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Contact [7]
4 years ago
7

If you flip a coin ten times, how many diffrent sequences of heads and tails are possible

Mathematics
1 answer:
nikdorinn [45]4 years ago
3 0

Answer:

I'm pretty sure its D

Step-by-step explanation: Brainliest???

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What two numbers multiply to get 25 and add to -10
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x;\ y-the\ numbers\\\\  \left\{\begin{array}{ccc}xy=25\\x+y=-10&\to x=-10-y\end{array}\right\\\\subtitute:\\(-10-y)y=25\\(-10)(y)-y(y)=25\\-10y-y^2=25\\-y^2-10y-25=0\ \ \ \ |change\ the\ signs\\y^2+10y+25=0\\y^2+5y+5y+25=0\\y(y+5)+5(y+5)=0\\(y+5)(y+5)=0\\(y+5)^2=0\iff y+5=0\to \boxed{y=-5}\\\\subtitute\ the\ value\ of\ y\ to\ the\ equation\ x=-10-y\\x=-10-(-5)\\x=-10+5\\\boxed{x=-5}\\\\Answer:\boxed{-5\ and\ -5}
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4 years ago
List the next 4 multiples of the unit fraction . 1/2 ___,___,___,___,
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½ × 2 = 1
½ × 3 = 3/2
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½ × 5 = 5/2
8 0
3 years ago
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What is the midpoint of the segment shown below (2, 4) and (2, -7)
navik [9.2K]

Answer:

(2,-1.5)

Step-by-step explanation:

There are 11 points in between the two points therefore it has to be (2,-1.5)

7 0
4 years ago
Four times a number added to 3 times a larger number is 31. Seven subtracted from the larger number is equal to twice the smalle
aev [14]
Let the smaller number be x.
Let the bigger number be y.

\begin{cases} &4x + 3y = 31 \tex{ ----- (1) } \\ &y- 7 = 2x \tex{ ----- (2) } \end{cases}

Rearrange equation (2):
\begin{cases} &4x + 3y = 31 \tex{ ----- (1) } \\ &y = 2x + 7 \tex{ ----- (2) } \end{cases}



Sub (2) into (1):

4x + 3(2x + 7 ) = 31
4x + 6x + 21 = 31
10x + 21 = 31
10x = 10
x = 1

Sub x = 1 into (2):

y = 2x + 7
y = 2(1) + 7
y= 9

Answer: The two numbers are 1 and 9.

5 0
3 years ago
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what is the equation in poiny slope form of the line that is perpendicular to the given line and passes through the point (-4, -
MaRussiya [10]

Answer:

Step-by-step explanation:

Well, there is no given equation, but I can tell you that perpendicular lines have OPPOSITE <em>MULTIPLICATIVE INVERSE </em><em>[</em><em>RECIPROCAL</em><em>]</em><em> </em><em>rate of changes</em> [<em>slopes</em>].

Ex: 2 --> -½; -2 --> ½

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4 years ago
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