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erica [24]
3 years ago
9

*7.NS.1: Apply and extend previous understandings of addition and subtraction to add and subtract rational numbers;

Mathematics
1 answer:
aleksandrvk [35]3 years ago
5 0

Answer:

////////////////////////////:

Step-by-step explanation:

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Find the sum of all interior angles of a polygon with 9​
marin [14]

Answer:

1260

Step-by-step explanation:

polygon having sides is 9

so sum will be 1260

7 0
3 years ago
0.002 inches
vladimir2022 [97]

Answer:

0.0202

0.022

0.02

0.002

Step-by-step explanation: I am 5 million iq brainlist pls

3 0
2 years ago
The U.S. Energy Information Administration claimed that U.S. residential customers used an average of 10,608 kilowatt hours (kWh
Marat540 [252]

Answer:

The calculated value Z = 1.4460 < 1.96 at 0.05 level of significance.

The null hypothesis is accepted

A local power company believes that residents in their area use more electricity on average than EIA's reported average

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given that the mean of the Population = 10,608 kWh of electricity this year.

Given that the size of the sample n = 187

Given that mean of sample x⁻ = 10737 kWh

The Standard deviation of the Population = 1220kWh

Level of significance = 0.05

The critical value (Z₀.₀₅)= 1.96

<u><em>Step(ii):-</em></u>

Null Hypothesis: H₀:μ > 10608 kWh

Alternative Hypothesis: H₁: μ < 10608kWh

Test statistic

                 Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }

                Z = \frac{10737- 10608 }{\frac{1220}{\sqrt{187} } }

                Z = 1.4460

<u>Final answer:-</u>

The calculated value Z = 1.4460 < 1.96 at 0.05 level of significance.

The null hypothesis is accepted

A local power company believes that residents in their area use more electricity on average than EIA's reported average.

3 0
3 years ago
HELPPPPPPPLLL
love history [14]

Answer:

16

Step-by-step explanation:

4:2

2x4 = 8

4x4=16

7 0
2 years ago
What are the zeros of the function?<br> f(x) = 2x^3 – x^2 – 6x
Mars2501 [29]

i think - 3/2?.. idk

8 0
3 years ago
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