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
netineya [11]
3 years ago
13

Please help me on this will give you brainliest!!

Mathematics
2 answers:
dolphi86 [110]3 years ago
8 0

Answer:

bc= 6

Step-by-step explanation:

since the triangles are similar, the sides are in a ratio

xz/ac = 20/4 (5:1)

yx/ba = 15/3 (5:1)

yz/bc = 5:1 = 30/6

dimaraw [331]3 years ago
6 0
The answer would be ?=6 because 15/3=5 20/4=5 so 30/5=6

Hope this helps

Have a great day/night
You might be interested in
Which unit of measure is the most reasonable to measure the length from your house to the grocery store?
Inga [223]
D.miles
Because the grocery store should be a few miles from your home.
4 0
3 years ago
Read 2 more answers
What is the equation of the line graphed below?
vladimir2022 [97]

Answer:

it would A)y =-3x

Step-by-step explanation:

4 0
3 years ago
The National Weather Service keeps track of the temperature for a given day in a given city. It also keeps track of this informa
8090 [49]
The correct answer for this question is: The <span>period(s) of time where the average rate of changes to zero is </span>"b.The average rate of change of temperature is 0 from 2 PM to 4 PM and also from 10 AM to 8 PM; Nothing can be concluded about the actual temperature fluctuation."
5 0
3 years ago
Read 2 more answers
Please solve-y(2+4y)
Elina [12.6K]
To solve this, you distribute the -y to both terms, 2 and 4y.
It will look something like this: (2*-y)+(4y*-y)
When you simplify, look for any like terms that can be combined, and if none, then leave it as it is. 
Your final answer will be: -2y-4y^2
8 0
3 years ago
Arrange the circles (represented by their equations in general form) in ascending order of their radius lengths. X2 y2 − 2x 2y −
Colt1911 [192]

Circles (represented by their equations in general form) in ascending order of their radius lengths can be arranged as first-fifth-second-forth-third-seventh-sixth.

<h3>What is the equation of circle?</h3>

The equation of the circle is the equation which is used to represent the circle in the algebraic equation form with the value of center point in the coordinate plane and measure of radius.

The standard form of the equation of the circle can be given as,

(x-h)^2+(y-k)^2=r^2

Here (h,k) is the center of the circle and (r) is the radius of the circle.

Lets arrange the first equation, in standard form of equation of circle as,

x^2 +y^2 - 2x+ 2y -1 = 0 \\(x^2 - 2x) +(y^2+ 2y )= 1\\(x^2 - 2x+1) +(y^2+ 2y +1)= 1+1+1\\(x-1)^2+(y+1)^2=(\sqrt{3})^2

The radius of this circle is √(3).

Lets arrange the second equation, in standard form of equation of circle as,

x^2 +y^2 - 4x+ 4y - 10 = 0  \\(x^2 - 4x) +(y^2+ 4y )= 10\\(x^2 - 4x+4) +(y^2+ 4y +4)= 10+4+4\\(x-2)^2+(y+2)^2=(\sqrt{18})^2

The radius of this circle is √(18).

Lets arrange the third equation, in standard form of equation of circle as,

x^2 +y^2 - 8x - 6y - 20 = 0   \\(x^2 - 8x) +(y^2-6y )= 20\\(x^2 - 8x+16) +(y^2- 6y +9)= 10+16+9\\(x-4)^2+(y-3)^2=(\sqrt{45})^2

The radius of this circle is √(45).

Similarly, radius of the forth, fifth, sixth and seventh circle is √(23), √(5), √(117) and √(46) units.

Hence, the circles (represented by their equations in general form) in ascending order of their radius lengths can be arranged as first-fifth-second-forth-third-seventh-sixth.

Learn more about the equation of circle here;

brainly.com/question/1506955

3 0
2 years ago
Read 2 more answers
Other questions:
  • Johan and his friends go apple picking Jonah fills 5 baskets each basket holds15 apples. If 4 of Jonah’s friends pick the same a
    10·1 answer
  • It takes 54 minutes for 4 people to paint 6 walls. How many minutes does it take 6 people to paint 7 walls?
    9·2 answers
  • Solve for x. x−1/3=2/3
    5·1 answer
  • Observa las siguientes imágenes formadas por círculos:
    5·1 answer
  • Find the inverse y=-1+1/5x pleaseee help
    6·1 answer
  • Rewrite in simplest terms: -4(5v – 3v – 6) – 9v
    10·2 answers
  • Hector's parents started saving money for his college education when Hector was six. If they save $400 per month at a credit uni
    13·1 answer
  • Exponential functions have a variable as an exponent.<br> Which of these functions are exponential?
    8·1 answer
  • The three inside angles (A B and C) of a right angled triangle are in the ratio 7:18:11
    13·1 answer
  • Bonjour à tous, pouvez vous m'aider à trouver la réponse pour cette "question ouverte" svp?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!