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lianna [129]
3 years ago
14

What is the image of the point (-2,-7 after a rotation of 90

Mathematics
1 answer:
Nata [24]3 years ago
5 0
(7,-2)
to find the new coordinates we have (x,y)->(-y,x)
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Im stuck on this one
nika2105 [10]

ABC is a right triangle, so by Pythagoras' theorem,

AB^2+AC^2=BC^2\implies BC=\sqrt{4^2+9^2}=\sqrt{97}

Then by the law of sines,

\dfrac{\sin A}{BC}=\dfrac{\sin C}{AB}\iff\dfrac1{\sqrt{97}}=\dfrac{\sin C}4\implies\sin C=\dfrac4{\sqrt{97}}

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3 years ago
Factorize -pq -pr +mq +mr​
trapecia [35]

Answer:

(q + r) (m - p)

Explanation:

  • -pq - pr + mq + mr​
  • Factor out common term 'p'

= -p(q + r) + mq + mr

  • Factor out common term 'm'

= -p(q + r) + m(q + r)

  • Factor out common term '(q + r)'

= (q + r) (-p + m)

  • (q + r) (m - p)

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5 0
3 years ago
Convert 7-11 to a percent. round to the nearest hundredth
n200080 [17]
7/11 is 0.006 percent.
5 0
3 years ago
Priya has completed 9 eczema questions.THis is 60% of the questions on the exam? how many questions are on the exam?
qwelly [4]

Answer:

15 questions

Step-by-step explanation:

9x100=900

900/60=15

9/15=60%

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7 0
3 years ago
Find the median of these numbers:4,2,7,4,3 *
sattari [20]

Answer:

The Median of those numbers is 4

Step-by-step explanation:

3 0
3 years ago
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