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zhannawk [14.2K]

3 years ago

13

What is the GCF for 21

1 answer:

frozen [14]3 years ago

7 0

Greatest common factor (GCF) of 12 and 21 is 3. We will now calculate the prime factors of 12 and 21, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12 and 21.

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PLEASE HELP ME ASAP

goblinko [34]

Answer:

20.04 units

Step-by-step explanation:

The diagram shows right triangle ABC. Use the definition of the cosine:

$\cos \angle C=\dfrac{\text{Adjacent leg}}{\text{Hypotenuse}}\\ \\\cos \angle C=\dfrac{BC}{AC}\\ \\\cos 51^{\circ}=\dfrac{BC}{27}\\ \\BC=27\cdot \cos 51^{\circ}\\ \\BC\approx 20.04\ units$

3 0

4 years ago

Solve for m. (-11/6) + m = -2/9

3241004551 [841]

Answer:

m = $\frac{29}{18}$

Step-by-step explanation:

=> (-11/6) + m = -2/9

Adding 11/6 to both sides

=> m = $-\frac{2}{9} + \frac{11}{6}$

LCM = 18

=> m = $\frac{-4+33}{18}$

=> m = $\frac{29}{18}$

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Step-by-step explanation:

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dimaraw [331]

Answer:

SAS

Step-by-step explanation:

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