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
SIZIF [17.4K]
3 years ago
6

Please help with answers A and B :)

Mathematics
1 answer:
Over [174]3 years ago
5 0
A. Terms
b. 9
64 to 49 is -15, 49 to 36 is -13, 36 to 25 is -11, 25 to 16 is -9, so the next number is 16-7=9
You might be interested in
Using Newton's Law of Cooling. You are a medical examiner called to an abandoned house in which a dead body has been discovered.
Artyom0805 [142]
A) The differential equation comes from the fact that the rate of temperature change is proportional to the difference in temperatures.
\frac{dT}{dt} = \alpha(T -52)

B) Find general solution by separating variables and integrating\int\frac{dT}{T-52} = \alpha \int dt   \\  ln (T-52) = \alpha t + C  \\  T = C e^{\alpha t} +52:


C) Initial condition is t=0, T = 87
87 = C +52 \\  C = 35

D) Total time elapsed is 10 minutes, new temperature is 84
84 = 35 e^{10\alpha} +52
solve for alpha
e^{10\alpha} =\frac{32}{35}  \\  \alpha = \frac{ln(32/35)}{10} \\  \alpha = -.00896

E) Temperature function is:
T = 35 e^{-.00896 t} +52
solving for t
t = \frac{ln (\frac{T-52}{35})}{-.00896}
Plug in T = 98.6
t = -31.95

This is approximately 32 minutes before he arrived or about 1:20 AM
3 0
3 years ago
These two pygons are similar. Z=what
marta [7]

Answer:

I am not 100% about this, but I think that Z=46 Y=30 and X=45

Step-by-step explanation:

7 0
3 years ago
If f(x) = 7 + 4x and g(x)=1/2x, what is the value of (f/g)(5)?
Romashka [77]
<h2>Answer:</h2>

d. \ \boxed{270}

<h2>Step-by-step explanation:</h2>

In this exercise we need to make a division and evaluate the new function at x=5. so we have two functions, namely:

f(x)=7+4x \ and \\ \\ g(x)=\frac{1}{2x}  

Therefore:

f(5)=7+4(5)=27 \\ \\ g(5)=\frac{1}{2\times 5}=\frac{1}{10}

So:

(f/g)(5)=\frac{27}{\frac{1}{10}}=270

3 0
3 years ago
Read 2 more answers
Question 3 0.6 pts The following two right triangles are similar.If side CB = 33. side AB = 12, and side DE - 4. what is the len
Leno4ka [110]

Answer:

EF = 11

Step-by-step explanation:

AD/DE = 3

Therefore, DC/3 = EF

33/3 = 11

8 0
3 years ago
What is the following product?
jenyasd209 [6]

Answer:

10\sqrt{3}

Step-by-step explanation:

\sqrt{30} .\sqrt{10} \\= \sqrt{300} \\=\sqrt{100*3} \\= 10 \sqrt{3}

6 0
3 years ago
Other questions:
  • Please help me I don't get it
    8·1 answer
  • Find the slope of the line passing through the points (9,2) and (9,-5)
    11·1 answer
  • Hose 1 in June took 45 mins to fill a pool of height of 20 inches and length 110 inches. Hose 2 in July took 15 mins to fill the
    10·1 answer
  • What is four times a age decreased by 3 is equal to 3 times the age increased by 7. what is the age
    6·1 answer
  • Productive use of machinery on a farm made it possible to decrease the number of tractors by 12 how many tractors does the farm
    13·1 answer
  • What is the mean absolute deviation of the data set? {12, 17, 12, 8, 6} A: 3.2 B: 5.5
    7·2 answers
  • Conference A and conference B each have 10 football teams. The table shows the number of football games that each team in the tw
    15·2 answers
  • How do you do...<br> cos2x-sin2x=1-2sin2x
    6·1 answer
  • Find the new area 20ft and 10 ft. Perimeter 48cm2 p=?
    11·1 answer
  • For the function f(x)= 1/x+1. which of these could be a value f(x) when x is close to -1
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!