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2 years ago

Help me 20 points!!! 7th-grade math.

Mathematics

1 answer:

fiasKO [112]2 years ago

5 0

Answer:

the answer is 0.7+1.8h

Step-by-step explanation:

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Find the inverse: f(x)=x+5/3x-1<br><br> f^-1x=

babunello [35]

We have $f(x)=\dfrac{x+5}{3x-1}$ .

To find inverse function $f^{-1}(x)$ we substitute x with $f^{-1}(x)$ and vice-versa to get

$x=\dfrac{f^{-1}(x)+5}{3f^{-1}(x)-1}$

Now solve for $f^{-1}(x)$ . Note that I will use $j$ instead.

$x=\dfrac{j+5}{3j-1} \\x(3j-1)=j+5 \\3jx-x=j+5 \\3jx-x-j-5=0 \\3jx-j=x+5 \\j(3x-1)=x+5 \\j=\dfrac{x+5}{3x-1}$

So we find that $f(x)=f^{-1}$ .

Hope this helps.

7 0

2 years ago

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Convert: 6 cubic centimeters to fluid Ounces.<br> O 0.203<br> O 0.000203<br> 02.03<br> 0.00203

ladessa [460]

I think the correct answer is A because 6 cubic centimeters to fluid ounces equals 0.202884, but if you round it you get 0.203

Mark Brainliest if correct

6 0

2 years ago

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Unit test

lesya692 [45]

Isn’t that considered cheating since it’s a test??

7 0

2 years ago

Factor the polynomial

arlik [135]

Answer:

(5x+12) (5x-12)

Step-by-step explanation:

Use the difference of squares fromula. $a^{2} -b^{2} =(a+b)(a-b)$

Where a = 5x and b =12.

4 0

2 years ago

AACB ~AEFD<br> x = [?]<br> Enter your answer in decimal form.

tia_tia [17]

Answer:

Solution,

∆ ACB = ∆ EFD

finding the value of X,

$\frac{x}{3.8} = \frac{15}{5}$

Apply cross product property

$x \times 5 = 15 \times 3.8$

Calculate the product

$5x = 57$

Divide both sides by 5

$\frac{5x}{5} = \frac{57}{5}$

Calculate

$x = 11.4$

Hope this helps...

Good luck on your assignment...

4 0

2 years ago