2 years ago

What's the tool that helps you create a perfect circle caleed?

Mathematics

1 answer:

ExtremeBDS [4]2 years ago

4 0

You can draw perfect circles with
a compass tool

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Solve for the value of X in 9^x+4(3^x+1)+27=0

worty [1.4K]

Answer:

No solutions

Step-by-step explanation:

$9^x + 4(3^x + 1) + 27 = 0\\3^{2x} + 4 \cdot 3^x + 31 = 0$

Substitute 3^x with t and we get.

$t^2 + 4t + 31 = 0\\\triangle = 16 - 4 \cdot 31 = -108 < 0 => t_{12} \notin R => x \notin R$

3 0

3 years ago

A store has 30 boxes of melons each box holds 4 bags. Each bag holds 2 melons. What is the total number of melons in the store

zlopas [31]

240 hope that helped

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2 years ago

Prove that : sin^4(2x)=3/8-1/2cos4x+1/8cos8x<br> Someone plzz help!!!

Gekata [30.6K]

Sin^2 (2x) = (1 - cos(4x))/2
---> sin^4 (2x) = (1/4)(1 - cos4x)^2 = (1/4)(1 - 2cos4x + cos^2 (4x)) and replace cos^2(4x) by (1/2)(1+cos(8x)) --->answer

7 0

2 years ago

Step by step explanation thanks

ratelena [41]

Answer:

75%

Step-by-step explanation:

$\frac{90}{120}*100=\frac{9}{12}*100=\frac{3}{4}*100=3*25=75%$ %

7 0

2 years ago

1.2x-4y=28 solve for y

Gnesinka [82]

2x -4y= 28
⇒ -4y= 28 -2x
⇒ y= (28 -2x)/ (-4)
⇒ y= 28/(-4) -(2x)/ (-4)
⇒ y= -7 + 1/2x

The final answer is y= -7 + 1/2x~

4 0

2 years ago