4 times a number plus 4 is twice the number

Mathematics

1 answer:

nekit [7.7K]3 years ago

7 0

Answer:

idk go back to 5th grade you might learn how to add but for ur answer is 8

Step-by-step explanation:

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14. Shaun has a bag with 12 yellow tiles and

ollegr [7]

3 should be added to the tiles

5 0

3 years ago

A 3 cm x 3 cm rectangle sits inside a circle with radius of 4 cm.

Ivanshal [37]

Step-by-step explanation:

you did not show us the picture or described what the shaded area is.

I assume it is the area of the circle without the inner square (as the "rectangke" is actually a square, because its sides are equally long).

so, we need to calculate the area of the circle and subtract the area of the square.

the area of the square is 3×3 = 9 cm².

the area of the circle is

pi×r²

with r being the radius.

so,

pi×4² = pi×16 = 16pi

the shaded area is then

16pi - 9 = 41.26548246... cm² ≈ 41.27 cm²

nothing of the answer options seems to be in that area, so maybe my assumption about the shaded area is wrong. or the specified answer options are mistyped. or both.

anyway, without additional information that is the best I can do.

8 0

2 years ago

Can someone explain step by step how to do this and how to get the numbers please? HELP HELP HELP!!

Alexxandr [17]

A = 113.1
so the formula for the area of a circle is
A = pi x r^2
-pi is 3.14(rounded)

-r stands for the radius of the circle which is half the diameter so for this circle your r or radius is 6 and the radius is just squared

so when you plug the numbers in the formula it is
A = 3.14 x 6^2(squared)

A = 3.14 x 36

A = 113.1