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Naya [18.7K]
3 years ago
14

HELP QUICK - I WILL MARK YOU BRAINLY

Mathematics
1 answer:
-BARSIC- [3]3 years ago
8 0

Answer:

perimeter goes with the one that has 5x^2

i dont know the second im sorry

Step-by-step explanation:

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Please help ! Desperate here !<br><br> Evaluate the expression :<br><br> 2{5[12+5(500-100)+399]}
-Dominant- [34]

Answer:

hope this will help


Step-by-step explanation:


3 0
3 years ago
(GIVING BRAINLIEST!!)
stepladder [879]

Answer: B

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Один острый угол прямоугольного треугольника равен 30".
dlinn [17]

Answer:

speak English I don't understand your letter?and what your question?

5 0
2 years ago
An analyst from an energy research institute in California wishes to precisely estimate a 99% confidence interval of the average
Lena [83]

Answer:

190

Step-by-step explanation:

Data provided in the question:

Confidence level = 99%

Therefore,

α = 1% = 0.01

[ from standard normal table ]

z-value for z_{\frac{\alpha}{2}}= z_{\frac{0.01}{2}}= = 2.58

Margin of error, E = $0.06

Standard deviation, σ = $0.32

Now,

n = (\frac{z_{0.005}\sigma}{E})^2

Here,

n is the sample size (or the minimum number of gas stations  )

on substituting the respective values, we get

= (\frac{z_{0.005}\sigma}{E})^2

= (\frac{2.58\times0.32}{0.06})^2

= 13.76²

= 189.3376 ≈ 190

Hence,

minimum number of gas stations that she should include in her sample is 190

5 0
3 years ago
The first term of an arithmetic sequence is -5, and the tenth term is 13. Find the common difference.
Sergeeva-Olga [200]
(A) 1.8

The difference is 18, 13 is bc the tenth term so divide 18 by 10 to get 1.8
7 0
3 years ago
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