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Harman [31]
3 years ago
10

10

Mathematics
1 answer:
liq [111]3 years ago
5 0

Answer:   39.25

========================================

Work Shown:

d = diameter = 10

r = radius = d/2 = 10/2 = 5

A = area of a full circle

A = pi*r^2 = 3.14*5^2 = 78.5

Cut this in half to get the area of a semicircle (aka half circle)

(78.5)/2 = 39.25

This result is approximate.

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Please explain how you got he answer no links please :)
charle [14.2K]

Answer:

4 is the gradient

Step-by-step explanation:

choose any two coordinate then apply the gradient equation

10-2= 8

3-1= 2

8/2= 4

4 is the gradient

5 0
3 years ago
50 is 20% of what number
Tresset [83]
20% of a number is 1/5th of it so 50 × 5 is 250
6 0
3 years ago
Which is the greater quantity? 1/4 of a box or 40% of a box? *
Aleks04 [339]

Answer:

40%

Step-by-step explanation:

Because if you change 1/4 into a decimal and then multiply it by 100 you will get the percentage and the percentage of 1/4 is 25% then look at which one is greater and 40% is greater than 25%(1/4)

3 0
3 years ago
Help me with the questions in the image
aliya0001 [1]

Answer:

12

96

9

38

25

Step-by-step explanation:

<h3>i.a+7 for a=5</h3>

5+7=12

<h3>ii.8(c+3) for c =9</h3>

8(9+3)

8(12)

96

<h3>iii.n+8 divided by 4 for n=28</h3>

=28+8 divided by 4

=36 divided by 4

=9

<h3>iv.6p+40 divided by 5 for p =5</h3>

=6×5+40 divided by 5

=30+40 divided by 5

=70 divided by 5

=38

<h3>v.3x+7 for x=6</h3>

=3×6+7

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=25

5 0
3 years ago
Is it possible to have a triangle such that none of the exterior angles is obtuse? Please help and explain
PolarNik [594]

Answer: No, it is not possible

A triangle can only have 1 obtuse interior angle, leaving the exterior angle next to it to be acute. For example, if you have an interior angle of 120 (obtuse) then the adjacent exterior angle is 60 (acute)

The other two interior angles must be acute if you go with 1 obtuse angle, which leaves the corresponding exterior angles to be obtuse. If you wanted the exterior angles to be all acute, then you would need 3 obtuse interior angles, but that is not possible.

Why isn't it possible to have 3 obtuse angles? Consider a triangle with interior angles A, B, C. The three angles must add to 180

A+B+C = 180

If A,B,C were all larger than 90, then

A > 90

B > 90

C > 90

A+B+C > 90+90+90

A+B+C > 270

but that contradicts A+B+C being equal to 180

6 0
4 years ago
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