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
Step2247 [10]
2 years ago
13

The number of cases of a new disease can be modeled by the quadratic regression equation y = -2x^2 + 40x + 8. What is the best p

rediction for the number of cases in year 15
Mathematics
1 answer:
Stels [109]2 years ago
5 0

Answer:

158 cases

Step-by-step explanation:

Given tbe quadratic regression model :

y = -2x^2 + 40x + 8

y = number of cases of a new disease

x = number of years

The predicted number of cases of a new disease in 15 years can be calculated thus ;

Put x = 15 in the equation ;

y = -2(15)^2 + 40(15) + 8

y = - 2 * 225 + 600 + 8

y = - 450 + 600 + 8

y = 158

158 cases

You might be interested in
What would be the answer to this problem <img src="https://tex.z-dn.net/?f=%5Cfrac%7B7x-3%7D%7B9%7D%20%5Cgeq%208-2x" id="TexForm
Alenkasestr [34]

Answer:

x\geq 3

Step-by-step explanation:

6 0
2 years ago
Need to pass this semester so please help
Aleks04 [339]
The correct answer is X= 14°
7 0
3 years ago
Please help logarithms!
nlexa [21]

Given:

\log_34\approx 1.262

\log_37\approx 1.771

To find:

The value of \log_3\left(\dfrac{4}{49}\right).

Solution:

We have,

\log_34\approx 1.262

\log_37\approx 1.771

Using properties of log, we get

\log_3\left(\dfrac{4}{49}\right)=\log_34-\log_349      \left[\because \log_a\dfrac{m}{n}=\log_am-\log_an\right]

\log_3\left(\dfrac{4}{49}\right)=\log_34-\log_37^2      

\log_3\left(\dfrac{4}{49}\right)=\log_34-2\log_37          [\log x^n=n\log x]

Substitute \log_34\approx 1.262 and \log_37\approx 1.771.

\log_3\left(\dfrac{4}{49}\right)=1.262-2(1.771)

\log_3\left(\dfrac{4}{49}\right)=1.262-3.542

\log_3\left(\dfrac{4}{49}\right)=-2.28

Therefore, the value of \log_3\left(\dfrac{4}{49}\right) is -2.28.

5 0
2 years ago
An elevator is on the twentieth floor. It goes down 11 floors and then up 5 floors. What floor is the elevator on now?
kolbaska11 [484]

Answer:

floor 14

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
OH GOD PLEASE HELP ME MY BRAIN HURTS!
alukav5142 [94]
Your answer should be 71. :)
8 0
2 years ago
Other questions:
  • Identify the postulates that prove the triangles are congruent.
    15·1 answer
  • McKenzie runs 1.5 mi every 10 min.
    11·1 answer
  • A school earns $70 from selling 50 raffle tickets. Each ticket costs the same price. How much does the school earn for 1 ticket?
    6·2 answers
  • Is 20 g bigger than 0.02 kg???
    14·2 answers
  • A carton can hold 1,000 unit cubes that measure 1 inch by 1 inch by 1 inch. Describe the demensions of the carton using unit cub
    7·1 answer
  • 10q + 8 - 9q + 12 = 35. <br><br> q = ?
    14·2 answers
  • Please help with these one variable linear inequalities
    15·1 answer
  • Mrs. Soto invested in a certificate of deposit that pays 8% interest. Her investment was $325. How much interest will she receiv
    12·2 answers
  • if a ball is rolling down hill and accelerating at a rate of 2m/s^2 because of a 2N net force. What is the mass of the ball?
    5·1 answer
  • (Please. I wouldn't be asking if i didn't need help. I have been stuck for 6 hours straight.)
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!