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Darina [25.2K]
3 years ago
8

What is 345.6 in expanded form

Mathematics
2 answers:
baherus [9]3 years ago
8 0
<span>300 + 70 + 6 is the right answer

</span>
sweet [91]3 years ago
6 0
345.6=(3×100)+(4×10)+(5×1)+(6/10)
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Which are the ways to finance your college education?
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All of the above

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5 0
3 years ago
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The system of linear equations 5x+2y = 3 and x+y = -1 is graphed below.What is the solution to the system of equations?
Kazeer [188]

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<h2>C. (3, -4)</h2>

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7 0
3 years ago
You draw two balls from an urn and track the colors. When you start, it contains three blue balls and one red ball.
marusya05 [52]
Is there a question???
8 0
3 years ago
How many and what type of solutions does the equation have?
Natali [406]
Let's solve the equation 2k^2 = 9 + 3k
First, subtract each side by (9+3k) to get 0 on the right side of the equation
2k^2 = 9 + 3k
2k^2 - (9+3k) = 9+3k - (9+3k)
2k^2 - 9 - 3k = 9 + 3k - 9 - 3k
2k^2 - 3k - 9 = 0

As you see, we got a quadratic equation of general form ax^2 + bx + c, in which a = 2, b= -3, and c = -9.
Δ = b^2 - 4ac
Δ = (-3)^2 - 4 (2)(-9)
Δ<u /> = 9 + 72
Δ<u /> = 81

Δ<u />>0 so the equation got 2 real solutions:
k = (-b + √Δ)/2a = (-(-3) + √<u />81) / 2*2 = (3+9)/4 = 12/4 = 3
AND
k = (-b -√Δ)/2a = (-(-3) - √<u />81)/2*2 = (3-9)/4 = -6/4 = -3/2

So the solutions to 2k^2 = 9+3k are k=3 and k=-3/2

A rational number is either an integer number, or a decimal number that got a definitive number of digits after the decimal point.

3 is an integer number, so it's rational.
-3/2 = -1.5, and -1.5 got a definitive number of digit after the decimal point, so it's rational.

So 2k^2 = 9 + 3k have two rational solutions (Option B).

Hope this Helps! :)
7 0
3 years ago
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