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
Serjik [45]
3 years ago
6

Given the literal equation ab/a+b = c , with b = –1 + a, what is the value of c if a = 5?

Mathematics
2 answers:
Elan Coil [88]3 years ago
6 0

Answer:

Option A

Step-by-step explanation:

The given literal equation is \frac{ab}{a+b}=c

with b = ( a-1 )

We have to calculate the value of c when a = 5  

Now we put b = ( a - 1 ) in literal equation

\frac{a(a-1)}{a+(a-1)}=c

c=[\frac{a(a-1)}{2a-1}]

Now we have to calculate the value of c when a = 5

c=\frac{5(5-1)}{(2*5)-1}

\frac{5\times 4}{10-1}

=\frac{20}{9}

Option A is the answer.

Nesterboy [21]3 years ago
3 0

The solution would be like this for this specific problem:

ab/a+b = c 

b = -1 + a

for c:
<span>(5(-1 + 5))/(5 + (-1 +5))
</span><span>5(4)/ 5 + 4
</span><span>20 / 9
</span>

<span>The correct answer between all the choices given is the first choice or letter A. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.</span>



You might be interested in
How many solutions does the system have? <br> y=−2x+1 <br> y=−2x^2+1
balu736 [363]

Answer:

The system has two distinct solutions.

Step-by-step explanation:

The given system of equations are:


y=-2x+1--(1)

and

y=-2x^2+1---(2)


In order to determine the number of solutions the two equations have, we need to equate the two equations to obtain,



-2x^2+1=-2x+1


We now group all terms on the left hand side and equate everything to zero.

-2x^2+2x=0

x^2-x=0


This is now a quadratic equation in x^2 with a=1,b=-1,c=0.

At this stage we check the number of solutions using the discriminant.

D=b^2-4ac


\Rightarrow D=(-1)^2-4(1)(0)=1


Since the discriminant is greater than zero, the equation will have two distinct roots.

Therefore the system of equations has exactly two distinct solutions.


If you wish to see these solutions, you can continue as follows;

We factor x to obtain,

x(x-1)=0


\Rightarrow x=0,x-1=0



\Rightarrow x=0,x=1


When x=0,y=-2(0)+1


Then we have,

x=0,y=1


When x=1,y=-2(1)+1


Then we have,

x=0,y=-1


See graph






8 0
3 years ago
P varies directly as q. When q = 31.2, p = 20.8. Find p when q = 15.3.
d1i1m1o1n [39]

15.3 * 20.8 / 31.2

= 318.24 / 31.2

= 10.2

Answer: when q = 15.3 , p = 10.2

6 0
3 years ago
Trapezoid PSTK is isosceles. SK = 20, SH = 12, If ST = 1 4 HK, find HK, APTSK, m∠P, and PS. Find HK, Area of pstk, HK and PS
Vikentia [17]

Answer:

HK = 16

Step-by-step explanation:

12^2+x^2=20^2

x = HK

5 0
3 years ago
Are these right please help bc I’m on my last attempt.
likoan [24]
I calculated and got 314.16
4 0
3 years ago
I’ve been stressing over this problem can anyone help how my answer would be 1
Kazeer [188]

Answer:

29° + (x - 5)° = 180°

29 + x - 5 = 180

29 - 5 + x = 180

24 + x = 180

24 - 24 + x = 180 - 24

x = 156

Step-by-step explanation:

A straight line is 180°.

Set all angles (29° and (x - 5)°) equal to 180°.

Then solve for x.

3 0
3 years ago
Read 2 more answers
Other questions:
  • On Tuesday Donovan earned $9 for 2 hours of babysitting on Saturday he babysat for the same family and earned 31.50 how may hour
    8·2 answers
  • Did cherish use algebra tiles to correctly represent the product of
    14·1 answer
  • At the grocery store, 6 pints of ice cream cost $7.74. How much would 30 pints of ice cream cost?
    13·1 answer
  • Find the area of the isosceles triangle <br> Slope: 13cm<br> Base: 10cm
    6·1 answer
  • What is 6700/8 + 76 - 267
    13·2 answers
  • Point k lies at (- 3, 4), Point is reflected over the y-axis and then translated 7 units down to produce k’. which rule could we
    10·1 answer
  • The number of children in each family on a particular city block is shown in the dot plot:
    5·1 answer
  • Leo is roller blading at w speed of 200 meters per minute.How long will it take him to roller-blade 1 km?
    6·1 answer
  • Suppose that 0.10 of population is colourblind if 25of sample drown from this population find probability that at least 7 have c
    8·1 answer
  • What is the slope of the line through (-5, 13) and (2,-1)
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!