All categories

3 years ago

What is the HCF of 20 36 and 45??

Mathematics

2 answers:

tangare [24]3 years ago

6 0

20=1×2×2×5=1×4×5

36=1×2×2×9=1×4×9

45=1×3×3×5=1×9×5[/tex]

HCF=1

PIT_PIT [208]3 years ago

6 0

Answer:

Step-by-step explanation:

Common Factor of

20 = 2×2×5×1

36 = 2×2×3×3×1

45 = 3×3×5×1

By the following factors 1 is common

Therefore, HCF of 20 36 and 45 is 1

Hope it helps !

You might be interested in

Written as a simplified polynomial in standard form, what is the result when

grin007 [14]

The simplified form is 6x-6

5 0

3 years ago

Which equation is a function of x? O x=5 O x = {²+9 O x2 = 12 +16

kenny6666 [7]

1st one , your welcome

6 0

3 years ago

Kim took C dollars to the sporting goods store to spend on new cleats. If the cleats cost $53.62, which of the following express

Mila [183]

C-53.62 times however many she bought.

so c-(53.62x)

because you are taking how much money she spent and subracting it from how much she had

8 0

3 years ago

baherus [9]

Answer: see proof below

Step-by-step explanation:

Given: cos 330 = $\frac{\sqrt3}{2}$

Use the Double-Angle Identity: cos 2A = 2 cos² A - 1

$\text{Scratchwork:}\quad \bigg(\dfrac{\sqrt3 + 2}{2\sqrt2}\bigg)^2 = \dfrac{2\sqrt3 + 4}{8}$

Proof LHS → RHS:

LHS cos 165

Double-Angle: cos (2 · 165) = 2 cos² 165 - 1

⇒ cos 330 = 2 cos² 165 - 1

⇒ 2 cos² 165 = cos 330 + 1

Given: $2 \cos^2 165 = \dfrac{\sqrt3}{2} + 1$

$\rightarrow 2 \cos^2 165 = \dfrac{\sqrt3}{2} + \dfrac{2}{2}$

Divide by 2: $\cos^2 165 = \dfrac{\sqrt3+2}{4}$

$\rightarrow \cos^2 165 = \bigg(\dfrac{2}{2}\bigg)\dfrac{\sqrt3+2}{4}$

$\rightarrow \cos^2 165 = \dfrac{2\sqrt3+4}{8}$

Square root: $\sqrt{\cos^2 165} = \sqrt{\dfrac{4+2\sqrt3}{8}}$

Scratchwork: $\cos^2 165 = \bigg(\dfrac{\sqrt3+1}{2\sqrt2}\bigg)^2$

$\rightarrow \cos 165 = \pm \dfrac{\sqrt3+1}{2\sqrt2}$

Since cos 165 is in the 2nd Quadrant, the sign is NEGATIVE

$\rightarrow \cos 165 = - \dfrac{\sqrt3+1}{2\sqrt2}$

LHS = RHS $\checkmark$

4 0

3 years ago

Which expression is equivalent to 3(6m)+m? A)19m B)21m C)7m+3 D)18m+6m(with exponent 2)

julsineya [31]

A) 19m because 3 times 6 is 18 then you add m, which would be 19m

5 0

3 years ago