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4 years ago

Marco is playing a game with a standard deck of cards. The first person to select a heart from the deck without looking wins.

Mathematics

2 answers:

Juli2301 [7.4K]4 years ago

8 0

are not respuesta sorry

Naily [24]4 years ago

6 0

Answer:

What is the theoretical probability that Marco will choose a card with a heart on it?

1/4

What is the theoretical probability that Marco will choose a card without a heart on it?

3/4

Step-by-step explanation:

(*☻-☻*)

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Find an equation for the line perpendicular to y=−15x+3 with x-intercept at x = 3.

Alex Ar [27]

bearing in mind that perpendicular lines have negative reciprocal slopes, let's find the slope of the provided line then

$\bf y=\stackrel{\stackrel{m}{\downarrow }}{-15}x+3\qquad \impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array} \\\\[-0.35em] ~\dotfill$

$\stackrel{\textit{perpendicular lines have \underline{negative reciprocal} slopes}} {\stackrel{slope}{-15\implies -\cfrac{15}{1}}\qquad \qquad \qquad \stackrel{reciprocal}{-\cfrac{1}{15}}\qquad \stackrel{negative~reciprocal}{+\cfrac{1}{15}\implies \cfrac{1}{15}}}$

well, we know the x-intercept is at x = 3, recall when a graph intercepts the x-axis y = 0, so this point is (3 , 0). Then we're really looking for the equation of a line whose slope is 1/5 and runs through (3 , 0).

$\bf (\stackrel{x_1}{3}~,~\stackrel{y_1}{0})~\hspace{10em} slope = m\implies \cfrac{1}{5} \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-0=\cfrac{1}{5}(x-3)\implies y=\cfrac{1}{5}x-\cfrac{3}{5}$

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4 years ago

emily is going to invest in an account paying an interest rate of 4.4% compounded daily. how much would emily need to invest, to

julsineya [31]

Answer:

ok, this is what i mean. if you dont unerstand then stop it yes ok,ay hanks you

Step-by-step explanation:

3 0

3 years ago

Plz help i need this soon

wlad13 [49]

Answer:

b= (m)(-150)

Step-by-step explanation:

1800-1350 = 450

450/3 = 150

b= m*-150

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4 years ago

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Nikolay [14]

Haiiiiiiiiiiiiiiiiiiiiiiiiiiiii haiiiiiiiiiiiiiiiiiiiiiiiiiiiii

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3 years ago

Plz help<br>pre-algebra<br><br>18 – x = 12

ASHA 777 [7]

Answer:

x = 6

Step-by-step explanation:

18 - x = 12

-18 -18

-x = -6

--- ---

-1 -1

x = 6

6 0

4 years ago

Read 2 more answers