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Lunna [17]
3 years ago
12

Somebody help me with this please .

Mathematics
1 answer:
erastova [34]3 years ago
8 0

Step-by-step explanation:

12. Cos 60° = 8/c

0,5 = 8/c

0,5 c = 8

c = 16

D² = V16²-8²

= V256-64

=V192 = V16×12 = 4V12

= 4V4×3 = 8V3

13. Cos 30° = 6/b

V3/2 = 6/b

V3 b = 12

b = 12/V3

b/Sin B = a /sin A

b/Sin90° = 6/ sin 60°

<u>b</u> = <u> </u><u> </u><u> </u><u>6</u><u> </u><u> </u><u> </u>

1 V3/2

b× <u>V3</u> = 6

2

b = 6× 2/V3

= 12/V3

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Help meee. Photo is attached below
irinina [24]

Answer:

There are 2 more dogs than rabbits.

Step-by-step explanation:

If the ratio is for dogs to cats is 5:2 then there are 5 dogs. If it says dogs to cats, then whatever is mentioned first is the first number. So if there are 5 dogs, and there are 3 rabbits, the difference between 5 and 3 is 2.

I hope that helps :)

8 0
2 years ago
Plz help it’s due tonight i rlly need help thanks
belka [17]
i think we need some more information or something is there any other information that they give you for this question?
7 0
2 years ago
a rectangle has a side length 2x+9 and side width x. If the perimeter is 36 cm, what is the value of x?
alukav5142 [94]
2(2x + 9) + 2(x) = 36

4x + 18 + 2x = 36

Combine like terms.

6x + 18 = 36

Subtract 18 from both sides.

6x = 18

Divide 6 on both sides.

x = 3

Hope this helps!
6 0
3 years ago
600 is how many times as much as 20?
Montano1993 [528]

The value 600 is 30 times as much as 20

<h3>Ratio and proportion</h3>

Ratio are written in terms of fractions. The expression 600 is how many times as much as 20 can be written as;

600 = x *20

where x is the required value or factor

20x = 600

Divide both sides by 20

20x/20 = 600/20

x = 30

Hence the value 600 is 30 times as much as 20

Learn more on ratio and proportion here: brainly.com/question/19994681

#SPJ1

3 0
1 year ago
Find the perimeter of a rectangle whose lenth is 24cm and diagonal is 25cm​
VikaD [51]

Answer:

using Pythagoras theorem

breadth = √25^2 -24^2

=√47

= 7cm

P = 24+7+24+7 = 62

8 0
3 years ago
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