4 years ago

Find all solutions to the equation. cos^2 x + 2 cos x + 1 = 0

Mathematics

1 answer:

Helen [10]4 years ago

7 0

Answer:

x = $\pi +2\pi n$

Step-by-step explanation:

Radian: $\pi + 2 \pi n$

Degree: x = 180 degree, 360 degree

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A company maintains a fleet of vehicles that consist of both cars and trucks. The miles per gallon realized in the cars follows

sergeinik [125]

Answer:

ii, the mpg for the trucks.

Step-by-step explanation:

A larger standard deviation means more variablilty

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2 years ago

An item costs $430 before tax, and the sales tax is $12.90. Find the sales tax rate. Write your answer a a percentage

Temka [501]

Answer: The sales tax rate is 3%.

Step-by-step explanation: $12.90 is 3% of $430.

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3 years ago

WOULD YOU RATHER use a coupon for $20 off 10

tatiyna

Answer:

$20 off 10

Step-by-step explanation

it really depends on how much there is in your order, but if its more than 10 i would use $20 off 10 because its less stuff so the prices would go lower.. if that makes any sense

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4 years ago

Which of the following is NOT true? Question 19 options: (3x2y5)3=27x6y15 (1000x12y20z−3)0=1 52‾‾√3=523 42×43= 165

bixtya [17]

Answer:

Step-by-step explanation:

Lets try to simplify each to check which one is incorrect so it will be NOT true

first one is :

distribute the exponent so :

$(3x^2y^5)^3 =3^3x^{2*3}y^{5*3}$

$27x^6y^{15}$ CORRECT

Second one is :

$(1000x^{12}y^{20}z^{-30})^{0} =1$

CORRECT because anything raised to exponent 0 is 1 .

Last one is :

$4^2 *4^3 = 4^{2+3}\\=4^{6}\\=(4)^{2*3}\\=16^{3}$

so Last is<em> INCORRECT</em>

5 0

3 years ago

Need help ASAP!!!!!!!!!!

tankabanditka [31]

Answer:

y=-3x+10

here you go lmk if u need an explanation

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3 years ago