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elena-s [515]
4 years ago
9

Gcse angle question help!

Mathematics
1 answer:
coldgirl [10]4 years ago
3 0
Each angle in a regular octagon =   135 degrees and 
Because of the 2 given equal angles BCDA is a trapezium, so
AD is parallel to BC  so < BCD + < CDA  = 180 degrees

Therefore < CDa = 180-135 = 45 degrees
and < CDJ = 180 - 45 = 135 degrees (adjacent angles).

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Question 7. Every day, Omar put the extra change from his pockets into a glass jar. After 30 weeks, he
FromTheMoon [43]

Answer:

$16

Step-by-step explanation:

He had $16 so he had spent all of it due to the question asked.

4 0
3 years ago
Increase 400 in the ratio 3:5
lesya [120]

Answer:

250.

Step-by-step explanation:

3 + 5 = 8. => (3/8) * 400 = 3 * 50 = 150. => (5/8) * 400 = 5 * 50 = 250.

4 0
3 years ago
Tell whether this equation has no solution, one solution, or infinitely
natali 33 [55]

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infinitely many solutions

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
-15p-16.5+30+4.5p. Need help
Ronch [10]

Steps to solve:

-15p - 16.5 + 30 + 4.5p

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10.5p + 13.5

Best of Luck!

3 0
3 years ago
A cylinder and a cone have the same volume. The cylinder has radius x and height y. The cone has radius 1/3x. Find the height of
slavikrds [6]

Answer:

The height of the cone h = 27(x^4)y

Step-by-step explanation:

Firstly, we calculate the volume of the cylinder.

Mathematically, the volume of the cylinder is pi * r^2 * h

using the radius x and height y

The volume V of the cylinder is ;

V = pi * x^2 * y

Now we know they have the same volume V, the formula for the volume of a cone is ;

1/3 * pi * r^2 * h

Substituting the values of r to be 1/3x and the height which is not given here left as h, we have the volume of the cone to be;

V = 1/3 * pi * (1/3x)^2 * h = pi * x^2 * y

The pi gives way as it cancels out on both sides and we have the following;

h/27x^2 = x^2y

Mathematically h = x^2 * y * 27x^2

h = 27(x^4)y

p.s: I personally feel the radius of the cone was to be given as x/3 and not 1/3x . It is in that way we can have the height of the cone purely in y terms and no x

8 0
3 years ago
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