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
posledela
3 years ago
5

Can I get some help with number 2 please :/

Mathematics
2 answers:
alexandr1967 [171]3 years ago
5 0
Hello,


So the original temperature was 7 degrees Celsius.


Then, it went down 10 degrees.

 7-10= -3


So, in this case, the answer is C) -3 degrees celsius


Elina [12.6K]3 years ago
4 0
It is b just subtract 10 with 7
You might be interested in
The time between telephone calls to a cable television service call center follows an exponential distribution with a mean of 1.
Ulleksa [173]

Answer:

0.52763 is the probability that the time between the next two calls will be 54 seconds or​ less.

0.19285 is the probability that the time between the next two calls will be greater than 118.5 ​seconds.

Step-by-step explanation:

We are given the following information in the question:

The time between telephone calls to a cable television service call center follows an exponential distribution with a mean of 1.2 minutes.

The distribution function can be written as:

f(x) = \lambda e^{-\lambda x}\\\text{where lambda is the parameter}\\\\\text{Mean} = \mu = \displaystyle\frac{1}{\lambda}\\\\\Rightarrow 1.2 = \frac{1}{\lambda}\\\\\lambda = 0.84 \\f(x) = 0.84 e^{0.84 x}

The probability for exponential distribution is given as:

P( x \leq a) = 1 - e^{\frac{-a}{\mu}}\\\\P(a \leq x \leq b) = e^{\frac{-a}{\mu} -\frac{-b}{\mu}}

a) P( time between the next two calls will be 54 seconds or​ less)

P( x \leq 0.9)\\= 1 - e^{\frac{\frac{-54}{60}}{1.2}} = 0.52763

0.52763 is the probability that the time between the next two calls will be 54 seconds or​ less.

b) P(time between the next two calls will be greater than 118.5 ​seconds)

p( x > \frac{118.5}{60}) = P(x > 1.975)\\\\ = 1 - P(x \leq 1.975) \\\\= 1 -1+ e^{\frac{-1.975}{1.2}}\\\\= 0.19285

0.19285 is the probability that the time between the next two calls will be greater than 118.5 ​seconds.

6 0
3 years ago
Find the equation of line parallel line to y=2x+7 and that goes through the point 4,12
Step2247 [10]
Y= 2x+4, because when you plug in x and y you then solve for b and get 4. The 2x is the same because the slope stays the same on parallel lines.
8 0
3 years ago
X+y-z=5 -x-4y-8z=6 3x+5y-4z=-20
Juli2301 [7.4K]

Answer:

x = 24.48, y = -15.52, z = 3.95 to the nearest hundredth.

Step-by-step explanation:

 x+y-z=5             (a)

-x-4y-8z=6          (b)

3x+5y-4z=-20      (c)

Adding equations a and b:

-3y - 9z = 11       (d)

Now multiply equation b by 3:

-3x - 12y - 24z = 18        (e)

Adding  c and e:

-7y - 28z = -2      (f)  Multiply by 3 to give (g)

-3y - 9z = 11         (b)   Multiply by  -7 to give (h)

-21y - 84z = -6     (g)

21y + 63z = -77    (h)    Adding g and h:

-21z = - 83

z =  3.952

and y is found bt substituting in equation d:

-3y - 9(3.952) = 11

y = ( 11 + 9(3.952) / -3

= -15.52.

Now find x by substituting for y an z in equation a:

x - 15.52 - 3.952 = 5

x = 5 + 15.52 + 3.952

= 24.476.

3 0
3 years ago
A pack of pencils cost $8, but the price went<br> up to $12. What is the percent of increase?
sp2606 [1]

Answer:

A pack of pencil' price=$8

Price went up=$12

increasing percentage = change/original x100

= (12 -8)/8 x100

=4/8 x100

=50%

6 0
3 years ago
The square root of 27 lies between which two whole numbers
Agata [3.3K]

Answer:

5 and 6

Step-by-step explanation:

The square root of 27 is 5.19615242271  , which is more than 5 but less then 6, therefore is between 5 and 6.

<em />

<em />

<em />

<em />

<em />

<em />

<em>Hope this helped (: Can you please mark as brainliest?</em>

7 0
3 years ago
Other questions:
  • Just look at the pic and I'll give you points if you answer it Thanks bye
    14·1 answer
  • 3(x) + 1 = 10<br><br> what’s the answer to this?
    9·1 answer
  • Find the area.<br> 7.2 km<br> 4.4 km<br> 5.3 km<br> 2 km
    7·1 answer
  • You deposit $7000 into a bank account that has 6% interest compounded SEMIANNUALLY. Determine the amount of money in the bank af
    11·1 answer
  • The interior angles of a regular polygon each measure 165∘165∘. how many sides does the polygon have?
    9·1 answer
  • One interior angle of a triangle is 60⁰. The other angle measures are 25⁰ and x⁰. Which of the following could be the values of
    10·2 answers
  • A plane took off at a 15° angle to the ground and flew in Sydney’s direction. She is standing at a point 25 miles from the point
    5·2 answers
  • The arithmetic mean of 10 consecutive even integers is 3. What is the least of these 10 even integers?
    7·1 answer
  • What is the y-intercept of -x + 4 = y? *
    12·1 answer
  • Rachel is treating her three friends to go see The Avengers: End Game. Each movie ticket costs x dollars. Rachel orders each of
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!