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
lianna [129]
3 years ago
12

Plsss help I don't know how to graph I will give brainiest!

Mathematics
1 answer:
Anastasy [175]3 years ago
4 0

Answer: (2, 5)

Step-by-step explanation:

y = 2x + 1 y = 4x − 3

Eliminate the equal sides of each equation and combine.

2x + 1 = 4x − 3

Solve 2x + 1 = 4x − 3 for x.

Move all terms containing x to the left side of the equation.

Subtract 4x from both sides of the equation.

2x + 1 − 4x = −3

Subtract 4x from 2x.

−2x + 1 = −3

Move all terms not containing x to the right side of the equation.

Subtract 1 from both sides of the equation.

−2x = −3 − 1

Subtract 1 from −3.

−2x = −4

Divide each term by −2 and simplify.

x = 2

Evaluate y when x = 2.

Substitute 2 for x. y = 4 (2) − 3

Simplify 4 (2) − 3.

Multiply 4 by 2.

y = 8 − 3

Subtract 3 from 8.

y = 5

The solution to the system is the complete set of ordered pairs that are valid solutions.

(2, 5)

The result can be shown in multiple forms.

Point Form:

(2, 5)

Equation Form:

x = 2, y = 5

You might be interested in
Simone takes dance lessons. Her shoes cost $150 per year, her tights and leotards cost $70 per year, her hair accessories cost $
KATRIN_1 [288]
Ok so all you do is add 150+70+15+1000. That equals to $1235
6 0
3 years ago
What is the area of the sector ?​
worty [1.4K]

They forget to say "not to scale".  I'm guessing this is trig because I don't see another way to do it.

Let's consider x=chord PQ first.  By the Law of Cosines

x^2 = 3^2 + 5^2 - 2(3)(5) \cos 81^\circ = 34 - 30\cos 81^\circ

We have an isosceles triangle formed by two radii of 9 cm and x=PQ.  By the Law of Cosines again,

x^2 = 9^2 + 9^2 - 2(9)(9) \cos B

x^2 = 162 - 162 \cos B

\cos B = \dfrac{162 - x^2}{162} = 1 - \dfrac{x^2}{162}

\cos B = 1 - \dfrac{34 - 30\cos 81^\circ}{162}

B = \arccos \left(1 - \dfrac{34 - 30\cos 81^\circ }{162} \right)

The area of the circle is the fraction given by the angle,

A = \dfrac{B}{360^\circ} \pi r ^2

A \approx \dfrac{ \arccos \left(1 - \dfrac{34 - 30\cos 81^\circ}{162} \right) }{360} (3.142)9^2

A\approx 24.7474332960707

Answer: 24.7 sq cm

8 0
3 years ago
Help a sister out-<br><br> (4x^3 − 3x^2 + 2x − 6) - (7x^2 + 2x + 1)
____ [38]

Answer

4x^{3}−10^{2}−7

5 0
3 years ago
Read 2 more answers
Find an equation of the line through (3,7) and parallel to y=3x-1
iren2701 [21]

Answer:

y = 3x -2

Step-by-step explanation:

If the line is parallel, that means it has the same slope. The given equation had a slope of 3, so the new line must also have a slope of 3.

You can plug the given coordinates into the slope-intercept form with a slope of 3 to find your answer.

y = m*x + b

7 = 3*3 + b

7 = 9 + b

-2 = b

y = 3x -2

7 0
3 years ago
Help plz:))) I’ll mark u brainliest
dybincka [34]

Answer:

a

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • Hallar el menor de tres números consecutivos, si la suma de la mitad del número menor más la tercera parte del número mayor exce
    12·1 answer
  • Fill in the blank. tripling the radius of a sphere increases the surface area by a factor of ___________.
    7·1 answer
  • Multiply the polynomial expressions below. (7x + 5)(2x3 – 4:2 + 9x – 3) - O A. 914 - 1103 + 16x2 + 11x 15 OB. 1414 - 1813 + 4312
    5·1 answer
  • In a sample of 60 electric motors, the average efficiency (in percent) was 85 and the standard deviation was 2. Section 05.01 Ex
    9·1 answer
  • Gwen Mows 1/4 acre 3/4 hour. How many acres will Gwen mow in one hour
    13·1 answer
  • The graph of g is a vertical stretch by a factor of 4 and a reflection in the x-axis, followed by a translation 2 units up of th
    12·1 answer
  • I WILL GIVE THE BRAINLIST V2
    13·2 answers
  • 15. x2 + 11x + 10 = 0
    11·1 answer
  • Solve the system: <br> X + 2y=28<br> Y= 3x
    5·1 answer
  • Which list could represent the four angle measures of a quadrilateral if one angle measures 125°?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!