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
Mumz [18]
3 years ago
7

What is the LCM of 12,30 and 42

Mathematics
2 answers:
Hoochie [10]3 years ago
7 0

Answer:

420

Step-by-step explanation:

We can find the prime factors of each of the numbers first before finding their LCM.

12: <em>2</em> × 2 × <u>3</u>

30: <em>2</em> × <u>3</u> × 5

42: <em>2</em> × <u>3</u> × 7

To find the LCM, we need to see if they are any common prime factors between all three numbers. The common prime factors are <em>2</em> and <u>3</u>. Then, we multiply 2 and 3 with the remaining outstanding factors, which are 2, 5, and 7.

LCM: <em>2</em> × 2 × <u>3</u> × 5 × 7 = 420

Angelina_Jolie [31]3 years ago
4 0
the answer is 420.
factors of 12: 12,2,3
factors of 30: 2,3,5
factors of 42: 2,3,7
lcm = 2 squared x 3 x 5 x 7 (cause 2 occurs in the factors of 12,30,42)
ur answer is 420 :)
You might be interested in
Evaluate 0.3 + y/2 when y = 10 and z =5
Vladimir79 [104]

Answer:

0.3*10+10/5

PEMDAS (left to right)

3+2

5

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Un deposito de agua tiene forma de prisma rectangular con los lados de la base de 25 y 20 metros. Calcula la altura que pueda co
serious [3.7K]

Answer:

La altura del depósito para que pueda contener 1000 metros cúbicos de agua es 2 m.

Step-by-step explanation:

Para calcular el volumen de un prisma rectangular, es necesario multiplicar sus 3 dimensiones: longitud*ancho*altura. El volumen se expresa en unidades cúbicas.

En este caso, se conoce la longitud y el ancho, cuyos valores son 25 y 20 metros. A su vez, se sabe que el depósito de agua debe contener 1000 m³. Entonces, siendo:

Volumen= longitud*ancho*altura

Y reemplazando los valores se obtiene:

1000 m³= 25 m* 20 m* altura

Resolviendo:

1000 m³= 500 m²* altura

altura=\frac{1000 m^{3} }{500 m^{2} }

altura= 2 m

<u><em>La altura del depósito para que pueda contener 1000 metros cúbicos de agua es 2 m.</em></u>

7 0
3 years ago
Here are the scores that Jenna has
amid [387]

Answer:

the variance is 6.6

sry for not showing work

5 0
3 years ago
Can someone please help me find the answers to these two questions please?
Sliva [168]

Answer:

Question 13: x = 47°

Question 14: x = 67°

Step-by-step explanation:

Question 13:

add up all the known factors meaning 16, 27 and 90°, then subtract 180 from what you got from adding known factors

Question 14:

out out of all numbers meaning 19, 4 and 90°, then subtract 180 from what you got from adding all known factors

5 0
3 years ago
How to find the area of a rectangular prism?
patriot [66]
(base area)*h
oibgrawjk gr/
8 0
3 years ago
Other questions:
  • Simplify the ratio 9/12
    14·2 answers
  • Help me please seriously my work is due at 2pm
    15·1 answer
  • Can you help me solve this 2/3 (5 x 4) ÷ 3 + 6/7 =
    5·2 answers
  • Alex has 4 pizzas if he eats 2 how many will he have left
    8·2 answers
  • PLEASE IS FOR MY HOMEWORK
    13·1 answer
  • How do u solve it and what's the answer to this hard equation
    13·1 answer
  • PLEASE HELP ITS IMPORTANT omll
    15·1 answer
  • The attendance at a rugby game is as follows
    10·1 answer
  • A pizza with a diameter of 8 inches costs $10 and a pizza
    13·1 answer
  • What is the relation of 2 parallel lines in terms of their slope?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!