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irina1246 [14]
3 years ago
9

Kelly made a blueberry pie. After measuring the pie tin, Kelly calculated it has an area of 78.5 square inches. What is the pie

tin's diameter? (Using 3.14 as pi)
Mathematics
1 answer:
Lostsunrise [7]3 years ago
6 0

Answer:

The radius is 5 in

Step-by-step explanation:

The area of a circle is given by the formula

A = pi *r^2

We know the area  = 78.5 in^2   (volume would be in^3   area is in^2)

78.5 = 3.14*r^2

Divide each side by 3.14

78.5/3.14 = 3.14/3.14*r^2

25 = r^2

Take the square root of each side

sqrt(25) sqrt(r^2)

5 =r

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In 2010, there were about 246 million vehicles (cars and trucks) and about 308.7 million people in the United States.1 The numbe
belka [17]

Answer:

2054

Step-by-step explanation:

The equation for the growth of people = 308.7(1097)^x

The equation for the growth of vehicles = 246(1155)^x

If the number of both are equal tham

308.7(1097)^x=246(1155)^x

Dividing both sides by 246

1.254878(1097)^x=(1155)^x

Dividing both sides by (1097)^x

1.254878=(1155÷1097)^x

X=4.406 decades

X=44 years

5 0
2 years ago
A dolphin was swimming 6 feet below sea level. The number line shows the
Ksju [112]

On the number line, move 4 units to the right. End at -2. The dolphin was 2 feet below sea level.

<h3>What is number line?</h3>

A number lines are the horizontal straight lines in which the integers are placed in equal intervals.

A dolphin was swimming 6 feet below sea level.  It then swam up 4 feet.

So, -6+4= -2 feet

As, from the information

On the number line, move 4 units to the right. End at -2. The dolphin was 2 feet below sea level.

This is because the dolphin 6 feet below sea level and swam up 4 feet.

Learn more about this concept here:

brainly.com/question/14379626

#SPJ1

5 0
1 year ago
IS IT A OR B PLEASE ANSWER FOR BRAINLIEST!!!
maks197457 [2]
I say the answer is A, correct me if I'm wrong.
5 0
3 years ago
f(x) = x2. What is g(x)?SIf(x)= x/g(x)(2,1)-5O A.06)-()O B. g(x) = 2x2O C. g(x)-9(x)=(*)O D. g(x)= x2
Andrew [12]
Explanation

As you can see all the possible answers have the same form:

g(x)=ax^2

By looking at the picture you'll notice that the graph of g(x) has to pass through the point (2,1). Remember that the points in the graph of g(x) have the form (x,g(x)). Since (2,1) is part of the graph of g(x) then we have the following:

\begin{gathered} (2,1)=(x,g(x)) \\ x=2 \\ g(2)=1 \end{gathered}

So let's evaluate the expression for g(x) that we wrote before at x=2. This way we'll obtain an equation for the number a:

\begin{gathered} g(2)=1=a\cdot2^2 \\ 1=4a \end{gathered}

Then we can divide both sides by 4:

\begin{gathered} \frac{1}{4}=\frac{4a}{4} \\ a=\frac{1}{4} \end{gathered}

Then we get:

g(x)=\frac{1}{4}x^2=(\frac{1}{2}x)^2Answer

Then the answer is option A.

3 0
11 months ago
a pond is being dug according to plans that have a scale of 1 inch= 6.5 feet. The maximum distance across the pond is 9.75 inche
cestrela7 [59]

We are given a scale that for every 1 in on the plan, the actual length will 6.5 ft. 

The maximum distance across the pond on the plan is 9.75 in. So that means we will need to take 6.5 ft 9.75 times. So our answer is 

6.5*9.75=63.375 ft. That's the answer. 

We can visualize this a different way

1 in = 6.5 ft

9.75 in = x ft

And from here it's a little more clear to see what needs to be done. 

Hope this helped! 

6 0
3 years ago
Read 2 more answers
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