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zhenek [66]
3 years ago
11

What are the roots of x2-3x+4

Mathematics
1 answer:
Sphinxa [80]3 years ago
6 0

x^2-3x+4=0\\\\a=1;\ b=-3;\ c=4\\\\b^2-4ac=(-3)^2-4(1)(4)=9-12=-3 < 0-NO\ real\ solutions

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Which blocks have a volume between 20 and 30 cubic centimeters?
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Can anyone help me on this problem? Please it doesn’t make sense to me...
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6

Step-by-step explanation:

Cost per item is found by dividing the cost by the number of items. If the woman bought n items for $120, the cost of each item is $120/n. If the woman bought 24 more items, n+24, at the same price, then the cost per item is $120/(n+24). The problem statement tells us this last cost is $16 less than the first cost:

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The woman bought 6 items.

_____

Check

When the woman bought 6 items for $120, she paid $120/6 = $20 for each of them. If she bought 6+24 = 30 items for the same money, she would pay $120/30 = $4 for each item. That amount, $4, is $16 less than the $20 she paid for each item.

3 0
3 years ago
A school choir needs to make T-shirts for its 75 members and has set aside some money in their budget to pay for them. The membe
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Answer:

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X = The number of colors on the shirts

Step-by-step explanation:

The number of T-shirts required by the members of the school choir = 75

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The fee per color on the shirts = $50

The total cost of the order = Y

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The total fee of the added colors to the shirt = The number of colors on the shirts × The fee per color on the shirts

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Y = $225 +  X × $50.

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3 years ago
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