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
igor_vitrenko [27]
3 years ago
10

Is 12/42=10/35 a true proportion

Mathematics
1 answer:
olya-2409 [2.1K]3 years ago
3 0
Yes, they both are 2/7

Proof: Left-hand side

Simplify the following:
12/42

The gcd of 12 and 42 is 6, so 12/42 = (6×2)/(6×7) = 6/6×2/7 = 2/7:
Answer:  2/7
Right-hand side:

Simplify the following:
10/35
The gcd of 10 and 35 is 5, so 10/35 = (5×2)/(5×7) = 5/5×2/7 = 2/7:
Answer:  2/7
You might be interested in
Which triangle could be drawn as is it described
nignag [31]

Answer:

you didnt add the attachment

6 0
3 years ago
Help! complete the table with the missing measurements. the perimeter is 40ft is that helps
Solnce55 [7]

therer sorry for the cropped pic btw lol

8 0
2 years ago
Find the equation of the circle with center at (-1, 3) and radius of 4.
Nataly [62]

Answer:

(x+1)^2 + (y-3)^2 = 16

Step-by-step explanation:

The equation of a circle is given by

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

Where (h,k) is the center and r is the radius

(x--1)^2 + (y-3)^2 = 4^2

(x+1)^2 + (y-3)^2 = 4^2

(x+1)^2 + (y-3)^2 = 16

7 0
3 years ago
The diameter of the moon is about 3500 km. Approximate the surface area of the moon using the formula for the surface area of a
horrorfan [7]

Answer:

3.8465 *10^7 square kilometers

Step-by-step explanation:

The surface area of a sphere can be found using the formula SA=4\pi r^2. Since the diameter is 3500 km then its radius is half of this. 3500 divided in two is 1,750 units. Substitute r=1,750.

SA=4\pi r^2\\SA = 4 \pi (1750)^2\\SA = 4 \pi *3,062,500\\SA =38,465,000

The surface area of the moon is about 38,465,000 square kilometers. Write this is scientific notation using base. 3.8465 *10^7

5 0
3 years ago
Express the following as a single number (2×1000)+(4×100)+(7×10)​
TiliK225 [7]

Answer:

2470

Step-by-step explanation:

yeah-ya .... right?

5 0
2 years ago
Read 2 more answers
Other questions:
  • M% of n is what percent of p?
    7·1 answer
  • Hello there ^ _ ^ <br><br> Can you help me please ? Please explain how you find the answer. Thanks!
    11·1 answer
  • Need help my teacher is going to be really mad
    5·1 answer
  • Simplify: 8x3 – 2x2 + x + 3x3 need answer asap
    8·1 answer
  • #37 I need help with. best answer plz???
    5·1 answer
  • What is 4X + 7y =14 in y=form
    6·1 answer
  • Help me and be brainiest
    11·1 answer
  • Determine x and y<br> Help me please
    15·1 answer
  • What is the area of the figure below?
    5·1 answer
  • Help!
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!