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Thepotemich [5.8K]
3 years ago
8

Which statement is true about regular exercise? 1.It decreases your resting heart rate.

Mathematics
2 answers:
vazorg [7]3 years ago
7 0

Answer:

got correct on edmentum mastery test, hope this helps

Sergio039 [100]3 years ago
6 0
It decreases your resting heart rate
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If you put the equation into graphing calculator online or manual, you can get the graph.

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katovenus [111]

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Find the equation of the parabola that passes through
valentinak56 [21]

so we have the points of (0,-7),(7,-14),(-3,-19), let's plug those in the y = ax² + bx + c form, since we have three points, we'll plug each one once, thus a system of three variables, and then we'll solve it by substitution.

\bf \begin{array}{cccllll} \stackrel{\textit{point (0,-7)}}{-7=a(0)^2+b(0)+c}& \stackrel{point (7,-14)}{-14=a(7)^2+b(7)+c}& \stackrel{point (-3,-19)}{-19=a(-3)^2+b(-3)+c}\\\\ -7=c&-14=49a+7b+c&-19=9a-3b+c \end{array}

well, from the 1st  equation, we know what "c" is already, so let's just plug that in the 2nd equation and solve for "b".

\bf -14=49a+7b-7\implies -7=49a+7b\implies -7-49a=7b \\\\\\ \cfrac{-7-49a}{7}=b\implies \cfrac{-7}{7}-\cfrac{49a}{7}=b\implies -1-7a=b

well, now let's plug that "b" into our 3rd equation and solve for "a".

\bf -19=9a-3b-7\implies -12=9a-3b\implies -12=9a-3(-1-7a) \\\\\\ -12=9a+3+21a\implies -15=9a+21a\implies -15=30a \\\\\\ -\cfrac{15}{30}=a\implies \blacktriangleright -\cfrac{1}{2}=a \blacktriangleleft \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{and since we know that}}{-1-7a=b}\implies -1-7\left( -\cfrac{1}{2} \right)=b\implies -1+\cfrac{7}{2}=b\implies \blacktriangleright \cfrac{5}{2}=b \blacktriangleleft \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill y=-\cfrac{1}{2}x^2+\cfrac{5}{2}x-7~\hfill

3 0
3 years ago
Given f(x)=-3x+2 , fine the domain value if the range value is -10
Nimfa-mama [501]
-10=-3x+2\\
-3x=-12\\
x=4
5 0
3 years ago
The number of patients treated at Dr. McCormick’s dentist office each day for nine days is 13, 16, 16, 10, 6, 12, 4, 12, 16. Fin
Kitty [74]

mean 11.6 or 12

median 4 (10-6)

range 12 (16-4)

3 0
3 years ago
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