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lisov135 [29]
3 years ago
13

True painful question. If you get it right, automatic brainliest. 5 stars and thanks for ALL, even for comments. I am sorry for

spamming Khan Academy questions...

Mathematics
1 answer:
Over [174]3 years ago
6 0

Answer:

31.4/3.14=10

10/2=5

5 x 5 = 25

25 x 3.14 = 78.5

78.5 is the correct answer

Step-by-step explanation:

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Add.
Ann [662]

Answer:

17. +5-2-1=+2

18. -7-6-2=15

19. +11-9-4=-2

20.+4-8+6=+2

6 0
3 years ago
EXTRA POINTS! volume of spheres.
BartSMP [9]

Answer:

V≈33.51

although I don't have an explanation, sorry, if you look up "how to find the volume of a sphere" on google, it will give you the answer

3 0
3 years ago
How do you make 'a' the subject of the formula: ab - cd = ac
xxTIMURxx [149]
First bring all terms in 'a' to the left side of the formula by subtracting ac from both sides

ab - ac - cd = ac - ac 
ab - ac - cd = 0
now add cd to both sides
ab - ac -cd + cd = cd
ab - ac = cd
now factor the left side by taking out the 'a' 
a(b-c) = cd
now divide both sides by (b-c)
a = cd / (b-c)
done

3 0
3 years ago
If x2 = 40, what is the value of x?
Alina [70]
If you mean 2x=40 x=20 
but if you mean x^2=40 i think its x=80

8 0
3 years ago
Read 2 more answers
HELP!!!!! ASAP PLEASE!!!!!!!!!!
Nataly_w [17]

Answer:

Tangent line states that a line in the plane of a circle that intersect the circle in exactly one point.

Common external tangent states that a common tangent that does not intersects the line segment joining the centers of circle.

Common internal tangent states that a common tangent that intersects the line segment joining the centers of circle.

Circumscribe polygon states that a polygon with all sides tangent to a circle contained within the polygon.

Therefore:

A polygon with all sides tangent to a circle contained within the polygon = Circumscribe polygon

A common tangent that intersects the line segment joining the centers of circle = Common internal tangent

A common tangent that does not intersects the line segment joining the centers of circle = Common external tangent

a line in the plane of a circle that intersect the circle in exactly one point = Tangent line

3 0
3 years ago
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