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3 years ago

Rotation: 270° about the origin Reflection: across the x-axis

Mathematics

1 answer:

postnew [5]3 years ago

8 0

Hope this help

a ) -3 , -1
b ) -4 , -3
c ) - 2 , -3

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Find the distance travelled in 1 h 40 min at a speed of 90 km/h

Mariulka [41]

90 km/h is your constant.
1h 40m - 1h since we have 90 km/h.
2/3 of 90 is what we need to find for the 40 min, since 40m/60m = 2/3.
60 is 2/3 of 90.
90 + 60 = 150.
Your distance traveled is 150km.

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3 years ago

Show that f(2-3i) is a real number

densk [106]

Answer:

2 - 3i

is 2 - the square root of -9

2 -√-9

2 + √9

2 + 3 = 5

Thank you (I dont know if these answers are 100% correct but I tried my best!)

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3 years ago

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Arte-miy333 [17]

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3 years ago

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Consider each of the following relationships. Which school shows the greatest rate of change between male and female students?

denis-greek [22]

Answer:

The greatest rate of change is for school A as it has the greatest ratio of 2.5

Step-by-step explanation:

School A:

Ratio of male to female students, $m_A=5:2=\frac{5}{2}=2.5$

School B:

Male students are related to female students by equation:

$y=2x$

Where, $x$ means number of female students and $y$ means number of male students.

Therefore, the ratio of male to female students is, $m_B=\frac{y}{x}=2$

School C:

Ratio of male to female students is, $m_C=\frac{\textrm{Number of male students}}{\textrm{Number of female students}}=\frac{200}{120}=1.67$

Now, rate of change of male to female students is directly proportional to the ratio of the two.

Hence, the greater the ratio, the greater the rate of change.

So, the greatest rate of change is for school A as it has the greatest ratio of 2.5

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3 years ago

Samantha soends 45 minutes at the gym for 6 days a week. how many hours does she spend at the gym

Alexxx [7]

45 minutes * 6 days = 270 minutes at the gum

but we need to change minutes to hours

1 hours = 60 minutes

270 minutes * 1 hr/60 minutes =

270/60 hours

divide top and bottom by 10

27/6

divide top and bottom by 3

9/2

4.5 hours

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3 years ago