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
natima [27]
3 years ago
14

How do I know if two ratios are equal to make a proportion

Mathematics
1 answer:
AfilCa [17]3 years ago
3 0
One way to see if two ratios are proportional is to write them as fractions and then reduce them. If the reduced fractions are the same, your ratios are proportional. 
You might be interested in
Triangle ABC is similar to triangle DEF. Find the value of side length DE. Side length DE is cm.
Art [367]

Answer:

??? I can't see the picture

Step-by-step explanation:

5 0
2 years ago
Use the distance formula, show that the points (4,0), (2,1), and (-1,-5) form the vertices of a right triangle
mario62 [17]

Step-by-step explanation:

The distance formula between two points:

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

Substitute the coordinates of the points.

A(4,\ 0),\ B(2,\ 1),\ C(-1,\ -5)\\\\AB=\sqrt{(2-4)^2+(1-0)^2}=\sqrt{(-2)^2+1^2}=\sqrt{4+1}=\sqrt5\\\\AC=\sqrt{(-1-4)^2+(-5-0)^2}=\sqrt{(-5)^2+(-5)^2}=\sqrt{25+25}=\sqrt{50}\\\\BC=\sqrt{(-1-2)^2+(-5-1)^2}=\sqrt{(-3)^2+(-6)^2}=\sqrt{9+36}=\sqrt{45}

If a ≤ b < c are the sides of the right triangle, then

a² + b² = c²

\sqrt5

used (\sqrt{a})^2=a for a ≥ 0.

AB^2+BC^2=AC^2 therefore ΔABC is a right triangle.

6 0
3 years ago
If x is 5, then 6x = _____. 30 x 5 x 30
marin [14]

Answer:

6x = 30

Step-by-step explanation:

6x

Let x = 5

6*5 = 30

6x = 30

8 0
3 years ago
Read 2 more answers
if we increased one side of a square by 5 units and decreased the other by 3 units the area of the resulting rectangle would be
zvonat [6]

Answer:

18 units

Step-by-step explanation:

So let's list out the sides.

for the first square let's just call them x

for the second square then they would be x+5 and x-3

So let's write out their areas we will cal the area of the first one z

x*x = z

(x+5)*(x-3) = z+21

since z = x^2 we can set up the second equation as a quadratic.

(x+5)*(x-3) = x^2 + 21

x^2 - 3x + 5x - 15 = x^2 + 21

But look, the x^2s cancel out

2x - 15 = 21

2x = 36

x = 18

Test it out and see if it fits the description, And if you don't understand anything just let me know so I can explain more.  

3 0
3 years ago
PLSS HELP MEE
svetlana [45]

Answer:

May be answer od your question is =

7 0
3 years ago
Read 2 more answers
Other questions:
  • If 2/5 of a number is added to 1/3 of the same number ,the sum is 22. What is the number?
    15·2 answers
  • Does 3 to the 2 power plus 3 to the 3 power equal 3 to the 5 power? <br><br> Please Explain!
    10·1 answer
  • If A=p(1+rt), find the value of t if A=690, p=600 and r=.03
    7·1 answer
  • Am I correct??????????
    15·2 answers
  • A grandfather clock’s pendulum has a period of 4.5 seconds. What is its frequency? Round to the nearest hundredth.
    8·1 answer
  • A=3400+600+12000 equals what ?
    11·2 answers
  • Question 5(Multiple Choice Worth 5 points)
    5·1 answer
  • Which of the following best describes the equation below? y = -2x2 + 2 A. nonlinear B. both linear and nonlinear C. neither line
    14·1 answer
  • Find an expression which represents the sum of (-8x+7y)(−8x+7y) and (2x-2y)(2x−2y) in simplest terms.
    7·1 answer
  • Bestie help<br> Ok bestie thank you;)
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!