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nadya68 [22]
2 years ago
8

Help me find the answer!! 2-step equation

Mathematics
1 answer:
Vladimir79 [104]2 years ago
8 0

\looparrowright \sf3\leqslant \dfrac{y}{ - 5}  + 7

\looparrowright \sf3 - 7\leqslant \dfrac{y}{ - 5}

\looparrowright \sf - 4\leqslant \dfrac{y}{ - 5}

\looparrowright \sf - 4 \times  - 5\leqslant {y}

\looparrowright \sf 20\leqslant {y}

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How fast is a car going if it travels 15 meters in 5 seconds?​
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The car is traveling 3 meters second

Step-by-step explanation:

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Read 2 more answers
Question 6 (1.25 points)
Lisa [10]

Answer:

Test statistic Z= 1.713

The calculated Z- value =  1.7130 < 2.576 at 0.01 level of significance

Null hypothesis is accepted

There is no difference between the  mean annual salary of all lawyers in a city is  different from $110,000

Step-by-step explanation:

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

A researcher wants to test if the mean annual salary of all lawyers in a city is

different from $110,000

Mean of the Population  μ = $110,000

Sample size 'n' = 53

Mean of the sample x⁻ = $114,000.

standard deviation of the Population = $17,000,

Level of significance = 0.01

Null hypothesis :

There is no difference between the  mean annual salary of all lawyers in a city is  different from $110,000

H₀:  x⁻ =  μ

Alternative Hypothesis :  x⁻ ≠  μ

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

Test statistic

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

                 Z = \frac{114000-110000}{\frac{17000}{\sqrt{53} } }

                Z =  1.7130

Tabulated value Z = 2.576 at 0.01 level of significance

The calculated Z- value =  1.7130 < 2.576 at 0.01 level of significance

Null hypothesis is accepted

There is no difference between the  mean annual salary of all lawyers in a city is  different from $110,000

4 0
3 years ago
What 3 dividenb by 186 long divison
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Step-by-step explanation:

See picture for more information

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Akiko is making a pizza. The radius of the pizza is 19 inches. What is the circumference of the pizza (use 3.14 for pi and round
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Answer:

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Step-by-step explanation:

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C = 2\pi r\\or\\C = d\pi

The above equations mean the same thing, because the diameter is just 2 times the radius.

Anyhow, we insert this value into the equation...

C = 2\pi(19)\\C = 38(3.14)\\C = 119.32\\

This rounds to:

≈119.3

5 0
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