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Ostrovityanka [42]
3 years ago
8

****Please help me with this math problem!!**** Will give stars, thanks, and brainliest!! Josh solved the equation below. Is his

solution correct? Explain why or why not. (Please show work) x^2-6x-7=0 x^2-6x+7\x^2-6x+9=7+9 (x-3)^2=16 x-3=16 x=19 x-3=-16 x=-13 I am pretty sure he messed up when he decided he needed to do x-3 twice, because when there is a +/- sign is the only time you would do x-3 then x+3, right?
Mathematics
1 answer:
viva [34]3 years ago
6 0
<span><span>Graphical form</span><span>: x^2-6*x-7=0x^2-6*x+7x^2-6*x+9=7+9*(x-3)^2=16x-3=16x=19x-3=-16 simplifies to x^2-6*x-7=-12*x+7*x^2+9=9*(x-3)^2+7=16*x-3=16*x=19*x-3=-16 </span><span>:  
: <span>simplify( x^2-6*x-7=0x^2-6*x+7x^2-6*x+9=7+9*(x-3)^2=16x-3=16x=19x-3=-16)

Hope this helps</span></span></span>
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15/6 pieces of pizza were eaten. Which is equivalent to 2.5. So 2.5 pizzas were eaten.

Step-by-step explanation:

Just did the math. Convert 4 1/3 to 0/6. So 1 times 2 is 2, and 3 times 2 is 6. Which would give you 4 2/6 which has the same denominator as 1 5/6.

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This means she has 52b cards.

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For 2 decks, she has 104 cards, or 52×1 cards.

For 5 decks, she has 260 cards, or 52×5 cards.

For 10 decks, she has 520 cards, or 52×10 cards.

Therefore, for b decks, she has 52×b, or 52b cards.

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