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dolphi86 [110]
3 years ago
9

What is the greatest common factor (GCF) of 45 and 63?

Mathematics
1 answer:
Tju [1.3M]3 years ago
3 0

Answer:GCF of 45 and 63 is 9.

Step-by-step explanation:

factors of 45 are 1,3,5,9,15,45

factors  of 63 are 1,3,7,9,21,63

so the greatest common factor or GCF of 45 and 63 is 9

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Question 10 Express 40 as a product of prime factors​
Step2247 [10]

Answer:

2 x 2 x 2 x 5

Step-by-step explanation:

The first few prime numbers:  {2, 3, 5, 7, 11, 13, 17, 19}

One way to start is to divide by the first prime until you can't do that any more, then try the next prime and so on until all the numbers in your list are prime.

40 = 2(20)  divide 20 by 2 again

40 = 2(2)(10)  divide 10 by 2 again

40 = 2(2)(2)(5) stop--all factors are prime.

5 0
3 years ago
What is 8/40 in simplest form?
tensa zangetsu [6.8K]
Divide 8 by 8= 1
divide 40 by 8=5
1/5
3 0
3 years ago
Read 2 more answers
If X || Y and Y || Z, then _____<br><br> A) A || B<br> B) X || Z<br> C) X⊥A<br> D) A⊥Z
iris [78.8K]

Answer:

B) X || Z

Step-by-step explanation:

Hope it helps you in your learning process.

5 0
3 years ago
Help please! I don’t know how to do this.
Akimi4 [234]
... I don’t either... hold on lemme try I will be back soon I’m doing the problem
5 0
3 years ago
How to solve a one step equation of R+3= -6 1/2 <br> please show all the work
IgorC [24]
Solve for R:
R + 3 = -(1/2 + 6)
Put 1/2 + 6 over the common denominator 2. 1/2 + 6 = (2×6)/2 + 1/2:
R + 3 = -(2×6)/2 + 1/2
2×6 = 12:
R + 3 = -(12/2 + 1/2)
12/2 + 1/2 = (12 + 1)/2:
R + 3 = -(12 + 1)/2
12 + 1 = 13:
R + 3 = -13/2
Subtract 3 from both sides:
R + (3 - 3) = -13/2 - 3
3 - 3 = 0:
R = -13/2 - 3
Put -13/2 - 3 over the common denominator 2. -13/2 - 3 = (-13)/2 + (2 (-3))/2:
R = (-13)/2 - (3×2)/2
2 (-3) = -6:
R = (-6)/2 - 13/2
(-13)/2 - 6/2 = (-13 - 6)/2:
R = (-13 - 6)/2
-13 - 6 = -19:
Answer:  R = (-19)/2
6 0
3 years ago
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