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
Brilliant_brown [7]
1 year ago
10

Danni thinks of a number. She subtracts 2 then multiples the result by 8. The answer is the same as subtracting 5 from the numbe

r then multiplying by 16. What is the number did Danni think of?
Mathematics
1 answer:
Elena L [17]1 year ago
8 0

Answer:

8

Step-by-step explanation:

let the number=x

8(x-2)=16(x-5)

divide by 8

x-2=2(x-5)

x-2=2x-10

2x-x=-2+10

x=8

You might be interested in
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
Two numbers have a sum of 124
andrew-mc [135]

Answer:

78 and 46

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
A swimming pool, in the shape of a rectangular prism, is 50 meters long, 25 meters wide, and 3 meters deep. A liter is the same
Vera_Pavlovna [14]
To find liters from meters, multiply the meters by 1000. 1 meter equals 1000 liters. So, the answer would be 375000 from 3,750. 

P.S. IF you meant 750, then it's 750000
6 0
3 years ago
Read 2 more answers
X + 2 = 3<br> What’s the answer
kondor19780726 [428]

Answer: x=1

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Given the exponential equation, 3=18. Which of the equationsbelow will solve for x?
Zinaida [17]

Answer:

if you are evaluating this claim is false

7 0
3 years ago
Other questions:
  • Find the unit rate by using WKU. David drove 135 miles in 3 hours.
    14·1 answer
  • Need help now!!! 20 points!!!
    11·2 answers
  • Maggie jogged 7/8 mile on monday and half of that on tuesday. How far did she run on tuesday?
    11·1 answer
  • Plz help
    12·1 answer
  • A science teacher collects 19 pints of lake water for a lab she is teaching.The lab requires each student to use 4 fluid ounces
    13·1 answer
  • All help is much appreciated please and thank you
    10·1 answer
  • A salesperson earns $200 a week plus a 4% commission on her sales. Which equation models the relationship between her sales in a
    7·2 answers
  • Let Universal set U = {1, 2, 3, 4, 5, 6, 7, 8}, A' = {2,5, 6, 7}, A N B = {1,3,4}
    10·1 answer
  • Write 9.225 times 10 to the 18th power in standard form
    5·1 answer
  • How do you round 9372282 to the nearest 1000
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!