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3 years ago

Rewriting 3 x 3 as a exponent

Mathematics

2 answers:

Alenkinab [10]3 years ago

3 0

Answer:

3²

Step-by-step explanation:

3×3=3² -> an exponent

il63 [147K]3 years ago

3 0

Three with a power 2 or you can just write three with a mini 2 on top

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Juan earns 20% commission as a salesperson. He sold a trampoline that cost $86.40 How

andreev551 [17]

Answer:

$17.28

Step-by-step explanation:

20% of $86.40

= $\frac{20}{100}$ × $86.40

= 0.2 × $86.40

= $17.28 ← commission

3 0

2 years ago

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 C parameterized by a vector function r(t) = x(t) i + y(t) j over an interval a ≤ t ≤ b 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

x(t) = exp(t ) + exp(-t ) ==> dx/dt = exp(t ) - exp(-t )

y(t) = 5 - 2t ==> dy/dt = -2

and [a, b] = [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

3 years ago

Central sub made 27 sandwiches useing 12 pounds of turkey how much turkey per sandwich?

zhannawk [14.2K]

12 pounds divided up between 27 sandwiches is 0.44 pounds for each sandwich. 12/27=0.44

7 0

3 years ago

it is 12 degrees colder in the mountains than in the valley. The temperature on the mountain is x. The temperature in the valley

Grace [21]

X= y+12

OR

Valley(y)= mountain(x)-12

6 0

3 years ago

84is30% of what number

Keith_Richards [23]

Answer:

280

Step-by-step explanation:

30/100 = 84/x

84 x 100 = 8400

8400/30 = 280

6 0

3 years ago