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4 years ago

50 points for answering!!!!!! Write the standard equation of each circle

Mathematics

2 answers:

MaRussiya [10]4 years ago

7 0

(x – h)^2 + (y – k)^2 = r^2

Veronika [31]4 years ago

4 0

How the circles look like

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HELP PLEASEEE, I REALLY DO NOT UNDERSTAND THESE QUESTIONS. THANK YOU HELP IS VERY MUCH APPRECIATED!!! ASAP

ziro4ka [17]

Answer: New Mean = $40,920

New Median = $38,500

Step-by-step explanation:

5 employee's salaries are as follows in order from least to greatest:

$32,000 - unknown - $38,500 - unknown - unknown

The median (middle number) is: $38,500

The mean (average) of the 5 salaries is: $40,300

If $3,100 is added to the $32,000 salary, then the mean(average) is increased by $\dfrac{\$3100}{5\ salaries}=\$620$ .

Old Mean + increase = New Mean

$40,300 + $ 620 = $40,920

The median (middle number) does not change. It is still $38,500

8 0

3 years ago

Find all the zeros of the equation -2x^4+27x^2+1200=0

Angelina_Jolie [31]

For this case we have the following polynomial:
$-2x ^ 4 + 27x ^ 2 + 1200 = 0$
To solve the problem we apply the following steps:
1) We make a change of variables u = x ^ 2
2) We rewrite the polynomial
3) Solve the quadratic equation using the formula for the quadratic equation
4) We return the change and find four roots
Answer:
See attached image for procedure and solution

4 0

4 years ago

Mutually exclusive means that two sets of numbers have no numbers in common. Name two subsets of real numbers that are mutually

loris [4]

The example that I can think of is a deck of playing cards. The two events that don't have a common set would be the black card and the red card. They are mutually exclusive because there can only be two possible colors. If the card is not red, then it is black (and vice versa). There is no card that consists of both colors.

3 0

3 years ago

Sound travels about 750 miles per hour. If you stand in a canyon and sound a horn, you will hear an echo.

cricket20 [7]

Answer:

The sound takes time to go to a point and reflect back to your position.

It means the sound went twice a distance.

=> Suppose it takes about 0.5 seconds to hear the echo, the canyon wall would be [750 x (0.5/3600)]/2 = 0.052 miles

=> Suppose it takes about n seconds to hear the echo, the canyon wall would be [750 x (n/3600)]/2 miles

Hope this helps!

8 0

3 years ago

Ming took a cab across town. His fare was $22, and he leaves an 18% tip. What is the total amount ming pays the cab driver.

Aleks04 [339]

$\bf \begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{18\% of 22}}{\left( \cfrac{18}{100} \right)22}\implies 3.96~\hfill \stackrel{\textit{total amount paid}}{22+3.96\implies 25.96}\\\hspace{34em}$

8 0

3 years ago