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Natalka [10]
2 years ago
14

Solve for x and round please

Mathematics
2 answers:
bija089 [108]2 years ago
6 0

Answer:

9.6

Step-by-step explanation:

6.4/x = sin42

x = 6.4/sin42

x = 9.56

butalik [34]2 years ago
3 0

Answer:

\displaystyle 9,6

Step-by-step explanation:

\displaystyle \frac{x}{6,4} = csc\:42 \hookrightarrow 6,4cot\:42 = x \hookrightarrow 9,5646499191... = x \\ \\ 9,6 ≈ x

<em>OR</em>

\displaystyle \frac{6,4}{x} = sin\:42 \hookrightarrow xsin\:42 = 6,4 \hookrightarrow \frac{6,4}{sin\:47} = x \hookrightarrow 9,5646499191... = x \\ \\ 9,6 ≈ x

Information on trigonometric ratios

\displaystyle \frac{OPPOCITE}{HYPOTENUSE} = sin\:θ \\ \frac{ADJACENT}{HYPOTENUSE} = cos\:θ \\ \frac{OPPOCITE}{ADJACENT} = tan\:θ \\ \frac{HYPOTENUSE}{ADJACENT} = sec\:θ \\ \frac{HYPOTENUSE}{OPPOCITE} = csc\:θ \\ \frac{ADJACENT}{OPPOCITE} = cot\:θ

I am joyous to assist you at any time.

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How much TV do college students watch? A survey of 361 students recorded the number of hours of television they watched per week
Darina [25.2K]

Answer: 90% confidence interval would be (6.022,6.986).

Step-by-step explanation:

Since we have given that

Number of students = 361

Sample mean = 6.504

Sample standard deviation = 5.584

Standard error of the mean = 0.294

At 90% confidence level,

So, α = 0.01

So, z = 1.64

Margin of error is given by

z\times \text{Standard error}\\\\=1.64\times 0.294\\\\=0.48216

So, Lower limit would be

\bar{x}-0.482\\\\=6.504-0.482\\\\=6.022

Upper limit would be

\bar{x}+0.482\\\\=6.504+0.482\\\\=6.986

So, 90% confidence interval would be (6.022,6.986).

3 0
3 years ago
How much will 28 pencils cost if 7 pencils cost $1.82?
Ira Lisetskai [31]

Answer:

7.28

Step-by-step explanation:

1.82*4= 4+3.20+.08= 7.28

5 0
3 years ago
Read 2 more answers
To subtract 136-87 using mental math Aaron subtract 136-90and go 46 what should he do next?
atroni [7]

Answer:

Subtract 3 from it to get 43

Step-by-step explanation:

6 0
3 years ago
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A single-engine airplane is heading due east at a constant speed of 150 mi / h. There is a 30 mi / h cross wind blowing north. W
kogti [31]
Let
F1------------------------- > airplane speed <span>150 mi / h East
F2-------------------------- > </span>wind  speed <span>30 mi / h North

calculate the resultant force R
F1x=150    F1y=0      F2x= 0  F2y=30
Rx=F1x+F2x------------- >150+0 ---------------- >Rx=150
</span>Ry=F1y+F2y------------- >0+30 ---------------- >Rx=30
║R║=√150² 30²=√23400=152.97----- >153 mi/h
tan(theta)=Ry/Rx=30/150=0.20
arctan (0.20)=11.31 degrees-----------11.3 degrees

 the answer is
actual speed 153 mi/h and direction 11.3 degrees North-East  (I Quadrant)
7 0
3 years ago
I need the volume and surface area
MatroZZZ [7]

Answer:

Volume: V≈113.1

Step-by-step explanation:

Solved for sphere

Shape: Sphere

Formula: V=43πr3

Volume: V≈113.1

1: R is the radius meaning calculate the radius to find the volume of a sphere.

2: The correct answer is below for this question.

Answer: V≈113.1

<em><u>Hope this helps.</u></em>

5 0
3 years ago
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