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3 years ago

Rewrite the following subtraction problem as an addition problem.

Mathematics

1 answer:

blsea [12.9K]3 years ago

5 0

Answer:

x+129=592

Step-by-step explanation:

add 129 to each side

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9/16+5/12= help asap

navik [9.2K]

$\frac{9}{16} + \frac{5}{12} = \frac{27}{48} + \frac{20}{48} = \frac{47}{48}$

8 0

3 years ago

Read 2 more answers

What is the value of t in this equation?<br> 3t=t+3

Lera25 [3.4K]

$3t=t+3\\
2t=3\\
t=\dfrac{3}{2}$

8 0

4 years ago

The rate of change of revenue (in dollars per calculator) from the sale of x calculators is R′(x)=(x+1)ln(x+1)R ′ (x)=(x+1)ln(x+

jekas [21]

Answer:

Total revenue = $\frac{169}{2}\ln(13)-\frac{169}{4}$ dollars

Step-by-step explanation:

$R'(x)=(x+1)\ln(x+1)$

Integrate with respect to $x$ .

$R(x)=$ ∫ $(x+1)\ln(x+1)$ dx

Take $x+1=u$

Differentiate with respect to $x$

$dx=du$

So,

$R(x)=$ ∫ $u\ln(u)\,du$

Use integration by parts: ∫f g dx = f∫ g dx-∫(∫g dx)f' dx

Therefore,

$R(x)=$ $\frac{u^2}{2}\ln(u)$ $-$ ∫ $\frac{u^2}{2}\frac{1}{u}\,du$

= $\frac{u^2}{2}\ln(u)$ $-$ ∫ $\frac{u}{2}\,du$

Put $u=x+1$

$R(x)= \frac{(x+1)^2}{2}\ln(x+1)-\frac{(x+1)^2}{4}$

To find total revenue from the sale of the first 12 calculators, put $x=12$

$R(x)= \frac{(12+1)^2}{2}\ln(12+1)-\frac{(12+1)^2}{4}\\\\= \frac{(13)^2}{2}\ln(13)-\frac{(13)^2}{4}\\\\=\frac{169}{2}\ln(13)-\frac{169}{4}$

Total revenue = $\frac{169}{2}\ln(13)-\frac{169}{4}$ dollars

4 0

3 years ago

Can someone help me??

alexgriva [62]

Answer:ghdjdjhdjfjfjfjjxjdiwantpointiand I won't help youudjjd cuz I'm actually bad at mstj

Step-by-step explanation:

4 0

3 years ago

The age of a father is three times that of his son. In ten year's time their ages will add up to 68 years. If the son is x years

Elodia [21]

Answer:

46 and 22

Step-by-step explanation:

let the father b (f) and d son is (s)

f=3s.....(1)

(f+10) +(s+10)=68 .... (2)

substitute f=3s in equation (2)

we have

(3s+10)+(s+10)=68

4s+20=68

4s=68-20

4s=48

s=12 .......(3)

substitute (3) in (1)

f=3*12

which f=36

in 10 year time

f+10 =46

s+10=22

3 0

2 years ago