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
Soloha48 [4]
3 years ago
5

Please help me with this ,

Mathematics
1 answer:
blagie [28]3 years ago
3 0

Answer:

  (a) -2.3°/min

  (b) -2.9°/min

Step-by-step explanation:

The average rate of change is the ratio of the difference in R values to the difference in the corresponding t values.

(a) m = (157.6 -226.6)/(30 -0) = -69/30 = -2.3 . . . degrees per minute

__

(b) m = (61.6 -119.6)/(70 -50) = -58/20 = -2.9 . . . degrees per minute

You might be interested in
Three fair dice are rolled, one red, one green and one blue. What is the probability that the upturned faces of the three dice a
r-ruslan [8.4K]

Answer:   \dfrac{5}{9}

Step-by-step explanation:

When we throw a die , Total outcomes =6

When we throw 3 dice , Total outcomes = 6 x 6 x 6 = 216 [by fundamental counting principle]

Given : Three fair dice are rolled, one red, one green and one blue.

Favorable outcomes : When the upturned faces of the three dice are all of different numbers i.e. no repetition of numbers allowed

By Permutations , the number of favorable outcomes = ^6P_3=\dfrac{6!}{(6-3)!}=\dfrac{6!}{3!}=6\times5\times4=120

The probability that the upturned faces of the three dice are all of different numbers = \dfrac{\text{Favorable outcomes}}{\text{Total outcomes}}

=\dfrac{120}{216}=\dfrac{5}{9}

The probability that the upturned faces of the three dice are all of different numbers  is \dfrac{5}{9} .

7 0
3 years ago
L.F. Richardson proposed a model to describe the spread of war fever. His proposal: If y(t) is the percent of the population adv
Lena [83]

Answer:

y'(t)=ky(t)(100-y(t))

Step-by-step explanation:

The rate of change of y(t) at any time is the derivative of y with respect to time y, y'(t)

If y(t) is the percent of the population advocating war at time t

then 100-y(t)  is the percent of the population not advocating war

The product of the percentage of the population advocating war and the percentage not advocating war would be

y(t)(100-y(t))

If the rate of change of y(t) at any time is proportional to the product of the percentage of the population advocating war and the percentage not advocating war, then

y'(t)=ky(t)(100-y(t))

where <em>k is the constant of proportionality </em>

8 0
3 years ago
Hello please help me answer :) <br><br> ( WILL GIVE BRAINLST)
Vanyuwa [196]

Answer:

Answer is given

:) mark me brainliest

4 0
3 years ago
A florist received 30 dozen roses. She order 20 dozen. What percent did she receive in excess
KonstantinChe [14]
Extra 10, 10 is half of what she ordered so she received an extra 50%
8 0
3 years ago
Read 2 more answers
I need help with this I got -10 is it right??
Dahasolnce [82]

Answer:

-14

Step-by-step explanation:

difference between -20 and -5 = 15

15 x 2/5 = 30/5 = 6

-20 + 6 = -14

7 0
3 years ago
Other questions:
  • If you have a credit card debt of $2000 and the simple interest for one month is $40, what is the interest rate you are paying?
    9·1 answer
  • What is the slope of a line? With the equation d=420-65t
    7·1 answer
  • For each of the questions, find the value of x. If necessary, round your answer to the nearest tenth. The figure is not drawn to
    11·1 answer
  • Identifying Rays and Segments
    6·2 answers
  • What digit is in the tenths place in 24.816
    10·2 answers
  • Reflect the point (-7, -9) across the x-axis: Then
    10·1 answer
  • Move the numbers to the lines to order them from least to greatest.
    14·1 answer
  • HELP PLS HURRY! The graph shows the proportional
    8·2 answers
  • Select all line segment measurements below that could NOT be used to form a triangle. a triangle with the side measurements of 3
    7·2 answers
  • 1-tan^2(x)/sec^2 = cos(2x)
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!