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tino4ka555 [31]

3 years ago

6

I don't understand help

2 answers:

Wewaii [24]3 years ago

8 0

They subtracted 1/3 from both sides instead of dividing 1/3 from both sides

pashok25 [27]3 years ago

4 0

Answer:

$x= 15$

Step-by-step explanation:

Francisca's mistake was that when she had an equation $5 = \frac{1}{3} x$ instead of dividing both sides by $\frac{1}{3}$ she substracted $\frac{1}{3}$ from both sides. So the correct way would be...

$5 = \frac{1}{3} x\\\\(5)(3) = (\frac{1}{3} x )(3)$

$15 = x$

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ivanzaharov [21]

Step-by-step explanation:

$T=2\pi\sqrt{\frac{l}{g}}$

$T+\Delta T=2\pi\sqrt{\frac{(l+\Delta l)}{g}} =2\pi\sqrt{\frac{l}{g}}\sqrt{1+\frac{\Delta l}{l}}=2\pi\sqrt{\frac{l}{g}}(1+\frac{1}{2}\frac{\Delta l}{l}+0(\frac{\Delta l}{l}))=T(1+\frac{1}{2}\frac{\Delta l}{l}+0(\frac{\Delta l}{l}))$

Here, the Taylor approximation for a square root was applied, and O(x) stands for all negligible terms of Taylor's sum with respect to variable x.

So, $\Delta T=T\frac{1}{2}\frac{\Delta l}{l}$

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7 0

3 years ago

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How many minutes is it from 8:00am to 11:40am?

ollegr [7]

Answer:

220 minutes

Step-by-step explanation:

Find how many hours there are between the two times which is 3 hours then multiply 3 by 60 because there are 60 minutes in an hour

Since the time is 11:40 we also know 40 minutes have passed so add the two minutes

40+180=220

5 0

3 years ago

Find the area of the shape shown below.

sveticcg [70]

Answer:

A = 15u²

Step-by-step explanation:

Area of a Trapezoid Formula:

$\frac{h}{2}*(b_1+b_2)$

Plug in our values (h = 3, b1 = 7, b2 = 3)

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2 years ago

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snow_lady [41]

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3 years ago

Find the H.C.F of x² - 3x ,x² - 9

krek1111 [17]

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7 0

3 years ago

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