1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
stellarik [79]
3 years ago
8

How to answer because I struggle to answer

Mathematics
1 answer:
SpyIntel [72]3 years ago
5 0

5: AA  47=47    36=36  similar

6: SSS   32/16 =2,  24/12 =2,  9/4.5 = 2  similar    

7: SAS  72/53= 1.3,  55=55, 48/12 = 4  not similar

8: SAS  45/15= 3,  54=54,  9/3=3  Similar

9.SAS  20/10 =2,  10/8 = 1.25  not similar

10.SAS  32/14= 2.29, 46=46,  12/7= 1.79  not similar


You might be interested in
What is the circumference of a circle<br> with radius 64 inches? Write your answer<br> using PI.
yarga [219]

Answer:

C≈402.12in

Step-by-step explanation:

The circumference of a circle is equal to pi times the diameter. The diameter is two times the radius, so the equation for the circumference of a circle using the radius is two times pi times the radius

7 0
2 years ago
Complete the point-slope equation of the line through ( − 5 , 4 ) (−5,4)left parenthesis, minus, 5, comma, 4, right parenthesis
Tanzania [10]

The point slope form of equation through given points is:

y-6=\frac{1}{3}(x-1)

Step-by-step explanation:

Given points are:

(x1,y1) = (-5,4)

(x2,y2) = ((1,6)

First of all we have to find the slope of line

So,

m=\frac{y_2-y_1}{x_2-x_1}\\=\frac{6-4}{1+5}\\=\frac{2}{6}\\=\frac{1}{3}

Point-slope form is given by:

y-y_1=m(x-x_1)

Putting m=1/3

y-y_1=\frac{1}{3}(x-x_1)

Putting (1,6) in the equation

y-6=\frac{1}{3}(x-1)

The point slope form of equation through given points is:

y-6=\frac{1}{3}(x-1)

Keywords: Point slope form

Learn more about point slope form at:

  • brainly.com/question/2150928
  • brainly.com/question/2154850

#LearnwithBrainly

3 0
3 years ago
A pizza restaurant has 21 topping choices and 3 dough choices. How many different 3-topping pizzas can be made if toppings can b
Zanzabum
189 because you have to multiply by 3 twice.
3 0
3 years ago
Two men, 400 feet apart, observe a balloon between them it is the same vertical plane as they are. The respective angles of elev
slava [35]
The answer is 471 feet.

If A = man to left of balloon 
<span>B = balloon </span>
<span>C = man to right of balloon </span>

<span>∠BAC = 75°20' </span>
<span>∠BCA = 49°30' </span>
<span>∠ABC = 180 - 75°20' - 49°30' = 55°10' </span>
<span>AB = 400 ft </span>

<span>Now we have to find the value of x, which is the side opposite to angle of 75°20' </span>

<span>Using Law of Sines: </span>
<span>x/sin(75°20') = 400/sin(55°10') </span>
<span>x = 400 * sin(75°20') / sin(55°10') </span>
<span>x = 471.44 </span>
<span>x = 471 ft </span>
4 0
3 years ago
If it exists, solve for the inverse function of each of the following:
nata0808 [166]

Answer:

<em>The solution is too long. So, I included them in the explanation</em>

Step-by-step explanation:

This question has missing details. However, I've corrected each question before solving them

Required: Determine the inverse

1:

f(x) = 25x - 18

Replace f(x) with y

y = 25x - 18

Swap y & x

x = 25y - 18

x + 18 = 25y - 18 + 18

x + 18 = 25y

Divide through by 25

\frac{x + 18}{25} = y

y = \frac{x + 18}{25}

Replace y with f'(x)

f'(x) = \frac{x + 18}{25}

2. g(x) = \frac{12x - 1}{7}

Replace g(x) with y

y = \frac{12x - 1}{7}

Swap y & x

x = \frac{12y - 1}{7}

7x = 12y - 1

Add 1 to both sides

7x +1 = 12y - 1 + 1

7x +1 = 12y

Make y the subject

y = \frac{7x + 1}{12}

g'(x) = \frac{7x + 1}{12}

3: h(x) = -\frac{9x}{4} - \frac{1}{3}

Replace h(x) with y

y = -\frac{9x}{4} - \frac{1}{3}

Swap y & x

x = -\frac{9y}{4} - \frac{1}{3}

Add \frac{1}{3} to both sides

x + \frac{1}{3}= -\frac{9y}{4} - \frac{1}{3} + \frac{1}{3}

x + \frac{1}{3}= -\frac{9y}{4}

Multiply through by -4

-4(x + \frac{1}{3})= -4(-\frac{9y}{4})

-4x - \frac{4}{3}= 9y

Divide through by 9

(-4x - \frac{4}{3})/9= y

-4x * \frac{1}{9} - \frac{4}{3} * \frac{1}{9} = y

\frac{-4x}{9} - \frac{4}{27}= y

y = \frac{-4x}{9} - \frac{4}{27}

h'(x) = \frac{-4x}{9} - \frac{4}{27}

4:

f(x) = x^9

Replace f(x) with y

y = x^9

Swap y with x

x = y^9

Take 9th root

x^{\frac{1}{9}} = y

y = x^{\frac{1}{9}}

Replace y with f'(x)

f'(x) = x^{\frac{1}{9}}

5:

f(a) = a^3 + 8

Replace f(a) with y

y = a^3 + 8

Swap a with y

a = y^3 + 8

Subtract 8

a - 8 = y^3 + 8 - 8

a - 8 = y^3

Take cube root

\sqrt[3]{a-8} = y

y = \sqrt[3]{a-8}

Replace y with f'(a)

f'(a) = \sqrt[3]{a-8}

6:

g(a) = a^2 + 8a- 7

Replace g(a) with y

y = a^2 + 8a - 7

Swap positions of y and a

a = y^2 + 8y - 7

y^2 + 8y - 7 - a = 0

Solve using quadratic formula:

y = \frac{-b\±\sqrt{b^2 - 4ac}}{2a}

a = 1 ; b = 8; c = -7 - a

y = \frac{-b\±\sqrt{b^2 - 4ac}}{2a} becomes

y = \frac{-8 \±\sqrt{8^2 - 4 * 1 * (-7-a)}}{2 * 1}

y = \frac{-8 \±\sqrt{64 + 28 + 4a}}{2 * 1}

y = \frac{-8 \±\sqrt{92 + 4a}}{2 * 1}

y = \frac{-8 \±\sqrt{92 + 4a}}{2 }

Factorize

y = \frac{-8 \±\sqrt{4(23 + a)}}{2 }

y = \frac{-8 \±2\sqrt{(23 + a)}}{2 }

y = -4 \±\sqrt{(23 + a)}

g'(a) = -4 \±\sqrt{(23 + a)}

7:

f(b) = (b + 6)(b - 2)

Replace f(b) with y

y  = (b + 6)(b - 2)

Swap y and b

b  = (y + 6)(y - 2)

Open Brackets

b  = y^2 + 6y - 2y - 12

b  = y^2 + 4y - 12

y^2 + 4y - 12 - b = 0

Solve using quadratic formula:

y = \frac{-b\±\sqrt{b^2 - 4ac}}{2a}

a = 1 ; b = 4; c = -12 - b

y = \frac{-b\±\sqrt{b^2 - 4ac}}{2a} becomes

y = \frac{-4\±\sqrt{4^2 - 4 * 1 * (-12-b)}}{2*1}

y = \frac{-4\±\sqrt{4^2 - 4 *(-12-b)}}{2}

Factorize:

y = \frac{-4\±\sqrt{4(4 - (-12-b))}}{2}

y = \frac{-4\±2\sqrt{(4 - (-12-b))}}{2}

y = \frac{-4\±2\sqrt{(4 +12+b)}}{2}

y = \frac{-4\±2\sqrt{16+b}}{2}

y = -2\±\sqrt{16+b}

Replace y with f'(b)

f'(b) = -2\±\sqrt{16+b}

8:

h(x) = \frac{2x+17}{3x+1}

Replace h(x) with y

y  = \frac{2x+17}{3x+1}

Swap x and y

x  = \frac{2y+17}{3y+1}

Cross Multiply

(3y + 1)x = 2y + 17

3yx + x = 2y + 17

Subtract x from both sides:

3yx + x -x= 2y + 17-x

3yx = 2y + 17-x

Subtract 2y from both sides

3yx-2y  =17-x

Factorize:

y(3x-2)  =17-x

Make y the subject

y = \frac{17 - x}{3x - 2}

Replace y with h'(x)

h'(x) = \frac{17 - x}{3x - 2}

9:

h(c) = \sqrt{2c + 2}

Replace h(c) with y

y = \sqrt{2c + 2}

Swap positions of y and c

c = \sqrt{2y + 2}

Square both sides

c^2 = 2y + 2

Subtract 2 from both sides

c^2 - 2= 2y

Make y the subject

y = \frac{c^2 - 2}{2}

h'(c) = \frac{c^2 - 2}{2}

10:

f(x) = \frac{x + 10}{9x - 1}

Replace f(x) with y

y = \frac{x + 10}{9x - 1}

Swap positions of x and y

x = \frac{y + 10}{9y - 1}

Cross Multiply

x(9y - 1) = y + 10

9xy - x = y + 10

Subtract y from both sides

9xy - y - x = y - y+ 10

9xy - y - x =  10

Add x to both sides

9xy - y - x + x=  10 + x

9xy - y =  10 + x

Factorize

y(9x - 1) =  10 + x

Make y the subject

y = \frac{10 + x}{9x - 1}

Replace y with f'(x)

f'(x) = \frac{10 + x}{9x -1}

8 0
2 years ago
Other questions:
  • What is the circumference of the circle shown below
    5·2 answers
  • PLEASE HELP ME!!!!!!!!!!!
    12·2 answers
  • 25xy=225 convert to polar form
    10·1 answer
  • What is 26% of 150?.?.?
    8·2 answers
  • Solve x^2 = –169 this is a question on square and cubed roots
    8·1 answer
  • Which of the following expressions is equivalent to 3x + 3x + 5 + 5?
    9·2 answers
  • Which exponent makes the statement true?
    9·2 answers
  • Ramon earns $1,645 each month and pays $53.40 on electricity. To the nearest tenth of a percent, what percent of Ramon’s earning
    11·1 answer
  • What is the equation of the line that passes through the point (6,4) and has a slope of -2/3
    13·1 answer
  • The coordinates of the endpoints of MP¯¯¯¯¯¯ are M (−3,−2) and P (2,3).
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!