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
likoan [24]
2 years ago
6

Divide 72 in the ratio 7:2

Mathematics
1 answer:
Ksivusya [100]2 years ago
6 0
Do you mean the ratio 1:2
You might be interested in
9000 is 10 times as much as?
Zanzabum

Answer:

900

Step-by-step explanation:

4 0
3 years ago
Pleasantburg has a population growth model of P(t)=at2+bt+P0 where P0 is the initial population. Suppose that the future populat
yulyashka [42]

Answer:

The population will reach 34,200 in February of 2146.

Step-by-step explanation:

Population in t years after 2012 is given by:

P(t) = 0.8t^{2} + 6t + 19000

In what month and year will the population reach 34,200?

We have to find t for which P(t) = 34200. So

P(t) = 0.8t^{2} + 6t + 19000

0.8t^{2} + 6t + 19000 = 34200

0.8t^{2} + 6t - 15200 = 0

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

ax^{2} + bx + c, a\neq0.

This polynomial has roots x_{1}, x_{2} such that ax^{2} + bx + c = a(x - x_{1})*(x - x_{2}), given by the following formulas:

x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}

x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}

\bigtriangleup = b^{2} - 4ac

In this question:

0.8t^{2} + 6t - 15200 = 0

So a = 0.8, b = 6, c = -15200

Then

\bigtriangleup = 6^{2} - 4*0.8*(-15100) = 48356

t_{1} = \frac{-6 + \sqrt{48356}}{2*0.8} = 134.14

t_{2} = \frac{-6 - \sqrt{48356}}{2*0.8} = -141.64

We only take the positive value.

134 years after 2012.

.14 of an year is 0.14*365 = 51.1. The 51st day of a year happens in February.

So the population will reach 34,200 in February of 2146.

6 0
2 years ago
-2x-2+x^2+x+180+-2x-2=180
Dominik [7]

Answer:

x= 4, -1

Step-by-step explanation:

-2x - 2 + x^2 + x + 180 - 2x - 2 = 180

add like terms and put in descending order

x^2 - 3x + 176 = 180

subtract 180 from both sides

x^2 - 3x - 4 = 0

factor out the equation

(x-4)(x+1)=0

solve for x

x-4=0        x+1=0

x=4            x=-1

5 0
3 years ago
Please solve ASAP!!!!!!!!!
Ulleksa [173]

Answer:

14. A

15. C

16. B

17. B

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Brooke and Kaden each sold 15 boxes of cookies for $2.25 per box. How much
Sphinxa [80]

Answer:

They sold 67.50 in total

Step-by-step explanation:

If each of them sold 15 boxes for 2.25 then both of them got 33.75 each then you add it and that gives you 67.50

8 0
2 years ago
Other questions:
  • A long-distance telephone company claims that the mean duration of long-distance telephone calls originating in one town was gre
    10·1 answer
  • You have a friendship club. there are 12 members in your club. The 12th day of each month, you have a friendship call. Each memb
    12·1 answer
  • This expression, 1.8C + 32, shows how to convert from degrees Celsius to degrees Fahrenheit, where C represents the temperature
    14·2 answers
  • If rectangle is 8 feet long and (7+x) feet wide. what is the area of the rectangle in square feet?
    8·1 answer
  • A local poll found that only 17% of the 546 people surveyed feel the mayor's new city tax plan is effective. Find the mean of th
    7·1 answer
  • Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
    12·1 answer
  • Evaluate 2times 8+5-18divided by3
    8·1 answer
  • How do you write 2916 divided by 9 in the Associative Property
    7·1 answer
  • Does anyone know the answer?
    10·1 answer
  • A square has a side length of n + 6. A rectangle has length n + 15 and width of
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!