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matrenka [14]
3 years ago
12

The coordinates of the point that is a reflection of Y(-4,-2) across the x-axis are what. The coordinates of the point that is r

eflection of y across the y-axis are what?
Mathematics
1 answer:
Andreas93 [3]3 years ago
6 0

Answer:

Step-by-step explanation:

across x axis:(-4,2)

across y-axis:(4,-2)

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Distributive Property is factors a common term by the items that are inside parenthesis.

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5 0
3 years ago
Comparing Linear Functions Written in Different Ways Compare the linear functions expressed below by data in a table and by an e
sergeinik [125]

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Both functions have the same slope.

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The table and the graph express an equivalent function.

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Need help with this....
Fed [463]

Answer:

m ∠S = 43°

Step-by-step explanation:

Exterior angle = Sum of opposite interior angles

(6x)° = 77° + (2x + 3)°

6x = 77 + 2x + 3

6x - 2x = 77 + 3

4x = 80

x = 20

m ∠S = (2x + 3)° = 2(20) + 3 = 40 + 3 = 43°

4 0
3 years ago
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Ellen is drawing two polygons. One of tue polygons has 3 more angles than the other. What shapes could she be drawing?
Nikitich [7]
You could have lots answers, but first, find the definition
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5 0
3 years ago
Read 2 more answers
A random sample of a specific brand of snack bar is tested for calorie count, with the following results: Assume the population
LenKa [72]

Answer:

The 95% confidence interval for the population mean (calorie count of the snacks bars) is (130.32, 161.68).

Step-by-step explanation:

<em>The question is incomplete:</em>

<em>"A random sample of a specific brand of snack bar is tested for calorie count, with the following results: </em><em>149, 145,140,160,149,153,131,134,153</em><em>. Assume the population standard deviation is </em><em>σ=24</em><em> and that the population is approximately normal. Construct a 95% confidence interval for the calorie count of the snack bars."</em>

We start by calculating the mean of the sample:

M=\dfrac{1}{9}\sum_{i=1}^{9}(149+145+140+160+149+153+131+134+153)\\\\\\ M=\dfrac{1314}{9}=146

We have to calculate a 95% confidence interval for the mean.

The population standard deviation is know and is σ=24.

The sample mean is M=146.

The sample size is N=9.

As σ is known, the standard error of the mean (σM) is calculated as: \sigma_M=\dfrac{\sigma}{\sqrt{N}}=\dfrac{24}{\sqrt{9}}=\dfrac{24}{3}=8

The z-value for a 95% confidence interval is z=1.96.

The margin of error (MOE) can be calculated as:

MOE=z\cdot \sigma_M=1.96 \cdot 8=15.68

Then, the lower and upper bounds of the confidence interval are:

LL=M-t \cdot s_M = 146-15.68=130.32\\\\UL=M+t \cdot s_M = 146+15.68=161.68

The 95% confidence interval for the population mean is (130.32, 161.68).

8 0
3 years ago
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