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3 years ago

Plz Hurry This Is Timed

Mathematics

2 answers:

makkiz [27]3 years ago

6 0

Answer:

2nd answer. it is because it is

Studentka2010 [4]3 years ago

5 0

Answer:

I believe the correct answer is the first one

Step-by-step explanation:

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Solve 4 cos2x-3 = 0 for all real values of x.

vichka [17]

4 cos² x - 3 = 0

4 cos² x = 3

cos² x = 3/4

cos x = ±(√3)/2

Fixing the squared cosine doesn't discriminate among quadrants. There's one in every quadrant

cos x = ± cos(π/6)

Let's do plus first. In general, cos x = cos a has solutions x = ±a + 2πk integer k

cos x = cos(π/6)

x = ±π/6 + 2πk

Minus next.

cos x = -cos(π/6)

cos x = cos(π - π/6)

cos x = cos(5π/6)

x = ±5π/6 + 2πk

We'll write all our solutions as

x = { -5π/6, -π/6, π/6, 5π/6 } + 2πk integer k

3 0

3 years ago

A person has an unknown element with a volume of 16 cubic inches and a weight of 4.13 pounds.

yawa3891 [41]

Answer is A.Zinc
If it not it still Zinc

7 0

2 years ago

49x2-14x+1 whats the answer

stepladder [879]

98 - 14x + 1
-14x + (98 + 1)
-14x + 99

Answer: -14x + 99.

8 0

3 years ago

Would $105.00 be correct? With the equation of Y=x(15)?

Vilka [71]

Answer:

$15.00h=N

$15.00(7)=N

$105.00=N

N=$105.00

So yes you are correct

Hope that helped

4 0

3 years ago

The football team has a total of 350 jerseys there are 154 medium-sized jerseys. What percent of the jerseys are medium-sized j

Lena [83]

Answer:

44% of the jerseys are medium sized.

Step-by-step explanation:

Total jerseys football team has = 350

Medium-sized jerseys = 154

We need to find what percent of the jerseys are medium-sized jerseys.

The formula used will be: $Percent\:of\:medium\:size\:jerseys=\frac{Medium\:size\:jerseys}{Total\:jersey}\times 100$

Putting values and finding percentage

$Percent\:of\:medium\:size\:jerseys=\frac{Medium\:size\:jerseys}{Total\:jersey}\times 100$

$Percent\:of\:medium\:size\:jerseys=\frac{154}{350}\times 100\\Percent\:of\:medium\:size\:jerseys=0.44\times 100\\Percent\:of\:medium\:size\:jerseys=44\%$

So, 44% of the jerseys are medium sized.

6 0

2 years ago

Plz Hurry This Is Timed​

Plz Hurry This Is Timed