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3 years ago

PLEASE HELP IT'S URGENT! I WILL AWARD BRAINIEST

Mathematics

2 answers:

ioda3 years ago

7 0

Answer: Fourth graph

Step-by-step explanation:

Given: The function below shows the number of hours f(x) Cindy took to make an apple pie after she had made it x times:

$f(x)=3(0.4)^x$

As we can see , all the given graph are intersecting y axis and at y axis , the value of x=0.

So to find the intersecting point of y axis and the given function, put x=0 in the given function, we have

$f(0)=3(0.4)^0=3(1)=3$

So the intersecting point = (0,3)

We can see from options that only in the last graph the curve is intersecting y axis at 3.

Hence, the fourth graph represents the function.

yaroslaw [1]3 years ago

3 0

Note the time is getting smaller, which rules out 1 and 3. plug 1 in for x to get f(1)=1.2. on the 2nd graph, f at 1 has a value of. 4. however graph 4 has a value of f at 1 of 1.2. last graph is the answer

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2 years ago

Big Bob’s Pizza is having a special on pizza and is offering two different choices:

Anna71 [15]

Answer:

The Choice N#1 will give more pizza for your money

Step-by-step explanation:

step 1

Find the area of one slice Choice #1

The area of the circle is equal to

$A=\pi r^{2}$

we have

$r=22/2=11\ in$ ----> the radius is half the diameter

assume

$\pi =3.14$

The area of one slice is equal to

$A=(1/8)\pi r^{2}$

substitute

$A=(1/8)(3.14)(11)^{2}$

$A=47.4925\ in^{2}$

Divide the cost by the area

$4.95/47.4925=0.10\frac{\$}{in^{2}}$

step 2

Find the area of the entire personal pizza Choice # 2

The area of the circle is equal to

$A=\pi r^{2}$

we have

$r=6/2=3\ in$ ----> the radius is half the diameter

assume

$\pi =3.14$

substitute

$A=(3.14)(3)^{2}$

$A=28.26\ in^{2}$

Divide the cost by the area

$3.75/28.26=0.13\frac{\$}{in^{2}}$

therefore

The Choice N#1 will give more pizza for your money

5 0

3 years ago

Percy solved the equation x2 7x 12 = 12. his work is shown below. is percy correct? explain. 1. (x 3)(x 4) = 12 2. x 3 = 12 or x

stepladder [879]

Percy solved the equation by expanding the expression on the left-hand side, and this is incorrect

<h3>How to determine the true solution?</h3>

The equation is given as:

x^2 + 7x + 12 = 12

The first step in solving the equation is to equate the equation to 0.

i.e.

x^2 + 7x + 12 - 12 = 0

This given

x^2 + 7x = 0

From the question, Percy solved the equation by expanding the expression on the left-hand side

Hence, Percy's solution is incorrect