2 years ago

The minute hand will move how many millimeters farther than the hour hand

Mathematics

1 answer:

raketka [301]2 years ago

5 0

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What is the completely factored form of d4 − 81?

lilavasa [31]

For this case we must factor the following expression:

$d ^ 4-81$

Rewriting the expression:

$(d ^ 2) ^ 2-9 ^ 2$

We factor using the formula of the square difference:

$a ^ 2-b ^ 2 = (a + b) (a-b)$

Where:

$a = d ^ 2\\b = 9$

So:

$(d ^ 2 + 9) (d ^ 2-9)$

From the second term we have:

$d ^ 2-3 ^ 2 = (d-3) (d + 3)$

Finally, the factored expression is:

$(d ^ 2 + 9) (d-3) (d + 3)$

Answer:

$(d ^ 2 + 9) (d-3) (d + 3)$

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2 years ago

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suppose the temperature outside is dropping 2.5 degrees each hour how much will the temperature change in 6 hours

mote1985 [20]

Answer:

15 degrees

Step-by-step explanation:

2.5x6= 15

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2 years ago

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a store makes a profit of 25$ on each graphing calculator it sells. how many calculators must the store sell to make a profit of

Irina18 [472]

11 because 275÷25 is 11. 11 calculators would cost 275 in total

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2 years ago

(m? - 5 m +6 )<br>÷(m - 2)

leonid [27]

Answer:

(m? - 5 m +6 ) ÷ (m - 2) = $\frac{m}{-5m+6} / (m - 2)$

Step-by-step explanation:

Divide the first expression by the second expression.

$\frac{m}{-5m+6} / (m - 2)$

I hope this helps.

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2 years ago

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Can someone please help me with atleast one and explain how to do it

Anna [14]

There's a couple ways to do this. These look like special triangles to me. Which should be the 30 60 90 triangle's which have the same ratios for their legs. The legs will always be square root three and one and the hypotenuse of two - I can't see what I'm typing for some reason so I will finish in a comment

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2 years ago