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LenaWriter [7]
4 years ago
12

If f(x)=4x+7, what is the inverse of fx

Mathematics
1 answer:
irinina [24]4 years ago
5 0

Answer:

f^-1(x) = 1/4 x - 7/4

Step-by-step explanation:

f(x)=4x+7

Inverse:

x = 4y + 7

4y = x - 7

  y = 1/4 x - 7/4

Answer

f^-1(x) = 1/4 x - 7/4

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Benny wants to make cookies.To make cookies, he needs 7/3 cups of flour per batch of cookies.If Benny has 7 cups of flour, then
Amanda [17]

Answer:

With 7 cups of flour  3.13 batches of cookies can be made.

Step-by-step explanation:

The amount of flour needed per batch of cookies = 7/3 cups

=  2.33 cup

⇒ 1 batch of cookies = 2.33 cup of flour

or  the ratio of <u>cookie to flour =         1       :      2.33</u>

<u />

Now, the amount of flour Benny has = 7 cups

Let the total batches of cookie made = m

or, ratio of <u>cookie to flour =         m       :      7</u>

So, by the RATIO OF PROPORTIONALITY:

\frac{1}{2.23}  = \frac{m}{7 }

⇒ m = 7 /2.23

or, m   =  3.13

or,  total batches of cookie made = 3.13

Hence, from 7 cups of flour  3.13 batches of cookies can be made.

8 0
4 years ago
If p(x)=x^2+x+1 and q(x)=3x^2-1, find p(7)
Delvig [45]

Answer:

p(7) = 57

Step-by-step explanation:

Because this is a function, all you have to do is input 7 for x like so:

p(x)=x^2+x+1 --------------->     p(7)=7^2+7+1

                                            so 49 + 8

                                                = 57

7 0
2 years ago
Find sin(a) <br> (Picture)
svet-max [94.6K]

Answer:

Sine of A should be 5/13

Step-by-step explanation:

Hope this Helped

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Masteriza [31]

Step-by-step explanation:

Simplifying

3(3w + -5) = 12

Reorder the terms:

3(-5 + 3w) = 12

(-5 * 3 + 3w * 3) = 12

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Solving

-15 + 9w = 12

Solving for variable 'w'.

Move all terms containing w to the left, all other terms to the right.

Add '15' to each side of the equation.

-15 + 15 + 9w = 12 + 15

Combine like terms: -15 + 15 = 0

0 + 9w = 12 + 15

9w = 12 + 15

Combine like terms: 12 + 15 = 27

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Simplifying

w = 3

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Step-by-step explanation:

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