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4 years ago

10

Solve the equation for the indicated variable. U=mgh,for h

1 answer:

Alexus [3.1K]4 years ago

6 0

U=mgh ⇒h=U/mg

Answer: h=U/mg

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What are the input variable and the output variable?

Citrus2011 [14]

<span>The input variable is the number of rowers in a rowboat and the output variable is the speed of the rowboat. When you input the number of rowers into an equation, you should be able to find out how fast the rowboat is going. The speed of the rowboat is directly proportional to the number of rowers.</span>

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3 years ago

Hey anybody plz help me ;C

jekas [21]

Answer:

her equation should be a² + 3² = 4²

Step-by-step explanation:

a² + 3² = 4²

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3 years ago

Homework: 5.1 Systems of Linear Equations

Klio2033 [76]

Answer:

$\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:}$

$x=8,\:y=5$

Step-by-step explanation:

Given the system of linear equations

$7x-y=51$

$x+3y=23$

solving by the elimination method

$\begin{bmatrix}7x-y=51\\ x+3y=23\end{bmatrix}$

$\mathrm{Multiply\:}x+3y=23\mathrm{\:by\:}7\:\mathrm{:}\:\quad \:7x+21y=161$

$\begin{bmatrix}7x-y=51\\ 7x+21y=161\end{bmatrix}$

$7x+21y=161$

$-$

$\underline{7x-y=51}$

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so

$\begin{bmatrix}7x-y=51\\ 22y=110\end{bmatrix}$

now solving for y

$22y=110$

$\mathrm{Divide\:both\:sides\:by\:}22$

$\frac{22y}{22}=\frac{110}{22}$

$y=5$

$\mathrm{For\:}7x-y=51\mathrm{\:plug\:in\:}y=5$

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$7x=56$

$\mathrm{Divide\:both\:sides\:by\:}7$

$\frac{7x}{7}=\frac{56}{7}$

$x=8$

$\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:}$

$x=8,\:y=5$

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3 years ago

javier bought 48 sports cads at a yard sale. of the cards, 3 eighths were baseball cards. how many cards were baseballcards

Sergio039 [100]

Ahemmmm what is 3/8 of 48? well, is just their product.

$\bf \cfrac{3}{8}\cdot 48\implies \cfrac{144}{8}\implies 18$

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3 years ago

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HACTEHA [7]

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3 years ago