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Ann [662]
3 years ago
5

Sally needs to find the circumference of a circle with a diameter of 20 inches. She uses a calculator to find the circumference.

Which answer is
reasonable?
A. 60.133574 in
B. 70.893927 in
C. 62.831185 in
D. 65.531319 in
Mathematics
2 answers:
Vlad1618 [11]3 years ago
7 0

Circumference = pi*diameter

C = pi*20

C = 20pi

When I used my calculator to compute 20*pi, I get approximately 62.83185

This is somewhat close to what choice C is saying. The difference is that choice C has an extra 1 buried inside it. I'm not sure if your teacher made a typo.

Sphinxa [80]3 years ago
3 0
C

Circumference of a circle: C = 2πr π = 3.14 r = 20/2= 10
C = 2*3.14*10
6.28*10= 62.8

Hope that helps!
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(it says 8.5 at the left edge of orange) Find the total area of the prisms
tiny-mole [99]

Answer:

273.295 m^3

Step-by-step explanation:

Well I'm going to assume your talking about the volume first. :> So, let's find the orange one first cuz yes.

The rectangular prism has the volume of 8.5 x 5.7 x 4.3 and I think you should just use a calculator but I'll just tell you that the volume of this one is 208.335

Now we need to find the volume of the triangular prism which has side lengths of 3.5 6.4 and 5.8 . Now we must remember the strategy for finding the volume of a triangular prism is different because the formula is
V =(1/2)× b × h × l so lets plug in our values. Well, first 3.5 x 6.4 x 5.8 is 129.92 and then we multiply that by 1/2 and I'll tell you that it's 64.96

Finally, let us add the two values to find the total area. 208.335 + 64.96 is... 273.295 now remember the units it meters cubed!

7 0
2 years ago
What’s the measure of angle F?
Naily [24]

Answer:

F = 105

Step-by-step explanation:

The  sum of the interior angles of a polygon with n sides is (n – 2)180.

This polygon  has 6 sides so the sum of the interior angles is (6-2) * 180 =

720

Add up the angles

x-60 +x-40 +130 +120 +110 + x-20 +x-20 = 720

Combine like terms

4x +220 = 720

Subtract 220 from each side

4x+220-220 = 720-220

x = 500

Divide each side by 4

4x/4=500/4

x = 125

We want to find angle F

F = x-20

   = 125-20

   105

3 0
3 years ago
Determine the interval(s) on which the given function is decreasing.
Gre4nikov [31]

A function is decreasing if, reading from left to right, we can see that the graph of the function goes down.

Here we can't see the graph, but we have a brief description.

"the graph goes up until it reaches a maximum at (0, 5), then the graph reaches a relative minimum at (1, 4), then it goes up again"

Now, the graph was going up until it reached the maximum, so at that point, the graph starts going down.

The graph will go downwards until it reaches the minimum, at that point the graph starts increasing again.

So the graph only goes down between x = 0 and x = 1.

we can conclude that the interval on which the given function is decreasing is [0, 1]

If you want to learn more, you can read:

brainly.com/question/21287583

3 0
3 years ago
PLS help ill give 50 points to the person who answers correctly The instructions of an art project tell students to cut a piece
MrMuchimi

Answer:

no guaranteed classification

Step-by-step explanation:

We know that the quadrilateral has two pairs of congruent sides. Both a rectangle and a parallelogram have two pairs of congruent sides. The difference between them is their angles. But we don't know anything about the angles in the figure, so we cannot know which kind it is.

4 0
3 years ago
Mary has 2 more video games than John. Together, they have 30 video games.
k0ka [10]

Answer: Mary has  16 video games.

Step-by-step explanation:

x+(x+2) =30

2x + 2 =30

       -2   -2

2x =28

x= 14  

(14+ 2) = 16

5 0
3 years ago
Read 2 more answers
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