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Anon25 [30]
3 years ago
8

Find the solution to the equation 30x +7= 9. Give your answer as a fraction.

Mathematics
2 answers:
8090 [49]3 years ago
8 0
X = 1/15
hope this helps
Ostrovityanka [42]3 years ago
5 0
30x+7=9
30x=9-7
30x=2
X=2/30
X=1/15
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because if you see good the second one have the dimensional in the same way

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The temperature was 75° Fahrenheit. The temperature dropped at a rate of 10° per hour.
Zigmanuir [339]

Answer:

-5 degrees

Step-by-step explanation:

you started at 75 degrees. it dropped at a rate of 10 degrees per hour. It's been eight hours. 8 times 10 equals 80. It dropped a total of 80 degrees. the starting 75 degrees minus the current 80 degrees equals -5 degrees.

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20 What decimal does this model represent? Explain.
umka2103 [35]

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The model represents the decimal 73.

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3 years ago
A board of length 7 divided by the quantity x minus 2 end of quantity meters was cut into two pieces. If one piece is 3 divided
bulgar [2K]

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Length of other board =\frac{4x+20}{x^{2} -4} metres

Step-by-step explanation:

Given: Length of board = \frac{7}{x-2} metres

Length of board was divided into two.

Length of one piece = \frac{3}{x+2} metres

Let l = length of the other board

Length of the other board = Length of board - Length of one piece

So, l=\frac{7}{x-2}-\frac{3}{x+2}

l=\frac{7(x+2)-3(x-2)}{(x-2)(x+2)} \\\\l=\frac{7x+14-3x+6}{x^{2} -4} \\\\l=\frac{4x+20}{x^{2} -4}

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4 0
3 years ago
Can someone answer this question please answer it correctly if it’s corect I will mark you brainliest
lana [24]

Answer:

1/21

Step-by-step explanation:

Cards: 2,3,4,5,6,7,8      7 cards

1st card :5

P(5) = number of 5's / total

       = 1/7

Then we keep the card

Cards: 2,3,4,6,7,8   only 6 cards left

card less than 4: 2,3

P (card less than 4)  = number of cards less than 4/ total cards

                                  = 2/6 = 1/3

P (5, no replacement, card less than 4) = P(5) * P( less than 4)

                                                                 = 1/7 * 1/3

                                                                  =1/21

4 0
3 years ago
Read 2 more answers
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