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elena-14-01-66 [18.8K]
3 years ago
13

Help please k/2+9=30

Mathematics
1 answer:
Dafna11 [192]3 years ago
5 0
\frac{k}{2}+9=30\ \ \ | subtract\ 9\\\\
\frac{k}{2}=21\ \ \ | multiply\ by\ 2\\\\
k=42\\\\Solution\ is\ 42.
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Two types of barrel units were in use in the 1920s in the united states. the apple barrel had a legally set volume of 7056 cubic
r-ruslan [8.4K]
1.) 7,056 * 41 = 289,296 (apple barrel volume * no. of barrels sold)
     5,826 * 41 = 238,866 (cranberry barrel volume * no. of barrels sold)

2.) Subtract cranberry barrel volume from apple barrel volume
    289,296 - 238,866 = 50,430 cubic inches

3.) Convert 50,430 cubic inches to liters
     50,430 = 826.39 liters or 826.40 liters (rounded off)

4.) Therefore, 826.40 liters is the discrepancy in the shipment volume.
3 0
3 years ago
A man enters a tall tower, needing to know its height. he notes that a long pendulum extends from the ceiling almost to the floo
myrzilka [38]
A man enters a tall tower, needing to know its hieght. He notes that a long pendulum extends from the ceiling almost tothe floor and that its period is 15.5s. (a) How tall isthe tower? (b) If this pendulum is taken to the Moon,where the free-fall acceleration is 1.67m/s2, what isthe period there?T=15.5s(a) L=T2g/4π<span>2</span>
3 0
3 years ago
Write an equation of the line that passes through the point (3,0) and<br> has the slope, m = -2.
kenny6666 [7]
The equation of a line is Y=mx+b
You know that the slope is -2 and the slope is 'm' so sub it into the equation.
Y=-2x+b
To have an equation of a line you need the 'b' or 'y' intercept and the slope.
This means you have to find the 'b' because you already know the slope which is -2. To find the 'b' you have to sub in the coordinates and then solve for 'b'
Y=-2x+b
(x,y)
(3,0)
0=-2(3)+b
0=-6+b
6=b
Therefore the equation of the line is Y=-2x+6 <span />
6 0
3 years ago
An ice cream cone has a radius of 7 cm and a height of 8 cm
zmey [24]

Answer:

TSA of ice cream cone = 330 cm^2

Step-by-step explanation:

Total Surface Area of ice cream cone = pie r( r+h )

22/7 * 7 (7+8)

22 ( 7+8)

22*15

= 330 cm. square

4 0
2 years ago
"is it appropriate to use the normal approximation for the sampling distribution of"
Katyanochek1 [597]

Answer: Normal approximation can be used for discrete sampling distributions, such as Binomial distribution and Poisson distribution if certain conditions are met.

Step-by-step explanation: We will give conditions under which the Binomial and Poisson distribitions, which are discrete, can be approximated by the Normal distribution. This procedure is called normal approximation.

1. Binomial distribution: Let the sampling distribution be the binomial distribution B(n,p), where n is the number of trials and p is the probability of success. It can be approximated by the Normal distribution with the mean of np and the variance of np(1-p), denoted by N(np,np(1-p)) if the following condition is met:

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2. Poisson distribution: Let the sampling distribution be the Poisson distribution P(\lambda) where \lambda is its mean. It can be approximated by the Normal distribution with the mean \lambda and the variance \lambda, denoted by N(\lambda,\lambda) when \lambda is large enough, say \lambda>1000 (however, different sources may give different lower value for \lambda but the greater it is, the better the approximation).

5 0
3 years ago
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