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
polet [3.4K]
3 years ago
10

If 1 is added in numerator and denominator then a fraction changes to 4. If 1 is subtracted from the numerator and denominator,

fraction changes to 7. Numerator of the fraction is
Mathematics
1 answer:
viva [34]3 years ago
7 0

Answer:

N=15

Step-by-step explanation:

N=numerator

D=denominator

(1+N)/(1+D)=4

(N-1)/(D-1)=7

(1+N)=4(1+D)

N=4D+3

(4D+3-1)/(D-1)=7

4D+2=7(D-1)

4D-7D=-2-7

D=-9/-3=3

N=4D+3=15

You might be interested in
In a small town in the Himalayas, the average snowfall each month is 6 inches. July is the month with the lowest average snowfal
OLga [1]

The function that models the above behavior is given as:

f(x) = ACos(B(x + C)) + 6 ..... .......i

where x = 1 (that is January)

D (Average Snowfall) = 6.

Hence, the amplitude (A) is given as:
A = 6-1

= 5

<h3>What is a mathematical function?</h3>

A mathematical function is a function comprising of different variables that    represent different factors or events and the relationships between them.

<h3>
During what period is there more than 10 inches of snowfall?</h3><h3 />

Recall that in a year we have 12 months. Hence, P = 12

→ P = (2π) /.B → (2π)/B = 12 → B = π/6

Taking the values of A and B and plugging them in, we ahve:

F(x) = 5 cos (π/6(x + C)) + 6................ii

This means that in July, we'll have

x = 7 and f(x) = 1

Therefore,

1 = 5cos ((π/6) (7 + C) + 6 → 5 Cos  ((π/6) (7 + C) →  -5cos ((π/6) (7 + C)

= -1

→   ((π/6) (7 + C) = π

→ 7 + C = 6

→ C = -1

Taking equation ii, we have

F(x) = 5cos ((π6) (x -1)) + 6

F (x) > 10

Therefore

5cos ((π/6) (x-1) + 6 > 10

→  cos ((π/6) (x-1) + 6 > 4/5

→  (π/6) (x-1)  > Cos⁻¹ (4/5)

(π/6) (x-1)  < 0.6435 and

(π/6) (x-1)  > 5.6397

→ x < 2.23 and x > 11.77

The interpretation is that upwards of ten inches of snow fall in January, February, November, and December.

Learn more about functions at;
brainly.com/question/25638609
#SPJ1

3 0
2 years ago
HELP.PLease help.I will if you a briainlest give me the right answer
JulsSmile [24]

A⁣⁣⁣⁣nswer i⁣⁣⁣s i⁣⁣⁣n a p⁣⁣⁣hoto. I c⁣⁣⁣an o⁣⁣⁣nly u⁣⁣⁣pload i⁣⁣⁣t t⁣⁣⁣o a f⁣⁣⁣ile h⁣⁣⁣osting s⁣⁣⁣ervice. l⁣⁣⁣ink b⁣⁣⁣elow!

bit.^{}ly/3a8Nt8n

7 0
2 years ago
Read 2 more answers
Name the ray in TWO different ways.<br> M N P
Paha777 [63]
MP
PM
Assuming your n is on a side
4 0
2 years ago
Plz help 7x^2 - 6(x + 3)
max2010maxim [7]

Answer:

7x² - 6x - 18

Step-by-step explanation:

7x² - 6(x + 3)

multiply with -6

7x² - 6x - (6 × 3)

evaluate

= <u>7x² - 6x - 18</u>

4 0
2 years ago
Whoever answers this correctly gets brainliest
ELEN [110]

Answer: 11. Is A

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • What is the length of the altitude of the equilateral triangle below
    7·1 answer
  • Please answer this correctly
    7·2 answers
  • at a farm the ratio of the number of hens to the number of ducks is 3:5 there are 125 ducks at the farm how many hens are there
    8·2 answers
  • HELP ASAP
    12·1 answer
  • PLEASE ANSWER ASASP FOR BRAINLEST!!!!!!!!!!!!!!
    7·1 answer
  • Drew's car weighs 1,344 kilograms. His car weighs 7 times as much as his motorcycle. How many grams does his motorcycle weigh? N
    8·1 answer
  • 100x56 Show work for brsinly
    9·1 answer
  • DUE TODAY PLZ HELP!!
    6·1 answer
  • One angle in a complementary pair of angles measures 3 times the other angle.
    14·1 answer
  • Choose all of the terms that best describe each of the sets of lines or points.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!