA. This allows us to find that BC is the 21 length side. The cos of an angle is adjacent over hypotenuse. In this case, it is BC/BA which is 21/75. similarly, Tan is opposite over adjacent or 72/21. And we are done. Those are the values. TO remember these, use the acronym:

SOH CAH TOA. S refers to sin and OH refers to opposite over hypotenuse. Similarly C is cos, A is adjacent, and H is hypotenuse, and then T is tan,  o is opposite and A is adjacent.


Related Questions

PLEASE HELP WILL MARK BRAINLIEST FOR RIGHT ANSWER!!

Answers

Answer:

Population 2 pattern is that every year the population goes down by 2

Step-by-stepation:

Which is equal to 0.47?
CLEAR
SUBMIT
47
1,000
47
100
47
10
47

Answers

Answer: 47/100

Step-by-step explanation: 47/100 = 0.47.

What is the value for y
When x=20
Y=-2x+8

Answers

Answer:

y = -32

Step-by-step explanation:

Y=-2x+8

Let x= 20

y = -2 * 20 +8

y = -40+8

   = -32

Write an integer to represent the following situation:A loss of 20 yards

Answers

Answer:

wth is your pfp lol I'm sory

The correct integers to represent the situation ''A loss of 20 yards'' is,

⇒ - 20

What is mean by Subtraction?

Subtraction in mathematics means that is taking something away from a group or number of objects. When you subtract, what is left in the group becomes less.

We have to given that;

The situation is,

⇒ A loss of 20 yards.

Since, Here A loss of 20 yards.

Hence, It represented by the integer '- 20' because of loss.

Thus, The correct integers to represent the situation is,

⇒ - 20

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What is the scale factor from triangle ABC to triangle PQR?

Answers

The scale factor from triangle ABC to triangle PQR is 2/3 or 3/2, depending on the direction of comparison.

To find the scale factor from triangle ABC to triangle PQR, we need to compare the corresponding side lengths of the two triangles.

Side AB corresponds to side PQ, which has a length of 6 units.

Side BC corresponds to side QR, which has a length of 9 units.

Side AC corresponds to side PR, which has a length of 12 units.

So, the scale factor from triangle ABC to triangle PQR can be found by comparing the ratio of corresponding side lengths:

AB/PQ = BC/QR = AC/PR

Using the values we found above, we can write:

|AB/PQ| = 2/3

|BC/QR| = 3/4

|AC/PR| = 4/5

Since all three ratios are equal in magnitude, we can take any one of them to be the scale factor. Therefore, the scale factor from triangle ABC to triangle PQR is 2/3 or 3/2, depending on the direction of comparison.

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What is the domain of the function below?

Answers

Answer:

[-4, 4]

Step-by-step explanation:

Domain is the set of x-values that can be inputted into function f(x).

From the graph we see that our x-values span from -4 to 4. Since both are closed dots, they are included in the domain (use brackets):

[-4, 4] or -4 ≤ x ≤ 4

Which equation represents a line that passes through (5, 1) and has a slope of 1/2?

y-5= 1/2(x-1)

y-1/2=5(x-1)

y-1=1/2(x-5)

y-1=5[x-1/2]​

Answers

Step-by-step explanation:

Hey there!

The given point is (5,1) and slope is 1/2.

Let's use one point formula for finding the eqaution.

[tex](y - y1) = m(x - x1)[/tex]

Keep all values.

[tex](y - 1) = \frac{1}{2} (x - 5)[/tex]

This matches with Option C,

So, your answer is Option C.

Hope it helps...

A and \angle B∠B are supplementary angles. If m\angle A=(5x-19)^{\circ}∠A=(5x−19)

and m\angle B=(2x+10)^{\circ}∠B=(2x+10)

, then find the measure of \angle B∠B.

Answers

Answer: 52

Step-by-step explanation:

4x+8 = 5x-3 by the Vertical Angles Theorem that states the vertical angles are congruent.  

Subtract 4x from both sides and get:

8=1x -3

Add 3 to both sides:

11= 1x

if x =11, plug that in to angle A.  

4x+ 8 becomes 4(11)+8 =

44+ 8=

52

Calculate the reciprocal of -0.013, correct to 1 decimal

Answers

Answer:

Step-by-step explanation:

-0.013 = [tex]\frac{-13}{1000}[/tex]

Reciprocal = [tex]\frac{-1000}{13} =-76.9[/tex]

Answer for brainliest.

Answers

Answer:

t > 28

Step-by-step explanation:

Given

[tex]\frac{t}{4}[/tex] > 7 ( multiply both sides by 4 to clear the fraction )

t > 28

Answer:

[tex]t>28[/tex]

Step-by-step explanation:

[tex]\frac{t}{4} >7\\[/tex]

Times both sides by 4

[tex]t>28[/tex]

Hope this helps and pls do mark me brainliest:)

Exercise 1. A truck has the capacity to transport up to 8 tons of a material at a time. If 104 tons of the material should be transported, how many trucks like this will be needed?

Answers

Answer:

how many trucks ?

Step-by-step explanation:

It is solved using the rule of three simple ones, where the number of trucks is for the quantity of material transported. We have that 1 is for 8 as X is for 104 (Look attached).

Multiplying cross, we have to:

8X = 104

X = 104/8

X= 13

What is an equation of the line that passes through the points (6,-4) and (1,6)?
Put your answer in fully reduced form.

Answers

Answer:

y

=

m

x

+

b

to find the equation.

y

=

2

x

+

8

Step-by-step explanation:

please give answer i no wanna fail

Answers

Answer:48x14=672

139x12=1668

1668+672=2340

Step-by-step explanation:

You're finding the area of each stamp in length, so add the total area for each stamp together.

Brainly's not just for answers, it's for helping each other learn. :)

Encuentra la ecuación del siguiente enunciado. En una caja de cartón se empacan latas de atún. Al acomodarlas, resulta que caben 5 latas más a lo largo que a lo ancho y a lo alto caben 3 latas más que a lo ancho. ¿Cuántas latas caben en total en la caja?
1 punto

x+5 = x+3

(x) (x+5) (x+3)

x3 + 8x2 + 15x

x (x+5) = x + 3

Answers

Answer:

x + (x + 3) + (x + 5)

Step-by-step explanation:

Sea x el número de latas que caben en el ancho.

Como hay 5 latas más que encajarán en la longitud, el número total de latas que encajarán en la longitud será (x + 5) latas

También caben tres latas más en la altura, la cantidad de latas que será (x + 3)

Así que ahora, el número total de latas que cabrán en la caja será;

x + (x + 3) + (x + 5)

Kerri has to be at school by 8:11. It takes her 5 minutes to brush her teeth, 9 minutes to shower, 15 minutes to dry her hair, 14 minutes to eat breakfast and 18 minutes to walk to school. What time will she need to get up?

Answers

Answer:

7:10

Step-by-step explanation:

18+14+15+9+5 = 61 minutes

Answer:

7:10

Step-by-step explanation:

5+9=14

14+15=29

29+14=43

43+18=61

60 minutes in an hour with one minute left behind.

8-1=7

11-1= 10

7:10

A family leaves at 6:35 AM on a 225 mile trip. If the average speed is 76 miles per hour, what time will they reach their destination?​

Answers

Answer:Ok first multiply. 2 hours and some minutes.

Answer: 9:32

Step-by-step explanation:

225/76 is 2.96, then you do 60x0.96 to find how many minutes that is which is 57 plus the 2 hours is 2 hours 57 minutes and when you add 2 hours 57 minutes to 6:35 you get 9:32

Hummingbirds beat their wings very fast. The smaller the
hummingbird is, the faster its wings beat. The average hummingbird beats its
wings about 3 x 10 3 times a minute. How many times a minute is that, written as
a whole number?

Pls help me! I will give brainliest

Answers

Answer:

A hummingbird's heart beats from 225 times per minute when it's at rest and more than 1,200 times per minute when it is flying. Its wings beat about 70 times per second in regular flight and more than 200 times per second while diving.

Answer: A hummingbird's heart beats from 225 times per minute when it's at rest and more than 1,200 times per minute when it is flying. Its wings beat about 70 times per second in regular flight and more than 200 times per second while diving.

Step-by-step explanation:

Jaime needs a new roof on her house. The cash cost is $7500. She decides to finance the project by paying 20% down , with the balance paid in 36 monthly payments of $189.40. (a) What finance charge will Jaime pay? (b) What is the APR to the nearest half percent ?

Answers

Answer:

(a) What finance charge will Jaime pay?

$818.4

(b) What is the APR to the nearest half percent ?

8.5%

Step-by-step explanation:

(a) What finance charge will Jaime pay?

The cash cost is $7500. She decides to finance the project by paying 20% down

Amount paid for down payment = $7500 × 20/100

= $1500

Amount left = $7500 - $1500

= $6000

The balance paid in 36 monthly payments of $189.40.

Hence: $189.40 × 36 = $6818.4

The finance charge = $6818.4 - $6000

= $818.4

(b) What is the APR to the nearest half percent ?

Step 1

Finance charge/ Amount left × 100

= 818.4/6000 × 100

= 13.64

Using the APR table:

The APR to the nearest half percent = 8.5%


Convert y = x2 - 4x + 1 to vertex form by completing the square.

O y= (- 1)2 + 4
O y= (1 - 2)2 +5
O y= (x - 2)2 – 3
O y = (x - 4) + 1

Answers

Answer:

vertex: (-2, -3)

Step-by-step explanation:

y = x2 + 4x                 + 1  

y = x2 + 4x + 22          + 1 - 22  

y = (x + 2)2 + 1 - 4  

y = (x + 2)2 - 3            in y = (x - h)2 + k, (h, k) is the vertex.  

 

Answer:

y = (x - 2)² - 3

Step-by-step explanation:

Given

y = x² - 4x + 1

To complete the square

add/subtract ( half the coefficient of the x- term )² to x² - 4x

y = x² + 2(- 2)x + 4 - 4 + 1

   = (x - 2)² - 3






Please help!!!!

Carol's class has ninestudents on roll. newstudents join her class and the number of
students increases to 16. Which equation
represents Carol's class roster.
o 16 + X = -9
oX - 16 = 9
o 16X = 9
09 + X = 16

Answers

The last one, 9+x=16

Answer:

9 + X = 16

Step-by-step explanation:

Given parameters:

   Number of students on the roll  = 9

   

Unknown:

The equation representing the class roster  = ?

Solution:

Let the number of additional students that joined the class = x

  Carol's class roster:

     New number of students = number of students + additional students

          16  = 9 + x

The solution of the problem is 9 + x = 16

Students was 1: 8. However, this year the ratio of the number of middle school students to the number of high school students changed to 2: 7. If there are 18 middle school students in the band this year, how many fewer high school students are in the band this year compared to last year? Expla

Answers

Answer:

Step-by-step explanation:

Last year

Ratio of the number of middle school students to number of high school students = 1 : 8

Total ratio = 9

Middle school = 1

High school = 8

Total students in the band = x

Middle school = 1/9x

High school = 8/9x

Total = 1/9x + 8/9x

This year

Ratio of the number of middle school students to number of high school students = 2 : 7

Total ratio = 9

Middle school = 2

High school = 7

Total students = x

Middle school = 2/9x

High school = 7/9x

Total = 2/9x + 7/9x

If there are 18 middle school students in the band this year

2/9x = 18

x = 18÷2/9

= 18 × 9/2

= 81

x = 81

Last year:

1/9x + 8/9x

= 1/9 * 81 + 8/9 * 81

= 9 + 72

= 81

This year

2/9x + 7/9x

2/9*81 + 7/9*81

= 18 + 63

=81

Change in middle school =this year - last year

= 18 - 9

= 9 (increase)

Change in high school = this year - last year

= 63 - 72

= -9 (decrease)

2. Determine the amount of interest owed after 2 years on a $850 loan at 12.25% if no payments
are made. LTD
Enter your answer

Answers

Answer:

Question example:

The amount of interest is 208.74$

Here we have given

Amount (P)=850$

Interest (r)=12.25%

Time (t)=2 years

we have to calculate the simple interest

What is the formula for simple interest?

[tex]I=\frac{PRT}{100}[/tex]

Plug the given value in above formula

[tex]I=\frac{850*12.25*2}{100}[/tex]

Simplify above equation we get

[tex]I=\frac{850*12.25*2}{100}\\\\I=\frac{20874}{100}\\\\I=208.74[/tex]

Therefore the amount of interest is 208.74$

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how do you convert fractions to decimals?​

Answers

Answer:

divide the fractions

Step-by-step explanation:

lets say we have 23/5

we can divide 23 by 5 and get a decimal of 4.6

or lets say we got 1/5

divide 1 by 5 and you will get 0.2

what is 1\4 x 2\5 in simplest form

Answers

Answer:

1/10

Step-by-step explanation:

1/4 x 2/5

Multiply the numerators together

2

Multiply the denominators together

20

So it is 2/20

Simplify.

1/10

Hope I helped :)

Please consider Brainliest :)

Answer:

x/10

Step-by-step explanation:

The double number line shows the approximate number of ounces in a certain number of pounds:

Based on the number line, about how many ounces are there in 10 pounds?
Group of answer choices
144 ounces
160 ounces
176 ounces
192 ounces

Answers

Answer:

B- 160

Step-by-Step Explanation:

I did it before and I was rite, so trust me

Answer:

B 160

Step-by-step explanation:

If the 16 boys in the classroom are 40% of the class how many students are there in the class

Answers

Answer:

56

Step-by-step explanation:

40+16=56

Answer:

40

Step-by-step explanation:

Set up the equation.

Let the full number of people in the classroom = x

(40%) x = 16                Change 40% to a fraction

(40/100) x = 16            Reduce 40/100 to a decimal

0.4 x = 16                     Divide by 0.4

0.4/0.4 x = 16/0.4

x = 40

3/4 change 3/4 to a decimal show work

Answers

Answer:

0.75

Step-by-step explanation:

You just need to convert 3/4 into a decimal.

For example: If you get 3 out of 4 problems right on a quiz, in percent form it will be a 75%, in decimal form 0.75 because you'll move the percent sign 2 spaces to the left. That will then be a decimal if you're converting 75% to 0.75.

3 divided by 4 is also going to give you 0.75. Because, a "fraction slash" is the dividing point. So,

3/4 = 0.75

determine the unit rate for each ratio.
The gas station charges $180 for 3 hours of work. How much
they charge for 1 hour of work?

Answers

Answer:

$60

Step-by-step explanation:

180/3 = 60

I hope this helps :)

Answer:60 per hour

Step-by-step explanation: you divide 180 by 3

5x - 2y= 26 y + 4 = x
Plzzz help I got 10 minutes

Answers

the answer is (x,y) = (4/51 - 8/51)

The Value of x and y are (x,y) = (7,3).

What is Algebraic expression ?

Algebraic expressions are numbers expressed using letters or alphabets without specifying their values. Algebra taught us how to express unknown values using letters such as x, y, and z. There can also be a single value that is placed before and multiplied by a variable in an algebraic expression in addition to these letters, which are called variables.

GIven equations are :

5x - 2y= 26.....(1)

y + 4 = x..........(2)

Solve by substitution :

substitute equation 2 in equation 1 and solve for y

5x - 2y= 26

5(y+4) - 2y = 26

5y + 20 -3y = 26

2y = 26 - 20

2y = 6

y = 3

now, the value of x will be :

x = y + 4

x = 3+4

x = 7

Therefore, The Value of x and y are (x,y) = (7,3).

Learn more about the linear equation here:

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plz help asap nowwww

Answers

Answer:

10 to the power of 5 is 50 so do 50 times 3.8 and 10 to the power of 4 is 40 so do 40 times 5.9

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