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AlladinOne [14]

3 years ago

10

Need help pls ASAP 20 points

2 answers:

Assoli18 [71]3 years ago

7 0

미안하지만 나는 영어를 잘 몰라, 너는 한국어로 설명해 줄 수 있니?

malfutka [58]3 years ago

5 0

1. would be 8.75
2. would be 7.5
3. would be10

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Evaluate f(x)=-4x-5 for x = -1

Lubov Fominskaja [6]

F(x)=-4(-1)-5
f(x)=4-5
f(x)= -1
-1 is your answer

5 0

4 years ago

Two boats are equidistant from a lighthouse. The boats are 30 miles apart. The angle formed between the two boats, with the ligh

anastassius [24]

Using the Law of Sines (sina/A=sinb/B=sinc/C for any triangle)

(sin40)/30=(sin(180-40)/2)/d

d=(30sin70)/sin40

d≈43.857mi

d≈44 mi to the nearest whole mile...

3 0

4 years ago

Read 2 more answers

Need help in proving theorems of square please ASAP

lions [1.4K]

Answer:

The length of $\overline{JO}$ is 48.

Step-by-step explanation:

A square is a quadrilateral whose four sides have the same length and four internal angles have the same measure. The sum of measures of internal angles in quadrilaterals equals 360°. Let $m\,\angle BOJ = 4\cdot x -6$ and $BO = 2\cdot x - 8$ , the value of $x$ is:

$4\cdot (4\cdot x - 6) = 360^{\circ}$

$16\cdot x -24 = 360^{\circ}$

$16\cdot x = 384^{\circ}$

$x = 24$

And the length of $JO$ is:

$JO = BO = 2\cdot x - 8$

$JO = 40$

The length of $\overline{JO}$ is 48.

8 0

3 years ago

ꜱᴇᴇᴍꜱ ᴇᴀꜱʏ ᴊᴜꜱᴛ ᴄᴀɴ’ᴛ ꜰɪɢᴜʀᴇ ɪᴛ ᴏᴜᴛ

amid [387]

Answer:

123°

Step-by-step explanation:

2z +9 = x

y = z

2Z +9 + X + z +Y = 360

Substitute for Z

2Z +9 + 2z +9 + z + z = 360

6z +18 = 360

6Z = 342

Z = 57

2(57) +9 = 123

X = 123

3 0

3 years ago

Read 2 more answers

A red die and a blue die are rolled. You win or lose money depending on the sum of the values of the two dice. If the sum is 6 o

olganol [36]

Answer:

The expected value of X is $0.0833.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

For each dice, there are 6 possible outcomes(values from 1 to 6). So for 2 dices, there are $6^2 = 36$ desired outcomes.

Desired outcomes:

Sum 5: (1,4), (2,3), (3,2), (4,1).

Sum 6: (1,5),(2,4),(3,3),(4,2),(5,1)

Sum of 9: (3,6), (4,5), (5,4), (6,3)

Sum of 10: (4,6), (5,5), (6,4)

Sum of 12: (6,6)

Probabilities:

5 + 3 = 8 outcomes in which the sum is 6 or 10, that is, 8/36 probability of winning $4.

4 + 4 + 1 = 9 outcomes in which the 5, 9, or 12, that is, 9/36 probability of winning $1.

36 - (8 + 9) = 36 - 17 = 19 remaining outcomes, that is, 19/36 probability of losing $2.

What is the expected value of X?

Multiplication of each outcome by its probability. So

$E(X) = \frac{8}{36}*4 + \frac{9}{36}*1 - \frac{19}{36}*2 = \frac{8*4 + 9*1 - 19*2}{36} = \frac{32 + 9 - 38}{36} = \frac{3}{36} = 0.0833$

The expected value of X is $0.0833.

4 0

3 years ago