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
erik [133]
3 years ago
8

Jaylen and six of her younger siblings have ages that are consecutive. When they moved from San Francisco to Chicago, their ages

(all seven of them) added up to 91. How old was Jaylen when they moved? Explain your thinking.
Mathematics
1 answer:
Otrada [13]3 years ago
3 0

Answer:

Jaylen was 16 years old. She's the oldest.

Step-by-step explanation:

16  Jaylen

15  sibling 1

14  sibling 2

13  sibling 3

12 sibling 4

11  sibling 5

10  sibling 6

____________

91  Total

My thinking was that I started out dividing 91 by 7. That came out 13. So I knew the oldest one had to be older than 13.

You might be interested in
Identify the solution set of the given inequality using the given replacement set.
scoundrel [369]
Another user previously answered this same question and had a good rating, his answer was as follows:

"{-9; -6.5; -5.2}" 

Which I suppose would be answer D.
- Hope it helps.

3 0
4 years ago
Isolate c in the equation a=b(1/c-1/d)
Irina-Kira [14]
A=b/c -b/d
a+b/d=b/c
(da+b)/d=b/c
db=(da+b)c
c=db/da+b
5 0
3 years ago
Simplify 108 over 308​
erik [133]

Answer:

Step-by-step explanation:

27/ 77  (Decimal: 0.350649)

8 0
3 years ago
Read 2 more answers
Solve the equation 8- 2x= -8x +14
Levart [38]

Answer:

x = -1

Step-by-step explanation:

8-2x=-8x+14

8-14=-8x+2x

-6/-6=x

x=-1

4 0
3 years ago
Read 2 more answers
1. Write the form of the partial fraction decomposition of the rational expression. Do not solve for the constants.
german

Answer:

Step-by-step explanation:

1.

To write the form of the partial fraction decomposition of the rational expression:

We have:

\mathbf{\dfrac{8x-4}{x(x^2+1)^2}= \dfrac{A}{x}+\dfrac{Bx+C}{x^2+1}+\dfrac{Dx+E}{(x^2+1)^2}}

2.

Using partial fraction decomposition to find the definite integral of:

\dfrac{2x^3-16x^2-39x+20}{x^2-8x-20}dx

By using the long division method; we have:

x^2-8x-20 | \dfrac{2x}{2x^3-16x^2-39x+20 }

                  - 2x^3 -16x^2-40x

                 <u>                                         </u>

                                            x+ 20

So;

\dfrac{2x^3-16x^2-39x+20}{x^2-8x-20}= 2x+\dfrac{x+20}{x^2-8x-20}

By using partial fraction decomposition:

\dfrac{x+20}{(x-10)(x+2)}= \dfrac{A}{x-10}+\dfrac{B}{x+2}

                         = \dfrac{A(x+2)+B(x-10)}{(x-10)(x+2)}

x + 20 = A(x + 2) + B(x - 10)

x + 20 = (A + B)x + (2A - 10B)

Now;  we have to relate like terms on both sides; we have:

A + B = 1   ;   2A - 10 B = 20

By solvong the expressions above; we have:

A = \dfrac{5}{2}     B =  \dfrac{3}{2}

Now;

\dfrac{x+20}{(x-10)(x+2)} = \dfrac{5}{2(x-10)} + \dfrac{3}{2(x+2)}

Thus;

\dfrac{2x^3-16x^2-39x+20}{x^2-8x-20}= 2x + \dfrac{5}{2(x-10)}+ \dfrac{3}{2(x+2)}

Now; the integral is:

\int \dfrac{2x^3-16x^2-39x+20}{x^2-8x-20} \ dx =  \int \begin {bmatrix} 2x + \dfrac{5}{2(x-10)}+ \dfrac{3}{2(x+2)} \end {bmatrix} \ dx

\mathbf{\int \dfrac{2x^3-16x^2-39x+20}{x^2-8x-20} \ dx =  x^2 + \dfrac{5}{2}In | x-10|\dfrac{3}{2} In |x+2|+C}

3. Due to the fact that the maximum words this text box can contain are 5000 words, we decided to write the solution for question 3 and upload it in an image format.

Please check to the attached image below for the solution to question number 3.

4 0
3 years ago
Other questions:
  • What is -4/5 + 3/20 in simplest form
    12·2 answers
  • A cylindrical water tank is being filled with a hose. The depth of the water increases by 114 feet per hour.
    9·1 answer
  • 28.5 is what percent of 20?
    7·1 answer
  • If the speed limit of a highway is 60 mph, which car exceeded the speed limit? Assume all the cars were traveling at a constant
    6·2 answers
  • PLEASE HELP ASAP!!! VERY URGENT
    8·2 answers
  • Cedric and Insha solved the same equation using the calculations below.
    9·1 answer
  • Help !!!!!!!!!!!!!!!!!!!!!
    10·1 answer
  • Write an expression using fractions to show how to determine the amount that each person will pay. Then calculate each person's
    11·2 answers
  • Please hurry I need help with this one this needs to be graphed I will give you brainlest if you are correct ​
    15·1 answer
  • Giving brainly if correct show work​
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!