2 years ago

Y = 2x + 3

Mathematics

1 answer:

mario62 [17]2 years ago

4 0

The answer is no solutions

You might be interested in

Determine whether the function f(x)= 1/x^2 is even, odd or neither.

gulaghasi [49]

The function f(x)= 1/x^2 is even. Hope that helps!

4 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

at a sale shirts were sold for 80% off the original price the original price was $75 how much would be saved

Elis [28]

$\bf \begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{80\% of 75}}{\left(\cfrac{80}{100} \right)75}\implies \stackrel{\textit{savings}}{60}$