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stich3 [128]
4 years ago
10

Brian has reduced his cholesterol level by 8% after his last check up. If his original level was 200, what is his cholesterol le

vel now?
A.
198
B. 184
c. 216
D. 16
Mathematics
1 answer:
s2008m [1.1K]4 years ago
6 0

Answer:

B. 184

Step-by-step explanation:

A proportion is an easy way to solve this:

\frac{100\%}{200}  =  \frac{92\%}{x}  \\ 100x = 92(200) \\ x = 92(2) \\ x = 184

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-5/2a+ 5=25...............,....................................
sveta [45]

\text{Hey there!}

\mathsf{-\dfrac{5}{2}a+5=25}

\text{\bf{SUBTRACT}}\mathsf{\ by\ 5\ on\ your\ sides}\\\mathsf{-\dfrac{5}{2}a+5-5=25-5}\\\\\mathsf{Cancel\ out: 5-5\ because\ it\ gives\ you\ 0}\\\\\mathsf{Keep: 25 - 5\ because\ it\ helps\ us\ solve\ for\ a}\\\\\mathsf{25-5=20}\\\\\mathsf{New\ equation:- \dfrac{5}{2}a=20}

\text{\bf{MULTIPLY}}\mathsf{\  \dfrac{2}{-5}\ on\ your\ sides}\\\\\mathsf{\dfrac{2}{=5}\times\dfrac{-5}{2}a=\dfrac{2}{-5}\times20}\\\\\mathsf{Cancel\ out: \dfrac{2}{-5}\times\dfrac{-5}{2}\ because\ it\ gives\ you\ 1}\\\\\mathsf{Keep: \dfrac{2}{-5}\times20\ because\ it\ gives\ you\ the\ value\ of\ a}\\\\\mathsf{\dfrac{2}{-5}\times20=-8}

\boxed{\boxed{\boxed{\boxed{\mathsf{Thus\ your\ answer\boxed{\boxed{\mathsf{a=-8}}}}}}}}\checkmark

\large\text{Good luck on your assignment and enjoy your day!}

~\dfrac{\frak{LoveYourselfFirst}}{:)}

4 0
4 years ago
Y=8x+25, where x is hours . what is the y-intercept
Nady [450]
Y-intercept is 25. Plug 0 in for x.
4 0
3 years ago
I have to record myself answering questions for my math class and I really need help. I will reward 36 points.
oee [108]

Answer:

If the two graphs are symmetric with respect to the line y = x (mirror images over y = x ), then they are inverse functions. But, we need a way to check without the graphs, because we won't always know what the graphs look like! then f(x) and g(x) are inverse functions.

Step-by-step explanation: Hope this helps :)

8 0
3 years ago
One of the authors and some statistician friends have an ongoing series of Euchre games that will stop when one of the two teams
RSB [31]

Answer:

Parameter of interest is the proportion of games won by a certain team.

H0 : p = 0.5

H1 : p ≠ 0.5

Step-by-step explanation:

Parameter refers to any statistical measure which is derived from the population data. Therefore, the parameter of interest in the scenario described above is the proportion of win or loss by a particular team. This could be either team A or team B.

Probability of either of either win or loss :

Proportion, p of win = 0.5

Null hypothesis ; H0 : p = 0.5

Alternative hypothesis ; H1 : p ≠ 0.5

7 0
3 years ago
List the following in order from least steep to most steep.
klemol [59]

Answer:

  • h(x), f(x), j(x), g(x)

Step-by-step explanation:

<u>Given functions</u>

  • f(x)= -3/4x
  • g(x)= -5x
  • h(x)= 5/7x
  • j(x)= 11/3x

To compare steepness we'll compare absolute values of slopes

The steepness increases as the slope increases

<u>The slopes are </u>

  • 3/4, 5, 5/7, 11/3

<u>Comparing the fractions</u>

  • 3/4 = 21/28, 5/7 = 20/28, so 3/4 > 5/7

And

  • 11/3 < 4  

<u>So the order is </u>

  • 5/7 < 3/4 < 11/3 < 5

<u>As functions, the order is</u>

  • h(x), f(x), j(x), g(x)
5 0
3 years ago
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