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
murzikaleks [220]
3 years ago
14

Please help will give BRAINLIEST

Mathematics
1 answer:
Nastasia [14]3 years ago
7 0

Answer:

I think it is C. 14

Step-by-step explanation:

r+3+4r-28=45

5r-25=45

5r=70

r=14

You might be interested in
Ryan wants to rent a limo for a trip to the city. The limo costs $700 for the night and $2.50 per mile. What is the greatest dis
Pavel [41]

Answer:

20 miles

Step-by-step explanation:

the answer is 20 miles

5 0
3 years ago
Read 2 more answers
Find the exact length of the curve. x=et+e−t, y=5−2t, 0≤t≤2 For a curve given by parametric equations x=f(t) and y=g(t), arc len
Rama09 [41]

The length of a curve <em>C</em> parameterized by a vector function <em>r</em><em>(t)</em> = <em>x(t)</em> i + <em>y(t)</em> j over an interval <em>a</em> ≤ <em>t</em> ≤ <em>b</em> is

\displaystyle\int_C\mathrm ds = \int_a^b \sqrt{\left(\frac{\mathrm dx}{\mathrm dt}\right)^2+\left(\frac{\mathrm dy}{\mathrm dt}\right)^2} \,\mathrm dt

In this case, we have

<em>x(t)</em> = exp(<em>t</em> ) + exp(-<em>t</em> )   ==>   d<em>x</em>/d<em>t</em> = exp(<em>t</em> ) - exp(-<em>t</em> )

<em>y(t)</em> = 5 - 2<em>t</em>   ==>   d<em>y</em>/d<em>t</em> = -2

and [<em>a</em>, <em>b</em>] = [0, 2]. The length of the curve is then

\displaystyle\int_0^2 \sqrt{\left(e^t-e^{-t}\right)^2+(-2)^2} \,\mathrm dt = \int_0^2 \sqrt{e^{2t}-2+e^{-2t}+4}\,\mathrm dt

=\displaystyle\int_0^2 \sqrt{e^{2t}+2+e^{-2t}} \,\mathrm dt

=\displaystyle\int_0^2\sqrt{\left(e^t+e^{-t}\right)^2} \,\mathrm dt

=\displaystyle\int_0^2\left(e^t+e^{-t}\right)\,\mathrm dt

=\left(e^t-e^{-t}\right)\bigg|_0^2 = \left(e^2-e^{-2}\right)-\left(e^0-e^{-0}\right) = \boxed{e^2-\frac1{e^2}}

5 0
2 years ago
I have no idea what to do with this someone help
joja [24]
The given distance of 5.20 would be A.

Replace A with 5.20 to solve for T.

T = 5.20^3/2
T = 11.9 years.
4 0
3 years ago
Read 2 more answers
Find the area of the sector in terms of pi. 170 6 Area = [?] T
Harlamova29_29 [7]

Answer:

see the attachment photo!

8 0
2 years ago
Find the deference between
maxonik [38]

Answer:

$5520

Step-by-step explanation:

Given data

Principal=  $24000

Rate=10%

time= 2 years

Firstly, the compound interest is given as

A=P(1+r)^t

A=24000(1+0.1)^2

A=24000(1.1)^2

A=24000*1.21

A=$29040

The simple interest is given as

A=P(1+rt)

A=24000(1+0.1*2)

A=24000(1.2)^2

A=24000*1.44

A=$34560

Hence the difference is

=34560-29040

=$5520

8 0
3 years ago
Other questions:
  • How do you solve 5 + 1 7/8
    5·2 answers
  • Greta added 3/6 of a cup of sugar to her cake mix, then sprinkled
    5·1 answer
  • 5.According to the Bureau of Labor Statistics, in calendar year 2000, the average duration of unemployment was 12.7 weeks, with
    13·1 answer
  • Use cross products to solve the proportion:<br><br> 5/m = 15/9
    15·2 answers
  • Which of the following conjectures is false?<br>Please give a counterexample!<br>Thank youuu
    14·1 answer
  • A company has 24 employees. Each employee volunteers to bring 1 item to the local school
    14·2 answers
  • In triangle def the measure of angle F=90 degrees fe=21 df=20cand ed=29 what is the cosine of angle e to nearest hundredth
    8·1 answer
  • Answer please brainliested
    13·2 answers
  • Given f(x) = 3x – 1, solve for x when f(x) = -7.
    13·2 answers
  • According to the table, what was the hiker’s total displacement?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!