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2 years ago

Yall help im drowning in work. 19 = 4a − 12

Mathematics

2 answers:

vova2212 [387]2 years ago

4 0

Answer:

7.75

Step-by-step explanation:

19 = 4a - 12

add 12 to both sides

31 = 4a

divide by 4 to isolate the variable

7.75 = a

miss Akunina [59]2 years ago

3 0

Answer:

a=7.75

Step-by-step explanation:

19 = 4a − 12. 19+12=31. 31/4=7.75

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2 years ago

If f(x)= 3x + 10x and g(x)=5x - 3 find (f+g)(x)

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3 years ago

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vlada-n [284]

$\bf h=20ln(3t+2)+30\\\\
-------------------------------\\\\
\boxed{a}\\\\
\stackrel{0~years}{t=0}\qquad h=20ln[3(0)+2]+30\implies h=20ln(2)+30
\\\\\\
h\approx 43.86
\\\\\\
\boxed{b}\\\\
\stackrel{1~meter}{h=100}\qquad 100=20ln(3t+2)+30\implies 70=20ln(3t+2)
\\\\\\
\cfrac{70}{20}=ln(3t+2)\implies \stackrel{\textit{log cancellation rule}}{e^{\frac{7}{2}}=e^{ln(3t+2)}}\implies e^{\frac{7}{2}}=3t+2
\\\\\\
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$\bf \boxed{c}\\\\
\cfrac{dh}{dt}=20\left(\cfrac{1}{3t+2}\cdot 3 \right)+0\implies \cfrac{dh}{dt}=20\left(\cfrac{3}{3t+2} \right)\\\\\\ \cfrac{dh}{dt}=\cfrac{60}{3t+2}
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3 years ago

Read 2 more answers

A cylinder and a cone have the same volume. The cylinder has radius x and height y. The cone has radius 3x. Find the height of t

timurjin [86]

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3 years ago