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
jenyasd209 [6]
2 years ago
8

5 —— —— i need help!! ————- math geniuses pls help me!

Mathematics
1 answer:
34kurt2 years ago
5 0

Answer:

C

Step-by-step explanation:

  x = 7 cos (2pi/3)            y =  7 sin (2pi/3)

  x = -7/2                          y = 7 sqrt(3) /2

You might be interested in
Which expression is equivalent to 6(4(6x-4y)-5) ?
iren2701 [21]

Answer:

144x - 96y - 30

Step-by-step explanation:

<u>Step 1:  Distribute </u>

6(4(6x - 4y) - 5)

6((4 * 6x) + (4 * -4y) - 5)

6(24x - 16y - 5)

<u>Step 2:  Distribute again </u>

<u />(6 * 24x) + (6 * -16y) + (6 * -5)

144x - 96y - 30

Answer:  144x - 96y - 30

8 0
3 years ago
100 POINTS ANSWER HURRY
choli [55]
X-3y=18
X always has a 1 in front of it so
1x-3y=18
-1x      -1x         You will have to get -3y by its self.
-3y=-1x + 18      when you move 1x over the = it turns into a -1x
/-3    /-3      /-3      divided everything by -3 to get y by its self
Y= 1/3 - 6            and that is you answer
4 0
3 years ago
Read 2 more answers
(1 point) A rock is thrown into a still pond and causes a circular ripple. If the radius of the ripple is increasing at a rate o
PtichkaEL [24]

Answer:

8pi feet per second

Or, 25.1 feet per second (3 sf)

Step-by-step explanation:

C = 2pi×r

dC/dr = 2pi

dC/dt = dC/dr × dr/dt

= 2pi × 4 = 8pi feet per second

dC/dt = 25.1327412287

8 0
3 years ago
50 points! I will mark brainliest! Random answers will be reported :)
ASHA 777 [7]

Answer:

x=10

Step-by-step explanation:

Notice that all three sides of the given triangle has one tick mark.

This means that all three sides are congruent, meaning that we have an equilateral triangle.

And for equilateral triangles, all three angles are also congruent.

So:

\angle CBA=\angle BAC=\angle ACB

Also, recall that the interior angles of a triangle is always 180. Thus:

\angle CBA+\angle BAC+\angle ACB=180

Substitute:

\angle CBA+\angle CBA+\angle CBA=180

Combine like terms:

3\angle CBA=180

Substitute:

3(6x)=180

Multiply:

18x=180

Thus:

x=10

And we are done!

3 0
3 years ago
PLZZZZZZZ HELPPPP
dolphi86 [110]

Answer:

The correct option is 1.

Step-by-step explanation:

It is given than the area of the triangle ABC is 46cm².

Area of a triangle is

A=\frac{1}{2}\times base\times height

Base of the triangle is AB and height of the triangle is CD.

A=\frac{1}{2}\times AB\times CD

A=\frac{1}{2}\times AB\times 8

A=4\times AB

The area of the triangle is 46cm².

46=4\times AB

AB=\frac{46}{4}

AB=11.5

Therefore the length of side AB is 11.5 cm. Option 1 is correct.

4 0
3 years ago
Other questions:
  • PLEASE HELP! Do the angles stay the same degrees when the shape is reduced or enlarged?
    6·1 answer
  • 2xy + 5 - 8 +3xy -y +7 + 3 y= ___ xy -8 ____ + ___ y +___ <br> I don't understand help please :*
    13·1 answer
  • 3 Which expression is equivalent to<br> 19 - 27?
    8·2 answers
  • What is the simple list form of 2/1240
    5·2 answers
  • 1) There were 11 bales of hay in the barn. Jason stacked more bales in the barn
    13·1 answer
  • Mr. and Mrs. Preston and their two children are very excited about their upcoming
    5·1 answer
  • Help please!ill give brainliest
    11·1 answer
  • EXPERTS CALLING IN ALL EXPERTS.
    8·1 answer
  • Will give brainiest lol
    9·2 answers
  • Help me graph the numbers
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!