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wolverine [178]

3 years ago

9

What is the inverse of the function? f(x)=3x f(x)=-3x f(x)=x^3 f(x)=x/3 ***** This function does not have an inverse I think it'

s C but I'm not sure.

1 answer:

goldenfox [79]3 years ago

3 0

I hope this helps you

y=3x

x=y/3

f^-1 (x)= x/3

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McDonalds sells quarter-pound cheeseburgers for .99 cents last saturday.they sold 310 of these cheeseburgers. how many pounds of

Anvisha [2.4K]

The first thing you should do is calculate how many pounds of cheese a hamburger has
1 hamburger = 1/4 pound of cheese.
Then, you can make a rule of three to know how many pounds of cheese were sold:
1 ---> 1/4
310 ---> x
Clearing x we have:
x = ((310) / (1)) * (1/4) = 77.5
Answer
they sell last saturday 77.5 pounds of cheese

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3 years ago

4x+5=3x+6<br> Help please

ohaa [14]

Answer:

x=1

just use google mate

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3 years ago

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The mass of Earth is 5.97 X 10²⁴ kilograms. The mass of the Moon is 7.34 x 10²² kilograms. What is the combined mass of earth.

Damm [24]

Answer:

13.31 x $10^{46}$

Step-by-step explanation:

So, if we take the two equations, and add the normal numbers together, we have: 5.97 + 7.34 = 13.31

Then if we add the two tens together it would be: $10^2^2$ + $10^{24$ = 10 to the power of 46.

The equation would be 13.31 x $10^{46}$

I'm not an expert, so sorry if this is wrong.

6 0

3 years ago

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One factor of the function f(x) = x3 − 8x2 + 17x − 10 is (x − 5). Describe how to find the x-intercepts and the y-intercept of t

kozerog [31]

Answer:

x-intercepts: (1,0), (2,0), (5,0)

y-intercepts: (0,-10)

Step-by-step explanation:

One factor of the function $f(x) = x^3-8x^2 + 17x-10$ is $(x-5).$

Factor the polynomial in the following way:

$x^3-8x^2 + 17x-10\\ \\=x^3-5x^2-3x^2+15x+2x-10\\ \\=x^2(x-5)-3x(x-5)+2(x-5)\\ \\=(x-5)(x^2-3x+2)$

Now factor the quadratic in brackets:

$x^2-3x+2\\ \\=x^2-2x-x+2\\ \\=x(x-2)-(x-2)\\ \\=(x-2)(x-1)$

Hence,

$f(x)=(x-5)(x-2)(x-1)$

The x-intercepts are points at which y = 0, so

$(x-5)(x-2)(x-1)=0\\ \\x-5=0\ \text{or}\ x-2=0\ \text{or}\ x-1=0\\ \\x=5\ \text{or}\ x=2\ \text{or}\ x=1$

The y-intercepts are points at which x = 0, so

$y=0^3-8\cdot 0^2+17\cdot 0-10=-10$

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3 years ago

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I have 4 different single digit numbers . Only one of my numbers is even. The largest number is one more than the number of inch

dlinn [17]

So we already know that one of the numbers, the largest, is 7. Now we just need to find the other 3. The other 3 numbers add up to 10. So, we can divide 10 by 2 to get 5. What odd and even numbers equal five? 2 and 3.

Your numbers are 2, 3, 5, and 7.

5 0

3 years ago