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2 years ago

11

Write and solve an equation to answer the question. You order two servings of pancakes and a fruit cup. The cost of the fruit cu

p is $1.50. You leave a 15% tip. Your total bill is $11.50. What is the cost pp of one serving of pancakes?

1 answer:

ira [324]2 years ago

8 0

(11.50-15%*11.50-1.50)/2

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Module 6 What is the line of best fit? Why do we want the sum of the residuals to be as close to zero as possible?

Mamont248 [21]

Answer:

zero residual equals zero mean

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3 years ago

Serena has $130 in her bank account . Her account is compounded quarterly for 2 years at a 9.4% interest rate . What is her tota

____ [38]

$\bf ~~~~~~ \textit{Compound Interest Earned Amount}
\\\\
A=P\left(1+\frac{r}{n}\right)^{nt}
\quad 
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{original amount deposited}\to &\$130\\
r=rate\to 9.4\%\to \frac{9.4}{100}\to &0.094\\
n=
\begin{array}{llll}
\textit{times it compounds per year}\\
\textit{quarterly, thus four}
\end{array}\to &4\\
t=years\to &2
\end{cases}
\\\\\\
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3 years ago

Mileage tests are conducted for a particular model of automobile. If a 98% confidence interval with a margin of error of 1 mile

Llana [10]

Answer: 37

Step-by-step explanation:

Given : Significance level : $\alpha:1-0.98=0.02$

Critical value : $z_{\alpha/2}=z_{0.01}=2.33$

margin of error : E= 1 mile per gallon

Population standard deviation: $\sigma=2.6$ miles per gallon.

We know that when the population standard deviation is known then the formula to find the sample size is given by :

$n=(\dfrac{z_{\alpha/2}\times \sigma}{E})^2$

$n=(\dfrac{(2.33)\times 2.6}{1})^2=36.699364\approx37$ [Round to the next whole number.]

Hence, the required number of automobiles should be used in the test = 37

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3 years ago

Percent change from 100 to 160

Oxana [17]

Answer:

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Step-by-step explanation:

100 is the entire thing and if you convert it into a percentage it is 100%. But the difference between 100% to 160% is 60%.

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2 years ago

Please help need it due now!!!

ahrayia [7]

Answer:

1) 0.9, 0.99, 0.09, 0.0009

2) 4(2x²+9x)

3) 110

4) $9.50 per pizza

5) 23

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2 years ago