3 years ago

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)

You might be interested in

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,

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

$\implies C=\sin^{-1}\dfrac4{\sqrt{97}}\approx24^\circ$

5 0

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)

- PNW

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%

plz mark me as brainliest.

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

Read 2 more answers