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3 years ago

-7<-2; add 9 to both sides the resulting inequality is

Mathematics

1 answer:

Nookie1986 [14]3 years ago

8 0

Answer:

2<7

Step-by-step explanation:

-7<=-2

-7+9<-2+9

2<7

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4 years ago

What is 7x+8y is less than or equal to 200???

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Step-by-step explanation:

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2 years ago

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3 years ago

Find the area of the sector.

makvit [3.9K]

Answer:

392*pi/3

Step-by-step explanation:

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3 years ago

What is the period for the function y = -4 cos (5x +3)? (4.3)

BlackZzzverrR [31]

The periodicity of function is $\frac{2 \pi}{5}$

Solution:

Given that we have to find the period of function

Given function is:

$y = -4 + cos(5x+3)$

Use the below formula:

$\mathrm{Periodicity\:of\:}a\cdot \cos \left(bx\:+\:c\right)\:+\:d=\frac{\mathrm{periodicity\:of}\:\cos \left(x\right)}{|b|}$

Thus,

$Peridocity\ of\ cos(5x + 3) - 4 = \frac{\text{periodicity of cos(x)}}{5}$

Now find the periodicity of cos(x)

We know that,

periodicity of cos(x) = $2 \pi$

Therefore,

$Peridocity\ of\ cos(5x + 3) - 4 = \frac{2 \pi}{5}$

Thus the periodicity of function is $\frac{2 \pi}{5}$

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3 years ago