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3 years ago

15

a spinner has 3 equal sections labeled red, purple ,and yellow how many times would you expect to land on red if you doin it 24

times

1 answer:

torisob [31]3 years ago

6 0

Answer:

8 times

Step-by-step explanation:

we have a 1/3 chance per spin to land on red

so we would expect it to land 33.3% of the time

1/3*24=8

another easy way is to divide by 3

24/3=8

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What is the value of y in this system of equations: 3x + y = 9 y = –4x + 10 ?

Ahat [919]

<span>3x + y = 9 (I)
</span><span>y = –4x + 10 (II)
------------------------
</span> $\left \{ {{3x + y = 9 } \atop {y = -4x + 10 }} \right.$

Pass the incognito "4x" to the first term, changing the signal when changing sides.
<span>-------------------------
simplify by (-1)
</span> $\left \{ {{3x + y = 9.(-1)} \atop {4x + y = 10 }} \right.$ <span>

-------------------------
</span> $\left \{ {{- 3x - \diagup\!\!\!\!y =-9} \atop {4x + \diagup\!\!\!\!y = 10}} \right. 
$
<span>
-------------------------
</span> $\left \{ {{- 3x = - 9} \atop {4x = 10}} \right.$ <span>

-----------
</span> $\boxed{x = 1}$ <span><span>

</span></span><span>Substitute in equation (I) to find the value of "Y".

</span>3x + y = 9 (I)
3*(1) + y = 9
3 + y = 9
y = 9 - 3
$\boxed{y = 6}$

Answer:
$\boxed{\boxed{ \left \ {{x=1} \atop {y=6}} \right. }}$

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3 years ago

what is thirty-four million plus two hundred fifty-six thousand times four hundred? Please write the answer in scientific notati

Mashutka [201]

Million has 6 zeoes
34,000,000+256,00*400

PEMDAS
multiply first
256,000*400=102,400,000
add to 34,000,000
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now
must be in form
(x)(10^m)
such taht
1<x<10
and x times 10^m is the original number
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sergij07 [2.7K]

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Step-by-step explanation:

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Answer:

Option C. X=A/4

Step-by-step explanation:

we know that

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$A=LW$

where

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W is the width

In this problem we have

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substitute

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