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Romashka-Z-Leto [24]
2 years ago
14

Rotate the following point (- 5, 7) with a 90 degree CCW rotation

Mathematics
1 answer:
Sergio039 [100]2 years ago
5 0

Given:

The point is (-5,7).

To find:

The image of the given point after 90 degrees counter clockwise rotation.

Solution:

If a point rotated 90 degrees counter clockwise, then

(x,y)\to (-y,x)

Let the given point is P(-5,7). Using the above rule, we get

P(-5,7)\to P'(-7,-5)

Therefore, the image of the given point after 90 degrees counter clockwise rotation is (-7,-5).

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Frances read 4/5 of an article in three minutes. How much of the article did she read each minute?
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Answer:

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Step-by-step explanation:

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Simplify and determine the coefficient of (-2/5x) (5y) (-2x)
slamgirl [31]
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Can someone PLEASE help me with this question?
disa [49]

9514 1404 393

Answer:

  11

Step-by-step explanation:

The future value of the account is given by the formula ...

  A = P(1 +r/12)^(12t) . . . . principal P invested at rate r for t years

Solving for t, we find ...

  A/P = (1 +r/12)^(12t) . . . . . . . . . . . divide by P

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Divide by the coefficient of t, then fill in the numbers.

  t = log(A/P)/(12·log(1 +r/12)) = log(202800/93000)/(12·log(1 +.068/12))

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2 years ago
Simplify. 9y - 8y - y =
olga nikolaevna [1]
9y-8y-y= 9-8-1 = 0y =0

subtract all like terms
8 0
3 years ago
Lisa spends 1/5 of an hour doing her math homework and 1/3 of an hour doing her social studies homework. What fraction of an hou
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To solve this, all you have to do is add 1/5 and 1/3.
Well, you might be thinking, "But the denominators are not the same! Fractions have to have like denominators in order to be added together!" And you are right. So, all we have to do, is make them both have the same denominator. To do this, we have to multiply both the numerator and denominator by the same number to find an equivalent fraction.
For 1/5, we can multiply both the numerator and denominator by 3, to get 3/15. 
Likewise, we can multiply both the numerator and denominator of 1/3 by 5, to get 5/15.
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3/15+5/15=8/15, so she spends 8/15 hour on her math and social studies homework.
Hope I helped!
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