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
vlada-n [284]
3 years ago
7

Can someone help me with number two please?

Mathematics
2 answers:
ELEN [110]3 years ago
4 0
So far Andrea and her partner have completed 75% of the 12-page essay, that means they still have to complete 25%.

What you have to do is find 25% of 12

The first thing you should do is turn 25% into a decimal and then multiply it by 12 and the final answer should equal the number of pages that Andrea and her partner have left to write.

So, 0.25*12=3       Therefore they have 3 pages left to write.

iren [92.7K]3 years ago
4 0
So if they wrote 25% of the 12 total pages in class that would leave 9 pages left to do.
25% of 12 = 9

Then if they wrote 50% of the remaining 9 pages that would give you 4.5
50% of 9 = 4.5

So then we would add up the two totals to get 7.5
4.5 + 3 = 7.5

Lastly, we would subtract 7.5 from 12 to get our remaining number of pages left to be written
12-7.5=4.5
You might be interested in
What is the product of <br><br> 2x+3 and 4x^2-5x+6 .
stira [4]

Answer:

Explanation:

We have:

(

2

x

+

3

)

(

4

x

2

−

5

x

+

6

)

Now let's distribute this piece by piece:

(

2

x

)

(

4

x

2

)

=

8

x

3

(

2

x

)

(

−

5

x

)

=

−

10

x

2

(

2

x

)

(

6

)

=

12

x

(

3

)

(

4

x

2

)

=

12

x

2

(

3

)

(

−

5

x

)

=

−

15

x

(

3

)

(

6

)

=

18

And now we add them all up (I'm going to group terms in the adding):

8

x

3

−

10

x

2

+

12

x

2

+

12

x

−

15

x

+

18

And now simplify:

8

x

3

+

2

x

2

−

3

x

+

18Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
The first term of a geometric sequence is −8100 . The common ratio of the sequence is −0.1 .
pychu [463]

Answer:

-8100 x (-0.1)5

Step-by-step explanation:

8 0
3 years ago
Find the vertex of the following quadratic function and graph.<br>y=(2x+3)(x-3) ​
photoshop1234 [79]

Answer:

Its probably a vortex since its a quadratic funtion

8 0
3 years ago
Find the value of x in the triangle shown below.
DIA [1.3K]

Answer:

x=8

Step-by-step explanation:

We can use the Pythagorean theorem to solve

a^2+b^2 = c^2  where a and b are the legs and c is the hypotenuse

6^2 + x^2 = 10^2

36 + x^2 = 100

Subtract 36 from each side

36-36 +x^2 = 100-36

x^2 = 64

Take the square root of each side

sqrt(x^2) = sqrt(64)

x = 8

7 0
3 years ago
Read 2 more answers
Newton's law of cooling is:
Mnenie [13.5K]

Answer:

t = \frac{ln(\frac{21}{59})}{-0.15}=6.887 hr

So it would takes approximately 6.9 hours to reach 32 F.

Step-by-step explanation:

For this case we have the following differential equationÑ

\frac{du}{dt}= -k (u-T)

We can reorder the expression like this:

\frac{du}{u-T} = -k dt

We can use the substitution w = u-T and dw =du so then we have:

\frac{dw}{w} =-k dt

IF we integrate both sides we got:

ln |w| = -kt +C

If we apply exponential in both sides we got:

w = e^{-kt} *e^c

And if we replace w = u-T we got:

u(t)= T + C_1 e^{-kt}

We can also express the solution in the following terms:

u(t) = (T_i -T_{amb}) e^{kt} +T_{amb}

For this case we know that k =-0.15 hr since w ehave a cooloing, T_{i}= 70 F, T_{amb}=11F, we have this model:

u(t) = (70-11) e^{-0.15t} +11

And if we want that the temperature would be 32F we can solve for t like this:

32 = 59 e^{-0.15 t} +11

21=59 e^{-0.15 t}

\frac{21}{59} = e^{-0.15 t}

If we apply natural logs on both sides we got:

ln (\frac{21}{59}) =-0.15 t

t = \frac{ln(\frac{21}{59})}{-0.15}=6.887 hr

So it would takes approximately 6.9 hours to reach 32 F.

7 0
4 years ago
Other questions:
  • Calculate the area of triangle ABC with altitude CD, given A(6,-2) B(1,3) C(5,5) D(2,2)
    8·1 answer
  • Wilma used 60 centimeters of lace to make a border around a rectangular card. The width of the card is 20 centimeters. What is t
    8·1 answer
  • A square quilt is made by sewing smaller square sections together. The same number of smaller squares are in each row. Beth’s sq
    7·2 answers
  • Jayla buys and sells vintage clothing. She bought two blouses for $25.00 each and later sold them for $38.00 each. She bought th
    7·1 answer
  • A commercial building contractor is trying to decide which of two projects to commit her company to. Project A will yield a prof
    7·1 answer
  • What is the solution to the following system?
    8·1 answer
  • (-2)^5 !!!!!!!!!! help
    9·2 answers
  • The drying times for a certain type of cement are normally distributed with a standard deviation of 30 minutes. A researcher wis
    9·1 answer
  • Someone know this question??
    9·1 answer
  • How much of a radioactive kind of xenon will be left after 15 days if the half-life is 5 days and
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!