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4 years ago

does the points on an image line up with the point on the preimage in the point of dilation yes or no

Mathematics

1 answer:

Katyanochek1 [597]4 years ago

6 0

Answer:

no they'll be larger on a dilation image than a preimage

Step-by-step explanation:

hope this helped :)

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Now use technology and use the cumulative probability 0.95, the mean muequals10.5, and the standard deviation sigmaequals4.10

makvit [3.9K]

Answer:

18.5

Step-by-step explanation:

In the above question, we are given the following values

Cumulative probability ( confidence interval) = 0.95 = 95%

Mean = 10.5

Standard deviation = 4.10

We are asked to find the value of x.

To solve for x , we would be using the z score formula.

z score = (x-μ)/σ,

where x is the raw score,

μ is the population mean

σ is the population standard deviation

z score was not given in the question, but we have our cumulative probability as 95%(0.95).

Using the appropriate table,

the z score for 95% confidence is z = 1.96.

Therefore,

z score = (x-μ)/σ,

1.96 = x - 10.5/4.10

Cross multiply

1.96×4.10 = x - 10.5

x = (1.96 × 4.10) + 10.5

x = 8.036 + 10.5

x = 18.536

Approximately to 1 decimal place

x = 18.5

4 0

3 years ago

Sarah has a brother who is 5 years younger than herself and another brother who is 8 years younger than herself. She observes th

ELEN [110]

Answer:

Sarah is 13 years old

Step-by-step explanation:

Represent Sarah's age with S

Her first brother's age with F

Her second brother's age with B

So, we have:

From the first statement, we have:

$S - F = 5$ ---- (1)

From the second, we have:

$S - B = 8$ ---- (2)

The product of their ages is 40.

First, we make F the subject in (1) and B the subject in (2)

$F = S - 5$

$B = S - 8$

Their product is represented as follows:

$F * B = 40$

Substitute values for F and B

$(S - 5) * (S - 8)=40$

Open bracket

$S^2 - 5S -8S + 40 = 40$

$S^2 - 13S + 40 = 40$

Subtract 40 from both sides

$S^2 - 13S = 0$

Factorize:

$S(S - 13) = 0$

Split:

$S = 0$ or $S - 13 = 0$

But Sarah's age can't be 0 because she has two younger brothers.

So, we stick to

$S - 13 = 0$

Make S the subject

$S = 13$

<em>Hence, Sarah is 13 years old</em>

3 0

3 years ago

PLEASE HELP IM DESPERATE<br><br> ALL I NEED IS FOR SOMEONE TO ANSWER NUMBERS 7, 8, AND 9

andrezito [222]

Answer:

The answer to 9 is below

Step-by-step explanation:

2(L + W) = P

2(W + 5a - b) = 16a + 2b

2(W + 5a - b) = 2(8a + b)

W + 5a - b = 8a + b

W = 3a + 2b

8 0

3 years ago

3+x is greater than or equal to 7. Wats x??

Lapatulllka [165]

Answer:

x>=4

Step-by-step explanation:

So if 3+x>=7 that means

x has to be 4 or greater equal to

x>=4

7 0

3 years ago

Can anyone help me, please?

ololo11 [35]

Answer:

So first plot the points then move it the way ( x-3, y-4)

remember for the x axis you slide left to right and we know that left is negative so you would go left 3 times and for y you would go down 4 times do it for each point.

5 0

3 years ago

does the points on an image line up with the point on the preimage in the point of dilation yes or no​

does the points on an image line up with the point on the preimage in the point of dilation yes or no