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
Semenov [28]
3 years ago
11

Find y when x=77, if y varies inversly as x, and y = 23 when x = 115.

Mathematics
1 answer:
Eduardwww [97]3 years ago
7 0

The required value of y is 2645 / 77 when x = 77.

Step-by-step explanation:

1. Let's check the information given to answer:

if y varies inversely as x, and y = 23 when x = 115. Find y when x=77

2. What is y when x = 77?

As the statement "y varies inversely as x" translates into y = k/x

If we let y = 23 and x = 115, the constant of variation becomes

        23 = k ÷ 115

        k = 23 × 115

        k = 2645

Thus the specification equation is y = 2645  ÷ x . Now, letting x = 77, we obtain

          y = 2645 ÷ x

          y = 2645 ÷ 77

<u>So, The required value of y = 2645 / 77 when x = 77</u>

<u></u>

<u>#learnwithBrainly</u>

You might be interested in
Brian has reduced his cholesterol level by 20% by following a strict diet and regular exercise. If his original level was 220, w
In-s [12.5K]
220 x 20% (.20) = 44
220-44=176
3 0
3 years ago
Read 2 more answers
A painter can paint 1212 a room in 11212 hours. How many of the same-sized rooms can he paint per hour?
shutvik [7]
He can paint around 9.25 rooms an hour.  Please mark Brainliest!!!
5 0
3 years ago
Working as an insurance salesperson, Ilya earns a base salary and a commission on each new policy, so Ilya’s weekly income, II,
Morgarella [4.7K]

Answer:

l(n) = 80n + 520

Step-by-step explanation:

From the information given in the  question, there is a relationship between the number of new policy sold, n, and earning, I

           For 3 new policies, he earned $760

           For 5 new policies, he earned $920.

The rate of change of IIya's earning with respect to number of new policy sales is

             m = \frac{dI}{dn}

             m = \frac{920 - 760}{5 - 3}

             m = $160 / 2 policies

             m = $80 / policy

The linear equation for the relationship is;

             l(n) = mn + b

I(n) is Ilya’s weekly income which is a function of the number of new policies, n

m is the rate of change of I with respect to n

n is the number of new policies,

b is the intial function which is IIya's income when n equals zero

Recall, Ilya earns a commission of $80 for each policy sold during the week. (m = $80 per policy)

                 l(n) = 80n + b

To complete the relationship l, we need to calculate the initial value b.

For 3 new policies, he earned $760,

             760 = 80(3) + b

             760 = 240 + b

             b = 760 - 520

             b = 520

The final equation is l(n) = 80n + 520

From the final equation, we can deduce that Ilya’s weekly salary is $520 and he earns an additional $80 commission for each new policy sold.

6 0
3 years ago
The difference between x and 4 is greater than 14.
VikaD [51]

Answer:

the answer is any number above 18

3 0
3 years ago
Read 2 more answers
ASAP!!! PLEASE HELP AS SOON AS POSSIBLE...and correctly Thank you
loris [4]

5(w+4)=35

5w+20=35

5w=15

w=3


7 0
3 years ago
Other questions:
  • Please help urgent!
    7·2 answers
  • Find center radius 3x squared + 3y squared + 30x - 42y- 141=0
    10·1 answer
  • Transform the equation to isolate x: ax = bx + 1. How is
    9·2 answers
  • Use factoring to solve for all solutions of the quadratic equation.
    15·1 answer
  • Square root of 4 plus 45 over 4 plus 125 over 25
    12·1 answer
  • Jada wants to buy a picture frame that costs $6.48. She has $3.50.
    13·1 answer
  • Terry has a credit card that uses the average daily balance method. For the first 18 days of one of his billing cycles, his bala
    11·1 answer
  • Jamie is x years old. His friend ana is the same age. Write an expression to represent the sum of jamie and ana's ages
    8·2 answers
  •  please  help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!                 
    13·1 answer
  • PLEASE HELP ME 12 POINTS
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!