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velikii [3]
3 years ago
8

HELP PLEASE!!! WILL BE GIVING BRAINLIEST!!! (its ok if you don't get all I just need at least nine)

Mathematics
1 answer:
iogann1982 [59]3 years ago
6 0

Answers:

1.) x\leq 2

2.) y < -\frac{14}{3}

3.) x>2

4.) z\geq 9

5.) v (That variable is a "v")

6.) x=18

7.) x\geq 5

8.) y>-\frac{1}{2}

9.) x\leq 5

10.) x=12

(I answered the questions in order from top to bottom, hope I helped!)

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Consumer programs perform which two functions to protect consumers
stepladder [879]

birkkkkkkkkkkkkkkkkkkk

6 0
3 years ago
Find the value of 2^-3 times 3^-2
andreyandreev [35.5K]

Answer:

Step-by-step explanation:

2^-3=1/2^3

3^-2=1/3^2

(2^-3)(3^-2)=1/72

7 0
3 years ago
Help please soon !!!!!!
stepan [7]
75.25x + 3604 = 300.50x
300.50x - 75.25x = 3604
225.25x = 3604
x = 16
Both companies charged the same at 16 tons
first answer 16 tons
--------------------
300.50x = 300.50(16) = $4,808
both companies charged the same are $4,808
second answer is $4,808
5 0
3 years ago
-6<br><img src="https://tex.z-dn.net/?f=%20-%206%20%2B%203%20%5Ctimes%204%20-%2011" id="TexFormula1" title=" - 6 + 3 \times 4 -
ipn [44]
The answer is -5

Explanation:

-6 + 3 x 4 -11=
-6 + 12 -11=
+ 6 -11 = -5
4 0
3 years ago
Read 2 more answers
The thicknesses of 81 randomly selected aluminum sheets were found to have a variance of 3.23. Construct the 98% confidence inte
Yuliya22 [10]

Answer:

The confidence interval for the population variance of the thicknesses of all aluminum sheets in this factory is Lower limit = 2.30, Upper limit = 4.83.

Step-by-step explanation:

The confidence interval for population variance is given as below:

[(n - 1)\times S^{2}  /  X^{2}  \alpha/2, n-1 ] < \alpha < [(n- 1)\times S^{2}  / X^{2} 1- \alpha/2, n- 1 ]

We are given

Confidence level = 98%

Sample size = n = 81

Degrees of freedom = n – 1 = 80

Sample Variance = S^2 = 3.23

X^{2}_{[\alpha/2, n - 1]}   = 112.3288\\\X^{2} _{1 -\alpha/2,n- 1} = 53.5401

(By using chi-square table)

[(n – 1)*S^2 / X^2 α/2, n– 1 ] < σ^2 < [(n – 1)*S^2 / X^2 1 -α/2, n– 1 ]

[(81 – 1)* 3.23 / 112.3288] < σ^2 < [(81 – 1)* 3.23/ 53.5401]

2.3004 < σ^2 < 4.8263

Lower limit = 2.30

Upper limit = 4.83.

8 0
2 years ago
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