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
dedylja [7]
3 years ago
11

Help plzzz on this

Mathematics
1 answer:
Nady [450]3 years ago
7 0
90 degrees rotation about the origin
You might be interested in
A pentagon is formed by connecting the tips of a starfish's leds, as shown below
Igoryamba

Answer:

The area is 161

Step-by-step explanation:

brainliest?

7 0
2 years ago
MCR3U1 Culminating 2021.pdf
11111nata11111 [884]

Answer:

(a) y = 350,000 \times (1 + 0.07132)^t

(b) (i) The population after 8 hours is 607,325

(ii) The population after 24 hours is 1,828,643

(c) The rate of increase of the population as a percentage per hour is 7.132%

(d) The doubling time of the population is approximately, 10.06 hours

Step-by-step explanation:

(a) The initial population of the bacteria, y₁ = a = 350,000

The time the colony grows, t = 12 hours

The final population of bacteria in the colony, y₂ = 800,000

The exponential growth model, can be written as follows;

y = a \cdot (1 + r)^t

Plugging in the values, we get;

800,000 = 350,000 \times (1 + r)^{12}

Therefore;

(1 + r)¹² = 800,000/350,000 = 16/7

12·㏑(1 + r) = ㏑(16/7)

㏑(1 + r) = (㏑(16/7))/12

r = e^((㏑(16/7))/12) - 1 ≈ 0.07132

The  model is therefore;

y = 350,000 \times (1 + 0.07132)^t

(b) (i) The population after 8 hours is given as follows;

y = 350,000 × (1 + 0.07132)⁸ ≈ 607,325.82

By rounding down, we have;

The population after 8 hours, y = 607,325

(ii) The population after 24 hours is given as follows;

y = 350,000 × (1 + 0.07132)²⁴ ≈ 1,828,643.92571

By rounding down, we have;

The population after 24 hours, y = 1,828,643

(c) The rate of increase of the population as a percentage per hour =  r × 100

∴   The rate of increase of the population as a percentage = 0.07132 × 100 = 7.132%

(d) The doubling time of the population is the time it takes the population to double, which is given as follows;

Initial population = y

Final population = 2·y

The doubling time of the population is therefore;

2 \cdot y = y \times (1 + 0.07132)^t

Therefore, we have;

2·y/y =2 = (1 + 0.07132)^t

t = ln2/(ln(1 + 0.07132)) ≈ 10.06

The doubling time of the population is approximately, 10.06 hours.

8 0
2 years ago
(- 1/2 + 3/4 ) 1/5
marta [7]
I hope this helps you



(-2/4+3/4).1/5


1/4.1/5


1/20
4 0
2 years ago
The functions f(x) = (x + 1)2 − 2 and g(x) = -(x − 2)2 + 1 have been rewritten using the completing-the-square method. Is the ve
Ksenya-84 [330]

Answer:

The negative outside the parentheses indicates that the vertex is a maximum

f(x) has a minimum vertex

g(x) has a maximum

Step-by-step explanation:

7 0
3 years ago
Please help with both and leave a small explanation! I wanna double check my answers! Also I’ll mark brainliest :)
77julia77 [94]

Answer:

1. 10m

2. 18 ft

Step-by-step explanation:

These are just ratios. They are both essentially doubling

7 0
2 years ago
Read 2 more answers
Other questions:
  • (very urgent) will gave 20 pts
    11·1 answer
  • What is the probability of choosing a vegetable
    6·2 answers
  • Write the phrase as an algebraic expression. 6 less than a number times 11.
    12·2 answers
  • Counting back from 5 what number follows 4
    12·2 answers
  • Find the slope and the y-intercept for the line. y=2/5x
    13·1 answer
  • Solve 0.5y+y/3=0.25y+7​<br>please answer this question
    7·1 answer
  • PLEASE HELLLLLP ME!!!!!!<br> Write the inequality for five times b plus 3 is at most 10
    9·2 answers
  • X - y = 1 <br>Convert the equation from standard form to slope-intercept form.​
    13·2 answers
  • Find the value of 7C7
    10·1 answer
  • Please help 100 points please
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!