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
Alexus [3.1K]
3 years ago
6

Ben is 20 years older than Daniel. Ben and Daniel first met two years ago. Three years ago, Ben was 33 times as old as Daniel.

Mathematics
2 answers:
irga5000 [103]3 years ago
5 0

Answer:

Ben is 33 years old

Step-by-step explanation:

Let Ben’s age = B

Let Daniel’s age = x


B = x + 20  (20 years older than Daniel)


Their ages 3 years ago:

B = 3x  (also given in problem)

B = x + 20  (given in problem)

x + 20 = 3x  (Since both equations are equal to B, set them equal to each other)

20 = 2x (simplify)

x = 10

B = 10 + 20 = 30


Their ages now:

Add 3 to their "ages three years ago"

New x = Daniel’s age = old age + 3 = 10 + 3 = 13 years old

B = Ben’s age = old age + 3 = 30 + 3  = 33 years old


tatuchka [14]3 years ago
3 0

Answer: 33

<u>Step-by-step explanation:</u>

           <u>Today </u>                <u>3 years ago</u>

Ben:   x + 20                  (x + 20) - 3    

Dan:     x                          x - 3


  3 years ago, Ben was 3 times as old as Daniel

⇒  (x + 20) - 3  = 3(x - 3)

       x + 17        = 3x - 9

             17        = 2x - 9

             26       = 2x

             13        = x


Today, Ben = x + 20

                   = 13 + 20

                   = 33

You might be interested in
Pls help 19 a. 100 pts
Len [333]

Answer:

dkdkkdkddkdkdkddkdkdkkkdkkkkkdkdkd

Step-by-step explanation:

3 0
2 years ago
assume x and y are both differentiable functions of t. find dx/dt given x=-1 and dy/dt=8 for the relation: 4x^2+3y^3=28
melomori [17]

Given:

x and y are both differentiable functions of t.

4x^2+3y^3=28

x=-1\text{ and }\dfrac{dy}{dt}=8

To find:

The value of \dfrac{dx}{dt}.

Solution:

We have,

4x^2+3y^3=28       ...(i)

At x=-1,

4(-1)^2+3y^3=28

4+3y^3=28

3y^3=28-4

3y^3=24

Divide both sides by 3.

y^3=8

Taking cube root on both sides.

y=2

So, y=2 at x=-1.

Differentiate (i) with respect to t.

4(2x\dfrac{dx}{dt})+3(3y^2\dfrac{dy}{dt})=0

Putting x=-1, y=2 and \dfrac{dy}{dt}=8, we get

4(2(-1)\dfrac{dx}{dt})+3(3(2)^28)=0

-8\dfrac{dx}{dt}+9(4)(8)=0

-8(\dfrac{dx}{dt}-9(4))=0

Divide both sides by -8.

\dfrac{dx}{dt}-36=0

\dfrac{dx}{dt}=36

Therefore, the value of 4x^2+3y^3=28 is 36.

6 0
2 years ago
A sock drawer has 17 folded pairs of socks, with 5 pairs of white, 8 pairs of black and 4 pairs of blue. What is the probability
jolli1 [7]

Answer:

26.4%

Step-by-step explanation:

PLS GIVE BRAINLIEST

8 0
2 years ago
If p + q = 36, and p -q = 20, then q = ?
Andrew [12]

Answer:

q = 8

Step-by-step explanation:

Given the 2 equations

p + q = 36 → (1)

p - q = 20 → (2)

Add the 2 equations term by term

2p = 56 ( divide both sides by 2 )

p = 28

Substitute p = 28 into (1)

28 + q = 36 ( subtract 28 from both sides )

q = 8

5 0
2 years ago
What single decimal multiplier would you use to decrease by 2% followed by a 3% decrease?
Bumek [7]

<em><u>0.9506</u></em>

Step-by-step explanation:

here's the easy explanation:

We have 2% and 3%.

Take them both away from 100 since we're decreasing!

<em>100 - 2 = 98</em>

<em>100 - 3 = 97</em>

Divide them both by 100.

<em>98 --> 0.98</em>

<em>97 --> 0.97</em>

Times them both together!

<em>0.98x0.97 = 0.9506</em>

<em>Hope </em><em>this </em><em>helps </em><em>you</em><em>></em><em>^</em><em>_</em><em>^</em><em><</em>

<em>#</em><em>b</em><em>r</em><em>a</em><em>i</em><em>n</em><em>l</em><em>y</em><em>e</em><em>veryday</em><em>:</em><em>)</em>

4 0
2 years ago
Other questions:
  • Plot 4/7 on the number line
    7·2 answers
  • What do members of a population have in common? Select all that apply
    6·2 answers
  • Plzzzzz helpppp <br> If u can help me plz do
    12·2 answers
  • Profit 504 thousand more than -141 thousand
    11·1 answer
  • What is the y- intercept of the given graph​
    15·1 answer
  • In how many ways can a
    5·1 answer
  • If the number 8.2×109 is written in standard notation, it is the number 82 followed by how many zeros?
    11·1 answer
  • Forty-five more than a number​
    14·2 answers
  • PLEASE HELP -7y + 11 = 75 + y
    13·1 answer
  • 4<br> How many 3-cup servings are in 4 cups?<br> A. 1/2<br> B. 2/<br> C. 4<br> D. 12
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!