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grandymaker [24]
3 years ago
9

Help me!! solve for d

Mathematics
1 answer:
SpyIntel [72]3 years ago
3 0

Answer:

d =±2sqrt(7) i

Step-by-step explanation:

d^2 = -28

Take the square root of each side

sqrt(d^2) = ±sqrt(-28)

d = ±sqrt(-28)

d = ±sqrt(-1)sqrt(28)

We know that sqrt(-1) = i

d =±i*sqrt(4)sqrt(7)

d =±i 2sqrt(7)

d =±2sqrt(7) i

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Answer:

Choice G

Step-by-step explanation:

Choice F would imply Circle II to I (But we are looking for I to II). Choices H and J implies translation not dilation.

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3 years ago
a sixth grade student can complete 20 multiplication facts in one minute if you works at the same rate how long should it take h
melamori03 [73]

Answer:

It should take him <u>1.75 minutes</u> to complete 20 multiplication facts, which is the same thing as 1 minute and 45 seconds, or 105 seconds.

Step-by-step explanation:

a. If it takes him one minute to complete 20 multiplication facts, that's 3 seconds per question, because 60/20 = 3.

b. Multiply 3 x 35 questions to get 105 seconds.

c. Divide 105 seconds by 60 seconds (60 in a minute) to get 1.75 minutes, which is the same thing as 105 seconds.

Hope this helps! Feel free to give me Brainliest if you feel this helped. Have a good day and good luck on your assignment. :)

6 0
3 years ago
Read 2 more answers
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vladimir1956 [14]

Answer:

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Step-by-step explanation:

x/7 = 11/15

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x/7 *7 = 11/15 *7

x = 77/15

We can leave as an improper fraction or change to a mixed number

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6 0
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dmitriy555 [2]

Answer:

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Step-by-step explanation:

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3 years ago
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kozerog [31]

Answer:

x=-0.21...

Step-by-step explanation:

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Isolate the x term

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(I rounded to the nearest 100th)

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3 years ago
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