2 years ago

Find the GCF of 6 and 21 A. 126 B. 21 C. 3 D. None of the above

Mathematics

2 answers:

vladimir2022 [97]2 years ago

6 0

Answer:

C. 3

Step-by-step explanation:

$6 = 2 \times 3 \\ \\ 21 = 3 \times 7 \\ \\ \because \: common \: factor = 3 \\ \\ \therefore \: gcf \: of \: 6 \: and \: 21 = 3$

Marat540 [252]2 years ago

4 0

Answer:

C. 3

Step-by-step explanation:

Prime Factorization of 6: 2 × 3

Prime Factorization of 21: 3 × 7

Common Factors of 6 and 21: 3

So the greatest common factor of 6 and 21 is 3, that is, GCF of 6 and 21 is 3.

You might be interested in

Chris found some colorful leaves under one tree. Under another tree, he

Lynna [10]

Answer:

x+y-3+6

x+y+3

5 0

3 years ago

Can someone help me understand how to do this ?

Damm [24]

Do you know your trig ratios?

3 0

3 years ago

Solve this problem too

leonid [27]

Answer:

1.120

Step-by-step explanation:

going from small to large milli is 10^-3 L

3 0

2 years ago

Read 2 more answers

Please help! i was wondering how you would solve this question!

Anon25 [30]

Answer: C. 150 km²

<u>Step-by-step explanation:</u>

Use similar triangle proportion to find x:

$\dfrac{x}{4.5}=\dfrac{15.3+7.4}{7.4}\\\\\\x=\dfrac{4.5(22.7)}{7.4}\\\\\\x=13.8\\\\\text{Notice that x is the diameter of the circle}\implies r=\dfrac{13.8}{2}=6.9\\\\\\\text{Find the area of the circle using }A=\pi r^2\\A=\pi (6.9)^2\\\\.\ =\pi (47.6)\\\\.\ =149.6\\\\.\ \approx150$