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vitfil [10]
2 years ago
13

What is the rule for a reflection across the y axis?

Mathematics
2 answers:
Ilya [14]2 years ago
6 0

Answer:

When you reflect a point across the y-axis, the y-coordinate remains the same, but the x-coordinate is transformed into its opposite (its sign is changed). ... the line y = x is the point (y, x). The reflection of the point (x,y) across. the line y = -x is the point (-y, -x).

Step-by-step explanation:

kogti [31]2 years ago
3 0
The rule for reflecting over the x- axis is negate the value of the y coordinate of each point but leave the c value the same
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The operations manager of a large production plant would like to estimate the mean amount of time a worker takes to assemble a n
xz_007 [3.2K]

Answer:

(15,595, 16,805)

Step-by-step explanation:

We have to:

m = 16.2, sd = 3.75, n = 150

m is the mean, sd is the standard deviation and n is the sample size.

the degree of freedom would be:

n - 1 = 150 - 1 = 149

df = 149

at 95% confidence level the t is:

alpha = 1 - 95% = 1 - 0.95 = 0.05

alpha / 2 = 0.05 / 2 = 0.025

now well for t alpha / 2 (0.025) and df (149) = t = 1,976

the margin of error = E = t * sd / (n ^ (1/2))

replacing:

E = 1,976 * 3.75 / (150 ^ (1/2))

E = 0.605

The 95% confidence interval estimate of the popilation mean is:

m - E <u <m + E

16.2 - 0.605 <u <16.2 + 0.605

15,595 <u <16,805

(15,595, 16,805)

5 0
3 years ago
3.5× 1.5× 2 into a mixed number
soldi70 [24.7K]

Answer: 10.5

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
On a piece of paper, use a protractor to construct a triangle with angle measures of 40° and 60?. What is the measure of the thi
Mars2501 [29]

Answer:

80°

Step-by-step explanation:

The sum of the angles of any triangle must add up to 180°.  If you form a triangle with an angle of 40° and another angle of 60°, the sum of those two angles is 40 + 60 = 100, so the measure of the third angle: 180 - 100 = 80°.

7 0
3 years ago
Write an equation for the line of fit for this data in the form y=mx+b where x is latitude and y is temperature.
notka56 [123]

Answer:

y = -x + 115

Step-by-step explanation:

Given

See attachment for graph

Required

The equation of best fit

First, we pick two corresponding points on the graph,

We have:

(x_1,y_1) =(55,60)

(x_2,y_2) =(45,70)

Calculate slope (m)

m = \frac{y_2 -y_1}{x_2 - x_1}

This gives:

m = \frac{70 - 60}{45 - 55}

m = \frac{10}{-10}

m = -1

The equation is the calculated using:

y = m(x - x_1) + y_1

This gives

y = -1(x - 55) + 60

Open bracket

y = -x + 55 + 60

y = -x + 115

5 0
2 years ago
&gt;<br> 40 cm out of 3.5m .
vovikov84 [41]

Answer:

Your answer is 11.42

Step-by-step explanation:

hope it helps

3 0
2 years ago
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