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
Andre45 [30]
3 years ago
9

Which pair of triangles is similar?

Mathematics
2 answers:
irina [24]3 years ago
6 0
I believe the answer is the fourth option....because 13 × 3 is 39 5 × 3 is 15 and 12 × 3 is 36
Ilya [14]3 years ago
6 0
The last choice is correct as the each side of a bigger triangle shows the correct ratio. 5x3=15. 13x3=39. 12x3=36.
You might be interested in
Of the 36 students in the book club .five ninths Of the students prefer adventure books to historical books. How many of the stu
Effectus [21]
You have to make a tape diagram and divide it in to 9 parts because it is 5 out of 9 then you will make a bracket pointing to only 4 parts of the tape diagram then you do 36/9 and it will equal 4 so put 4 in to each part and so 4 x 4 is 16 so the answer is 16 people prefer historical books
8 0
3 years ago
Read 2 more answers
From 95 books to 116 books
nekit [7.7K]

Answer:

21 books were added

Hope I helped,

PumpkinSpice1

☼♥☼♥☼♥☼♥☼

7 0
3 years ago
What is 618,334 rounded to the nearest 10,000
weqwewe [10]
The answer would be 620000
4 0
3 years ago
Read 2 more answers
Dakota makes a salad dressing by combining 6 1/3 fluid ounces of oil and 3 3/8 fluid ounces of
pashok25 [27]

Answer:

6 11/24

Step-by-step explanation:

Do that on any calculator and it'll be that (also, if you have any other questions like that, I recommend MathPapa

7 0
3 years ago
2. Consider the circle x^2−4x+y^2+10y+13=0. There are two lines tangent to this circle having a slope of 2/3.
likoan [24]

Answer:

a) The coordinates are (0.431, -2.646) and (3.568,-7.354)

b) The tangent lines are

l₁ = (x-0.431)*2/3 - 2.646

l₂ = (x-3.568)2/3 - 7.354

Step-by-step explanation:

First, lets complete squares, by taking for each cordinate the square of a linear expression

0= x²−4x+y²+10y+13 = (x-2)²+ 4  + (y+5)²-25+13 = (x-2)²+(y+5)² - 8

Hence (x-2)² + (y+5)² = 8

Lets put y in function of x. We should obtain 2 functions f and g that represent the circle.

(y+5)² = 8 - (x-2)² = -x² + 4x + 4

y = ^+_- \sqrt{-x^2+4x+4} -5

Thus

f(x) = \sqrt{-x^2+4x+4} - 5

g(x) = -\sqrt{-x^2+4x+4} - 5

Lets find the derivate of each function and the points in which they reach the value 2/3. In those points the tangent line will have a slope of 2/3.

We may just find the values of x which the derivate of f is either 2/3 or -2/3.

\frac{-x+2}{\sqrt{-x^2+4x+4}} = ^+_-\frac{2}{3} \Leftrightarrow \frac{x^2-4x+4}{-x^2+4x+4} = \frac{4}{9} \Leftrightarrow 9(x^2-4x+4) = 4(-x^2+4x+4) \\\Leftrightarrow 13x^2-52x+20 = 0

The quadratic has roots

\frac{52 ^+_-\sqrt{1664}}{26}

one root is 3.568, which corresponds with g, and the other root is 0.431, corresponding to f.

Also g(3.568) = - 7.354 and f(0.431) = -2.646

This means that the coordinates are (0.431 , -2.646), (3.568 , -7.354) and the tangent lines are

l₁ = (x-0.431)*2/3 - 2.646

l₂ = (x-3.568)2/3 - 7.354

5 0
3 years ago
Other questions:
  • A Ford is traveling 20 mph slower than a Buick. The Buick is traveling at a rate of 65 mph
    11·1 answer
  • What is the square root of 9/49 as a fraction?
    11·1 answer
  • In circle T, ∠PTQ ≅ ∠RTS.
    13·2 answers
  • If a math problem is asking me to take 50% to 70% of your maximum heart rate , is it asking me to subtract ? what operation do i
    10·1 answer
  • Pls pls help I don’t have time HELP ASAP. It also detects if it’s right or wrong.
    5·2 answers
  • A research center conducted a telephone survey of 2,000 adults to learn about the major economic concerns for the future. The su
    13·1 answer
  • Please help :( i don’t understand!
    7·1 answer
  • Factor completely −5x3 + 10x2.<br> Prime<br> −x(5x2 − 10x)<br> 5x(−x2 + 2x)<br> −5x2(x − 2)
    15·2 answers
  • Solve this quetion...3
    5·1 answer
  • Griffin ordered a pair of sneakers online. He had a $19 credit that he applied toward the purchase, and
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!