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
lorasvet [3.4K]
3 years ago
13

HELP PLEASE

Mathematics
2 answers:
crimeas [40]3 years ago
8 0

Let Jeff's age = x and Ben's age = x - 9.

(x + 10) + (x -9 + 10) = 67

x + 10 + x + 1 = 67

2x + 11 = 67

2x = 56

x = 28

x - 9 = 28 - 9 = 19

Jeff is 28 years old, and Ben is 19 years old.

diamong [38]3 years ago
5 0
If Jeff is x years old, Ben is x - 9 years old.

Ten years later, Jeff would be x + 10 years old and Ben would be (x - 9) + 10 years old.

x + 10 + (x - 9) + 10 = 67
2x + 11 = 67
2x = 56
x = 28

Jeff is 28 right now and Ben is 19 right now.
You might be interested in
Answer my question please
Viktor [21]
First number multiply by 3 for the next number subtract 10 and repeat process
6 0
3 years ago
Which letter has horizontal not vertical symmetry H, W, Y, E
Alex777 [14]
The best answer out of all of that is W if I’m right
8 0
3 years ago
Read 2 more answers
The exponential function f(x) has a horizontal asymptote at y = 3. What is the
fenix001 [56]

Answer:

The function diverges to +\infty.

Step-by-step explanation:

The function diverges to +\infty.

3 0
3 years ago
Solve the following differential equations or initial value problems. In part (a), leave your answer in implicit form. For parts
shepuryov [24]

Answer:

(a) (y^5)/5 + y^4 = (t^3)/3 + 7t + C

(b) y = arctan(t(lnt - 1) + C)

(c) y = -1/ln|0.09(t + 1)²/t|

Step-by-step explanation:

(a) dy/dt = (t^2 + 7)/(y^4 - 4y^3)

Separate the variables

(y^4 - 4y^3)dy = (t^2 + 7)dt

Integrate both sides

(y^5)/5 + y^4 = (t^3)/3 + 7t + C

(b) dy/dt = (cos²y)lnt

Separate the variables

dy/cos²y = lnt dt

Integrate both sides

tany = t(lnt - 1) + C

y = arctan(t(lnt - 1) + C)

(c) (t² + t) dy/dt + y² = ty², y(1) = -1

(t² + t) dy/dt = ty² - y²

(t² + t) dy/dt = y²(t - 1)

(t² + t)/(t - 1)dy/dt = y²

Separating the variables

(t - 1)dt/(t² + t) = dy/y²

tdt/(t² + t) - dt/(t² + t) = dy/y²

dt/(t + 1) - dt/(t(t + 1)) = dy/y²

dt/(t + 1) - dt/t + dt/(t + 1) = dy/y²

Integrate both sides

ln(t + 1) - lnt + ln(t + 1) + lnC = -1/y

2ln(t + 1) - lnt + lnC = -1/y

ln|C(t + 1)²/t| = -1/y

y = -1/ln|C(t + 1)²/t|

Apply y(1) = -1

-1 = ln|C(1 + 1)²/1|

-1 = ln(4C)

4C = e^(-1)

C = (1/4)e^(-1) ≈ 0.09

y = -1/ln|0.09(t + 1)²/t|

8 0
3 years ago
Which of the following equations represents a line with a negative slope and a negative y-intercept?
Luden [163]
The answer is A because u can subtract the 3x to get 2y by itself then divide by 2 to completely get y by itself and it would be y=-3/2x - 9/2
5 0
3 years ago
Other questions:
  • What do you think the answer is, I really need help, please and thank you, Hurry
    9·2 answers
  • Is 2yx – 3y + 2x = 0 a linear function or not a linear function
    13·1 answer
  • Find the area of the circle. Round your answer to the nearest thousandth.
    5·1 answer
  • 40.An instrument that is inconsistent in measuring a variable would lack: trustworthiness credibility triangulation reliability
    8·1 answer
  • Evaluate each expression.
    5·1 answer
  • In conducting an ABC analysis, the A column should be tasks that are ____, B should be tasks that are _____, and C should be tas
    8·1 answer
  • Use the equation and type the ordered-pairs.
    6·2 answers
  • 550 + 550 + 650 + 550 + 600 = ?
    8·1 answer
  • Greg calculated that he had to drive at least 50 miles per hour on the highway to get his destination in the time that he has. w
    8·1 answer
  • Factor the expression using the GCF.<br> 42 – 12 =
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!