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Mathematics

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Tanya [424]3 years ago

8 0

Answer:

Step-by-step explanation:

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Rashan buys 3 7/10 pounds of flour and Diego buys 2 3/4 pounds of flour they use 4 3/5 pounds of flour to bake bread. how much f

Alex787 [66]

To make this a bit easier we can convert the fractions to decimals, then add them up to find out how much flour they originally had. Rashan bought 3 7/10 pounds of flour, which becomes 3.7 pounds. Diego bought 2 3/4 pounds of flour, which becomes 2.75 pounds of flour. In total they both had 3.7 + 2.75 = 6.45 pounds of flour.

Now they used 4 3/5 pounds to bake some bread, which becomes 4.6 pounds. To find out how much flour they have left, we subtract the 4.6 from 6.45, which equals 1.85 pounds of flour left.

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4 years ago

Prove that x 2 + y2 - 1 is irreducible in q[ x, y].

weqwewe [10]

Suppose that the polynomial x^2+y^2-1 is not irreducible.
It means that there exists two fractions such that :
$(\frac{p}{q})^2+( \frac{s}{t} )^2 -1=0\\\text{rearranging the above formula we get:}\\p^2t^2=q^2(t^2-s^2)\\\text{since q and p are primes each other, we deduce that }\\\text{q divide t meaning that we can write }t=a\times t\text{ for an integer a}\\\text{rearranging again the formula and using our finding we get:}\\q^2s^2=a^2q^2(q^2-p^2)\\\text{Same argument as above, we deduce that q divide s.}$
We found that q divide t and q divide s, but s and t are supposed to be prime each other. It is a contradiction.
The polynomial x^2+y^2-1 is then irreducible in q[x,y]

6 0

4 years ago

An airplane takes off with a full tank of 40,000 gallons of fuel and flies at an average speed of 550 miles per hour. After 8 ho

vivado [14]

The answer is 9,235 because 14,000 - 4,875 is 9,235

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3 years ago

23 clothespins are placed on a clothesline at 2-foot intervals. How far is it from the first clothespin to the last one

mina [271]

Djemmdndjeje Jensen

4 0

3 years ago

Please help me! I will mark brainliest for best answer :)

denis-greek [22]

Answer:

r = 5

I just turned it in it was correct

Step-by-step explanation:

please mark brainliest

4 0

4 years ago

Read 2 more answers