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3 years ago

Please I need help with this question.

Mathematics

1 answer:

OlgaM077 [116]3 years ago

8 0

Answer:

It is 28 miles. It is much more simple than you are making it out to be in your head. Draw out the picture with 7 marks on a line. The first 3 marks were traveled Friday. After Friday, there are 4 marks left. On Saturday, 2 of those 4 remaining marks are traveled. On Sunday, the last two marks are traveled. The last two marks are 8 miles together, meaning that each mark is 4 miles a piece. Therefore, 7 times 8 is 28 miles.

Step-by-step explanation:

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A local bank has determined that the daily balances of the checking accounts of its customers are normally distributed with an a

maria [59]

Answer:

83.43% of customer's balances is between $241 and $301.60.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = $280

Standard Deviation, σ = $20

We are given that the distribution of daily balance is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(customer's balances is between $241 and $301.60)

$P(241 \leq x \leq 301.60) \\\\= P(\displaystyle\frac{241 - 280}{20} \leq z \leq \displaystyle\frac{301.60-280}{20}) \\\\= P(-1.95 \leq z \leq 1.08)\\\\= P(z \leq 1.08) - P(z < -1.95)\\\\= 0.8599 -0.0256 = 0.8343 =83.43\%$

Thus, 83.43% of customer's balances is between $241 and $301.60.

5 0

3 years ago

Roberto is finding the coordinates of the image of a triangle with vertices A(1,1) B(4,1) and C(1,5) after a reflection over the

Morgarella [4.7K]

I think the answer is c

4 0

3 years ago

Sam and Annika ride their bike to school. Sam rides his bike (k) kilometers. Annika rides her bike 2 less than 4 times as many k

pav-90 [236]

Because he lives farther from the school than Anneika more than likely

3 0

4 years ago

Look at the graph shown below:

ElenaW [278]

So.. take a peek at the picture... let's get two points from it, hmm say 0,4 notice it touches the y-axis there, and say hmmm -4, 1, almost at the bottom of the line

$\bf \begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
% (a,b)
&({{ 0}}\quad ,&{{ 4}})\quad 
% (c,d)
&({{ -4}}\quad ,&{{ 1}})
\end{array}
\\\\\\
% slope = m
slope = {{ m}}= \cfrac{rise}{run} \implies 
\cfrac{{{ y_2}}-{{ y_1}}}{{{ x_2}}-{{ x_1}}}\implies \cfrac{1-4}{-4-0}$

$\bf y-{{ y_1}}={{ m}}(x-{{ x_1}})\qquad 
\begin{array}{llll}
\textit{plug in the values for }
\begin{cases}
y_1=4\\
x_1=0\\
m=\boxed{?}
\end{cases}\\
\textit{and solve for "y"}
\end{array}\\
\left. \qquad \right. \uparrow\\
\textit{point-slope form}$

once you get the slope and solve for "y", that'd be the equation of the line.

7 0

3 years ago

251<br> 245<br> *<br> *232<br> 245+245

Brums [2.3K]

490
200+200 =400
45+ 45= 90
Total is 490

8 0

3 years ago