1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
olya-2409 [2.1K]
3 years ago
5

Find the coordinates of the vertices of a triangle after a 90 degree rotation counterclockwise about the origin.

Mathematics
1 answer:
Oksana_A [137]3 years ago
7 0

Step-by-step explanation:

The rule for a 90 degree counterclockwise is

(x,y) -> (-y,x)

so

C(-1,2) -> C'(-2,-1)

D(3,5) -> D'(-5,3)

E(1,2) -> E'(-2,1)

You might be interested in
A ÷ (2 + 1.5) for a = 14<br><br> dont spam links and this is 6th grade work
IRINA_888 [86]

Answer:

49

Step-by-step explanation:

2+1.5=3.5

49/3.5=14

4 0
2 years ago
Read 2 more answers
A motorboat travels 165 kilometers in 3 hours going upstream and 510 kilometers in 6 hours going downstream. What is the rate of
nikitadnepr [17]
<h3>Rate of the boat in still water is 70 km/hr and rate of the current is 15 km/hr</h3><h3><u>Solution:</u></h3>

Given that,

A motorboat travels 165 kilometers in 3 hours going upstream and 510 kilometers in 6 hours going downstream

Therefore,

Upstream distance = 165 km

Upstream time = 3 hours

<h3><u>Find upstream speed:</u></h3>

speed = \frac{distance}{time}\\\\speed = \frac{165}{3}\\\\speed = 55

Thus upstream speed is 55 km per hour

Downstream distance = 510 km

Downstream time = 6 hours

<h3><u>Find downstream speed:</u></h3>

speed = \frac{510}{6}\\\\speed = 85

Thus downstream speed is 85 km per hour

<em><u>If the speed of a boat in still water is u km/hr and the speed of the stream is v km/hr, then</u></em>

Speed downstream = u + v km/hr

Speed upstream = u - v km/hr

Therefore,

u + v = 85 ----- eqn 1

u - v = 55 ----- eqn 2

Solve both

Add them

u + v + u - v = 85 + 55

2u = 140

u = 70

<em><u>Substitute u = 70 in eqn 1</u></em>

70 + v = 85

v = 85 - 70

v = 15

Thus rate of the boat in still water is 70 km/hr and rate of the current is 15 km/hr

3 0
3 years ago
Lowest common multiple of 12,18,56
Ira Lisetskai [31]

Step-by-step explanation:

12 = 2 × 2 × 3

18 = 2 × 3 × 3

56 = 2 ×2 × 2 × 7

Now

Common factor = 2

Remaining factor = 2 × 3 × 2 × 3 × 7

LCM = RF × CF

= 504

hence the lCM of 12 , 18 and 56 is 504...

...

8 0
1 year ago
Read 2 more answers
What is the equation to the quadratic function that has zeros at -12 and 7?
icang [17]
I believe the answer to this question is the 3rd one
7 0
3 years ago
Eric and Linda are paid ​$41.25 for their work. Eric worked 2.5 ​hours, and Linda worked 3 hours. They split the money according
arsen [322]

Answer:$18.75

Step-by-step explanation:

First, find how much they get paid for working half a hour by dividing 9 from 41.25 to get 3.75.

Then, multiply 3.75 by 5 to get 18.75.

Eric's share is $18.75.

3 0
2 years ago
Other questions:
  • An event has a 35% chance of occurring. What is the probability that the event will NOT occur?
    11·2 answers
  • For every bag of trail mix the local Scout Guide troop sells,they earn $0.45. write an expression to represent this situation.
    9·1 answer
  • A class of 144 students voted for class president. Three fourths of the students voted for you. The student to go to for you, fi
    11·1 answer
  • 3. The length of a living room is 12 feet and its width is 10.5 feet. The length of the room is being
    6·1 answer
  • Solve for y 8(3y-5)=9(y-5)
    14·1 answer
  • What is the distance between the points (-6, 7) and (-1, 1) ? Round to the nearest whole number
    9·1 answer
  • A trade magazine routinely checks the​ drive-through service times of​ fast-food restaurants. Upper AA 9595​% confidence interva
    8·1 answer
  • 80 times 30 plus 60 equals
    7·2 answers
  • Help..................................
    6·2 answers
  • Annie wants to order 30 custom cupcakes for a party. The Sunflower Bakery sells cupcakes for $18 per dozen cupcakes. The Whaler
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!