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AVprozaik [17]
2 years ago
8

I'm gonna cry I don't get this​

Mathematics
2 answers:
snow_tiger [21]2 years ago
6 0

Answer:

d=14

Step-by-step explanation:

Divide both sides by the numeric factor on the left side, then solve.

so the answer is d=14

Vsevolod [243]2 years ago
5 0

Answer:

d = 14

Step-by-step explanation:

So what we need to do is divide each term in 3(d+8) = 66 by 3

3(d+8) / 3 = 66 / 3

this cancels the 3 on the left side and then we are left with

d+8 = 22

now we need to get D by itself by subtracting 8 by both sides.

d+8-8 = 22 - 8

D = 14

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Find the sum.<br> 48 + 45 + 42+...+(-81) + (-84)
Agata [3.3K]

Answer:

look below

Step-by-step explanation:

i dont know what that +... thing is

but when youre adding the negatives youre really just adding that number so this is just

48+45+42+81+84

45+42 is 87

now we have

48 + 87 + 81 + 84

87 + 81 is 168

48 + 84 is 132

now we have

168 + 132 and that is exactly 300

again dont know what the ... is so cant help you there

4 0
2 years ago
Read 2 more answers
A volume a cylinder: V = 1\3 pi [tex] x^{2} h solve for h PLZ HELP!!!
DedPeter [7]

Volume   =   π • r² • height

Height = Volume / (PI * radius^2)

Source www.1728.com/diamform.htm


7 0
3 years ago
Calculate the mean, the variance, and the standard deviation of the following discrete probability distribution. (Negative value
asambeis [7]
<h2>Answer:</h2>

Mean = 24.47

Variance = 108.31

Standard deviation = 10.41

<h2>Step-by-step explanation:</h2>

The probability distribution table has been attached to this response.

<em>(1) To calculate the mean (m)</em>

(a) First multiply each of the values of x by their corresponding probability values.

This is shown in the third column of the table.

(b) The sum of the results in the third column gives the mean of the distribution. i.e

m = ∑xP(x) = 11.52 + 9.36 + 3.15 + 0.44

m = 24.47

<em>(2) To calculate the variance </em> <em>(σ²).</em>

(a) First find the square of the difference between the values of x and the mean (m) calculated in (1b) above. i.e

(x - m)²

The result is shown in the fourth column of the table.

(b) Next, multiply each of the results in the fourth column (x - m)², by their corresponding probability values P(X = x). i.e

(x - m)²(P(X = x))

The result is shown in the fifth column of the table.

(c) Now find the variance (σ²) which is the sum of the results in the fifth column. i.e

σ² = ∑(x - m)²(P(X = x)) = 42.5411 + 0.8427 + 18.8330 + 46.0923

σ² = 108.3091

σ² = 108.31      [to 2 decimal places]

<em>(3) To calculate the standard deviation (σ)</em>

The standard deviation is the square root of the variance of the distribution. Calculate this by finding the square root of the result in (2c) above.

σ = √σ²

σ = \sqrt{108.31}

σ = 10.4072

σ = 10.41        [to 2 decimal places]

3 0
2 years ago
What is the volume, in cubic in, of a rectangular prism with a height of 19in, a width of 17in, and length of 18in?
aleksandrvk [35]

Answer:

5814

Step-by-step explanation:

V= width x height x length

V=17·19·18=5814

3 0
3 years ago
Lucy paid $200 for a new guitar and is paying $20 per hour for lessons. Write an expression to represent the total amount she wi
sergij07 [2.7K]

Answer:

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Step-by-step explanation:

7 0
3 years ago
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