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DIA [1.3K]
3 years ago
6

Find the value of x. Round to the nearest tenth.

Mathematics
2 answers:
Sever21 [200]3 years ago
6 0

Answer:

cos\Theta =\frac{adj}{hyp}

cos 32=\frac{12}{x}

x=12/cos32

=14.2

OAmalOHopeO

Maru [420]3 years ago
5 0

Answer:

\huge\boxed{x=14.2}

Step-by-step explanation:

Use a cosine:

cosine=\dfrac{adjacent}{hypotenuse}

We have:

adjacent=12\\hupotenuse=x\\measure\ of\ angle=32^o

Look at the picture or use the calculator.

\cos32^o=0.8480

Substitute:

0.848=\dfrac{12}{x}\\\\\dfrac{0.848}{1}=\dfrac{12}{x}

cross multiple

0.848x=12

divide both sides by 0.848

x=\dfrac{12}{0.848}\\\\x=14.2

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To compare two products such as colas, a random sample is selected to taste two types of colas (A and B). Each selected subject
Nadya [2.5K]

Answer: The sample size would be needed = 385

Step-by-step explanation:

Let p be the prior population proportion.

Margin of error = E

When not estimate of p is given , the formula to calculate the minimum sample size <em>n</em> = 0.25(\dfrac{z^*}{E})^2 , where z* = critical value for given confidence interval.

Here z* for 95% confidence level is 1.96.

E=5%=0.05

Then n=0.25(\dfrac{1.96}{0.05})^2\approx385

Hence, the sample size would be needed = 385

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3 years ago
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Step-by-step explanation:

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3 years ago
If you solve an equation and get an answer like x=-4, how many solutions does it have?
Furkat [3]
The answer would be it has one solution
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3 years ago
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An iPod sold for $300, which was 200% of the actual cost. What was the actual cost?
fgiga [73]

Answer:

If $300 is 200%, half of that would be 100%. Thus, $150 is the correct answer.

Step-by-step explanation:

3 0
3 years ago
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Answer:

6. x = 28 degrees

7.  z = 1.6 cm

Step-by-step explanation:

6.  

Notice that you can use the property that tells us that the addition of all internal angles of a triangle must give 180 degrees, then you write the following equation:

50 + 69 + (2 x +5) = 180

combine like terms:

119 + 2 x + 5 = 180

124 + 2 x = 180

subtract 124 from both sides:

2 x = 56

divide by 2 both sides:

x = 56 / 2

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Problem 7.

If the two triangles are congruent, then the side MN must equal side RS.

Since MN  measure 1,8 cm, then RS must also measure 1.8 cm

and we can write the equation:

1.8 = 3 z - 3

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1.8 + 3 = 3 z

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dividing both sides by 3:

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3 years ago
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