What number is a factor of 20 but not a multiple of 5

Mathematics

2 answers:

trasher [3.6K]2 years ago

7 0

A factor of 20 but not a multiple of 5 would probably be 4

Musya8 [376]2 years ago

7 0

Answer:

2 and 4.

Step-by-step explanation:

20 = 10*2

20 = 5*4

In the first example 2 is a factor of 20 but 2 is not a multiple of 5.

In the second example 4 is a factor of 20 but 4 is not a multiple of 5.

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Please help! 30 points!

Rashid [163]

Answer: $64.2^{\circ}$

Step-by-step explanation:

According to the cosine rule

$\cos C=\dfrac{a^2+b^2-c^2}{2ab}$

Here, $a=83, b=111, c=165,\ C=180^{\circ}-\theta$

Putting values

$\Rightarrow \cos (180^{\circ}-\theta)=\dfrac{83^2+111^2-165^2}{2\times 83\times 111}\\\\\Rightarrow \cos(180^{\circ}-\theta)=\dfrac{6889+12321-27225}{18426}\\\\\Rightarrow \cos(180^{\circ}-\theta)=\dfrac{-8015}{18426}=-0.4349\\\\\Rightarrow 180^{\circ}-\theta=\cos^{-1}(-0.4349)=115.77^{\circ}\\\Rightarrow \theta=64.23\approx 64.2^{\circ}$