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3 years ago

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Mika used these steps to solve the equation 5x−12=−2+5(x−2). Which choice describes the meaning of her result, −12=−12?

2 answers:

inna [77]3 years ago

5 0

Answer:

All values of x make the equation true

Step-by-step explanation:

Hope this helps!

Debora [2.8K]3 years ago

4 0

All values of x make the equation true

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Can anyone please help

shusha [124]

$\text{Hi there! :)}$

$\large\boxed{f'(2) = -\frac{16}{27} }$

$f'(x) = \frac{(5 + x^{2} )(-2x) - (7 - x^{2} )(2x)}{(5+x^{2})^{2} } \\\\f'(x) = \frac{-10x-2x^{3}- 14x + 2x^{3} }{(5+x^{2})^{2} } \\\\f'(x) = \frac{-24x}{(5+x^{2})^{2} }\\\\ \text{Solve for the derivative at f'(2) using substitution:}\\\\f'(2) = \frac{-24(2)}{(5+2^{2})^{2} } \\\\f'(2) = \frac{-48}{81} \\\\\text{Simplify:}\\\\f'(2) = -\frac{16}{27}$

8 0

3 years ago

Read 2 more answers

Find the surface area of each figure. Round to the nearest 10th

AnnZ [28]

Answer:

The surface area of the figure is 352 cm².

Step-by-step explanation:

Given:

Length(l) = 12 cm.

Width(w) = 4 cm.

Height(h) = 8 cm.

Now, to find the surface area.

By putting the formula to get the surface area:

Surface area = 2(l×w+w×h+h×l)

$Surface\ area =2(12\times 4+4\times 8+8\times 12)$

$Surface\ area =2(48+32+96)$

$Surface\ area =2\times 176$

$Surface\ area =352 cm^2.$

Therefore, the surface area of the figure is 352 cm².

4 0

2 years ago

Find an explicit formula for f(n).

soldi70 [24.7K]

Answer:

f(n) = 2n - 2

Step-by-step explanation:

Given the recursive formula

f(n) = f(n - 1) + 2 with f(1) = 0, then

f(2) = f(1) + 2 = 0 + 2 = 2

f(3) = f(2) + 2 = 2 + 2 = 4

f(4) = f(3) + 2 = 4 + 2 = 6

The terms of the sequence are 0, 2, 4, 6, ....

These are the first 4 terms of an arithmetic sequence with explicit formula

f(n) = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here d = 2 - 0 = 4 - 2 = 6 - 4 = 2 and a₁ = 0, thus

f(n) = 0 + 2(n - 1), that is

f(n) = 2n - 2 ← explicit formula

5 0

3 years ago

Say if you drive 240 miles at a unit rate of 60 miles per hour, how many hours would it take to drive 240 miles? explain what yo

vichka [17]

4 hours. You divide 240 by 60 because you travel 240 total miles and you 60 mph and you will get 4 and it will be 4 hours

3 0

2 years ago

I need some help pls

USPshnik [31]

Answer:

C would be your answer

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers