3 years ago

What are the proofs

Mathematics

1 answer:

guajiro [1.7K]3 years ago

6 0

; 112 jumps ; 128 jumps ; 151 jumps ; 172 jumps

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Kai has 130 beads to make necklaces. there or 100 blue beads. there are 20 red beads. what fraction of the beads are blue?what f

Dominik [7]

100/130 = b
20/130 = r

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3 years ago

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1 + 5sin^2x= 7sin^2x solve trig equation. Can you show me how to solve this trig equation?

pantera1 [17]

Answer: $x = \frac{\pi}{4}\pm k\frac{\pi}{2}\,\,\,\,\,\,k=\{0,1,2,...\}$

Step by step:

$1 + 5\sin^2x= 7\sin^2x\\\sin^2 x\rightarrow z\\1 + 5z = 7z\\2z = 1\\z = \frac{1}{2}\implies \sin^2 x = \frac{1}{2}\\|\sin x| = \frac{1}{\sqrt{2}}\\\sin x = \pm\frac{1}{\sqrt{2}}=\pm\frac{\sqrt{2}}{2}\\\implies x = \frac{\pi}{4}\pm k\frac{\pi}{2}\,\,\,\,\,\,k=\{0,1,2,...\}$

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3 years ago

M∠IJK=155° and m∠ZJK=35°. Find m/∠IJZ

PtichkaEL [24]

120° because 155-35=120 since IJZ is inside the IJK so you would have to subtract the ZJK from the IJZ.

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2 years ago

Simplify (2/3)^-1 Show your work!

lawyer [7]

Answer:

3/2

Step-by-step explanation:

Apply exponent rule: a^-1 = 1/a

(2/3)^1 = 1/2/3

Apply the fraction rule: 1/a/c = c/b

3/2

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Help I need the answers immediately

Vikki [24]

Answer:

linear pair

Step-by-step explanation:

the sum of linear pair angles is 180 degree.

so if we apply 16 in place of x in both equations and add them we get 180

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