3 years ago

Multiply 4 11 6 20 66 19 17 66 20 17

Mathematics

2 answers:

schepotkina [342]3 years ago

7 0

That’s weird for the answer i got 10/33

erik [133]3 years ago

4 0

I got the same answer. It’s 10/33

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The law of Cosines Is......

iogann1982 [59]

Answer: $\Large\boxed{C.~21}$

Step-by-step explanation:

The goal of the question

Find the value of 2abcosC

Given information

a = 4

b = 3

c = 2

Given formula (Law of Cosine)

$c^2=a^2+b^2-2abcosC$

Substitute values into the formula (Leave 2abcosC as it is)

$(2)^2=(4)^2+(3)^2-2abcosC$

Simplify the exponents

$4=16+9-2abcosC$

Simplify by addition

$4=25-2abcosC$

Add 2abcosC on both sides

$4+2abcosC=25-2abcosC+2abcosC$

$4+2abcosC=25$

Subtract 4 on both sides

$4 + 2abcosC-4=25-4$

$\Large\boxed{2abcosC=21}$

Hope this helps!! :)

Please let me know if you have any questions

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2 years ago

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9x - 3y = -2 -3x + y = -3

morpeh [17]

Multiply 2nd equation by 3 and add to first
9x-3y=-2
-9x+3y=-9 +
0x+0y=-7

0=-7
false
no solution
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6 0

3 years ago

Jaleesa bought a movie online. She paid $19.00 plus tax. The sales tax was 9%. How much did she pay in sales tax?

boyakko [2]

Answer: she paid $1.71 in sales tax.

Step-by-step explanation:

Find 9 percent of 19 to find the sale tax.

9% of 19 =

0.09 * 19 = 1.71

This means she paid $1.71 in sales tax.

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3 years ago

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40g+300 is less than or equal to 5000
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3 years ago

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GuDViN [60]

The numerical form of this worded expression is:

10(1/2n + 6)=8

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4 years ago