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
ruslelena [56]
3 years ago
15

PLEASE HELLLP!!!!! If x+7=2y and y=2x−1, what is the value of y? (NOT 13)

Mathematics
1 answer:
oee [108]3 years ago
5 0

Answer:

(C) 5

Step-by-step explanation:

x+7=2y

<em>Subtract 7 from both sides</em>

x=2y-7

2y-7=x

<em>Multiply both sides by 2</em>

4y-14=2x

y=2x−1

<em>Add 1 to both sides</em>

y+1=2x

<u>Combine equations:</u>

y+1=4y-14

<em>Add 14 to both sides</em>

y+15=4y

<em>Subtract y from both sides</em>

15=3y

3y=15

<em>Divide both sides by 3</em>

y=5

<u>The answer is </u><u>(C) 5.</u>

You might be interested in
4x - 5 = 7 solve for X
Morgarella [4.7K]

Answer:

x=3

Step-by-step explanation:

move the constant to the right hand side and change

8 0
2 years ago
Read 2 more answers
3cis(5pi/4) in polar form
madreJ [45]
Rectangular form:
z = -2.1213203-2.1213203i

Angle notation (phasor):
z = 3 ∠ -135°

Polar form:
z = 3 × (cos (-135°) + i sin (-135°))

Exponential form:
z = 3 × ei (-0.75) = 3 × ei (-3π/4)

Polar coordinates:
r = |z| = 3 ... magnitude (modulus, absolute value)
θ = arg z = -2.3561945 rad = -135° = -0.75π = -3π/4 rad ... angle (argument or phase)

Cartesian coordinates:
Cartesian form of imaginary number: z = -2.1213203-2.1213203i
Real part: x = Re z = -2.121
Imaginary part: y = Im z = -2.12132034
8 0
2 years ago
It takes 4 pounds of apples to make 6 cups of applesauce.
Serjik [45]

Answer:

Step-by-step explanation:

4lbs of apples to 6 cups of apple sauce

we can write this as 2:3

the correct choices: 6:9 and 14:21

4 0
3 years ago
Help pls I need help lol it’s quite easy for rlly smart ppl
mr_godi [17]

Answer:

(2,1) (7,1) (7,5) (2,5)

Step-by-step explanation:

Just line up the dots on the x axis and y axis

Vertexes are the points or "corners" of the shape, and in your case, that square.

I hope this helped :D

8 0
2 years ago
G
kvv77 [185]

Answer:

Girls in Mr. Chang's class: 28 - 21 ; # girl students = # total students - # boy students ; 7 girl students.

Boys in Mr. Chang's class: 28 - 7 ; # boy students = # total students - girl students ; 21 boy students.

8 0
2 years ago
Other questions:
  • You randomly choose one of the tiles. Without replacing the first tile, you choose a second tile. Find the probability of the co
    8·1 answer
  • Calculate how much the insurance company would pay in benefits in the following case.
    8·2 answers
  • What is the answer to 4/7 x - 3 =6
    8·2 answers
  • Un motor de combustión interna que cumple el ciclo ideal de Otto, funciona con aire como gas ideal. Tras el proceso de admisión
    10·1 answer
  • Evan is training for a race on Saturday. He wants to run a total of 12 miles total for the week before the race. On Monday he ra
    5·1 answer
  • Write the fraction as a decimal
    14·1 answer
  • 2 lines intersect. Where the 2 lines intersect, 4 angles are created. Labeled clockwise, from uppercase right: angle 1 (3 x minu
    13·1 answer
  • 6) How are a parallelogram and a trapezoid different?
    5·2 answers
  • The LCM of 18 30 and 42​
    13·1 answer
  • Please solve it this is very important.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!