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Lelu [443]
3 years ago
6

It’s my first time here I need help on this question

Mathematics
1 answer:
OverLord2011 [107]3 years ago
3 0

Answer:

.......v

Step-by-step explanation:

g

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3. Given that ∆RSV - ∆RTU, find the coordinates of S and the scale factor. R(0, 0) T(16,0) V(0, --6) U(0, -8) ​
MArishka [77]

Answer:

I'll give the scale factor and you can compute the coordinates of S

Step-by-step explanation:

the dilation if centered about the origin is the scale factor multiplied by each coordinate.

so looking at points V and U, the scale factor F is found by solving for F:

-6xF= -8

F=8/6=4/3

Now you can compute the coordinates for S

send a comment if you need help

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2 years ago
Simplify the following expression: 8x − 8y + 5z − 3x − 14y + 3z
RideAnS [48]
The answer is C. 5x - 22y + 8z
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3 years ago
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The distance between two cities is 600 miles. On a map, they are 4 inches apart. What is the scale of the map?
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1 inch = 150 miles (150*4=600)
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3 years ago
A random sample of 15 employees was selected. The average age in the sample was 31 years with a variance of 49 years. Assuming a
vova2212 [387]

Answer:

Assuming ages are normally distributed, the 98% confidence interval for the population average age is [26.3, 35.7].

Step-by-step explanation:

We have to construct a 98% confidence interval for the mean.

The information we have is:

- Sample mean: 31

- Variance: 49

- Sample size: 15

- The age is normally distributed.

We know that the degrees of freedom are

k=n-1=15-1=14

Then, the t-value for a 98% CI is t=2.625 (according to the t-table).

The standard deviation can be estimated from the variance as:

s=\sqrt {s^2}=\sqrt{49}=7

The margin of error is:

E=t_{14}*s/\sqrt{n}\\\\E=2.625*7/\sqrt{15}=18.375/3.873=4.7

Then, the CI can be constructed as:

M-t*s/\sqrt{n}\leq\mu\leq M+t*s/\sqrt{n}\\\\31-4.7\leq \mu \leq 31+4.7\\\\26.3\leq \mu \leq 35.7

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3 years ago
The price of gasoline is $2.27 per gallon and decreases at the rate of $0.03 every two months. Oil costs $0.45 per gallon and in
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You subtract 3 cents and add up how many months it is tiil  it reaches the same ammout as adding 5 cents and adding up six months every time
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