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
Degger [83]
3 years ago
10

Write the following proportion using colons. 7 is to 21 as 3 is to 9.

Mathematics
1 answer:
eduard3 years ago
8 0
This is how proportion is written 7:21=3:9. The colons are sign of division so it can be shown in the terms of fraction as 7/21=3/9 or 1/3=1/3
You might be interested in
Transpose v= u + t for t
LiRa [457]
Uv al dt or trace mcsorely
4 0
3 years ago
How to find the gradient of line segment joining each pair of points?
yarga [219]

Answer:

2

1/3

Step-by-step explanation:

A(xA, yA) = A (3,1)

B(xB,yB)=B(5,5)

the gradient=(yB-yA)/ (xB-xA)=(5-1)/(5-3)=4/2=2

C(4,7),D(10,9)

the gradient=(yD-yC)/(xD-xC)=(9-7)/(10-4)=2/6=1/3

6 0
3 years ago
Simplify: 3x(x^2 + 4x - 5)
Alina [70]

Answer:

3x^3+ 12x^2-15x

Step-by-step explanation:

First, you would have to distribute the 3x to everything in the parentheses. So you can write it out as (3x*x^2)+(3x*4x)+(3x*5). Solving this will give you the answer. We'll start off with (3x*x^2). Because we are MULTIPLYING, this part will equal to 3x^3. There is ONE x with 3x (think of it as 3x^1) and 2 x's in x^2, having a total of 3 x's, or x^3. Since the 3 is being multiplied as well, we can write it as 3x^3.

Second, we will solve (3x*4x). We are multiplying, so first we multiply 3*4 and then x*x. 3*4 is 12 and x*x is x^2.  There are 2 x's being mutipled by each other, so the x becomes squared. Now we finish and multiply 12*x^2 wich is 12x^2.

Lastly, we solve (3x*5). 3x is being multiplied 5 times which gives us 15x.

I hope this helped :)

3 0
3 years ago
8. The angle measures of a triangle are shown in the diagram. What is the value of x? A. 20 B. 15. C. 32 D. 40 I WILL GIVE BRAIN
AfilCa [17]

Answer:

D) 40

Step-by-step explanation:

triangles equal to 180 degrees

2x+10+x+50=180

3x+60=180

3x=120

x=40

7 0
1 year ago
Someone tell me how im breaking rules by posting a math question
amm1812
2(3)x2-(-2)?
if that’s the problem then it’s
12x2-(-2)
24+2 = 26!
5 0
3 years ago
Other questions:
  • Work out the area of a parallelogram of base 5m and height 3m
    15·1 answer
  • Can someone help me answer this please!!!
    12·1 answer
  • Change to form fraction 35.8 % Give way
    6·2 answers
  • Five friends attend a matinee movie and spend $8 per ticket. They also purchase a small bag of popcorn each. If the friends spen
    6·2 answers
  • A girl standing on a bridge throws a stone vertically downward with an initial velocity of 15.0 m/s into the river below. If the
    8·1 answer
  • Which ordered pairs are in the solution set of the system of linear inequalities?
    14·2 answers
  • Which is f(5) for the function -2x + 2x-3?
    14·2 answers
  • How many observations does this dot plot represent?
    12·2 answers
  • Multiplying polynomials answer to (a + 3)(a - 2)
    6·1 answer
  • 2=7(−2)+4 what is y?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!