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Shkiper50 [21]
3 years ago
8

Which are the best buys?ay 3 books for Rs 60 or 5 same books for Rs 90​

Mathematics
2 answers:
kogti [31]3 years ago
8 0

Answer:

Sine 3 books are for 60-

60/3

Rs20 (per book)

and 5 books for Rs 90-

90/5

Rs18 (per book)

Thus we can save 2Rs and 5 books for Rs 90 iscthe best buy

Katen [24]3 years ago
8 0
5 for 90 because 90/5 is 18 and 60/3 is 20 so you save 2 . You need to know how much each individual book costs
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7+ (-5)+(-2)=0<br> 7+ (5)+(2)=0<br> 7+(-4)+(-3)=0<br> 7+(-6)+(-1)=0
luda_lava [24]

Answer:

Wish I could help try the tutor or brainy scanner.

6 0
3 years ago
Read 2 more answers
HELP PLZZZZ DOING
Natasha_Volkova [10]
Hi,
The answer would be unit C. The distance between -80 & 0 is 80. The distance from 0 to 15 is 15. So 80+15=95. Hope this helps.
6 0
3 years ago
Solve for x. 1/2x + 3 = 2/3x + 1
makvit [3.9K]

Answer:

x = 12

Step-by-step explanation:

\frac{1}{2} x + 3 = \frac{2}{3} x + 1

multiply through by 6 ( the LCM of 2 and 3 ) to clear the fractions

3x + 18 = 4x + 6 ( subtract 3x from both sides )

18 = x + 6 ( subtract 6 from both sides )

12 = x

5 0
1 year ago
two points on the same side of a tree are 65 feet apart. the angles of elevation of the top the tree are 21 19 from one point an
zloy xaker [14]
The question is find the height of the tree, given that at two points 65 feet apart on the same side of the tree and in line with it, the angles of elevaton of the top of the tree are  21° 19' and 16°20'.

1) Convert the angles to decimal form:

19' * 1°/60' = 0.32° => 21° 19' = 21.32°

20' * 1°/60' = 0.33° => 16° 20' = 16.33°

2) Deduce the trigonometric ratios from the verbal information.

You can form a triangle with

- horizontal leg  x + 65 feet
- elevation angle 16.33°
- vertical leg height of the tree, h

=> trigonometric ratio: tan (16.33) = h /( x + 65) => h = (x+65) * tan(16.33)

You can form a second triangle with:

-  horizontal leg x
- elevation angle 21.32°
- vertical leg height of the tree, h
 
=> trigonometric ratio: tan(21.32) = h / x  => h = x * tan(21.32)

Now equal the two expressions for h:

(x+65)*tan(16.33) = x*tan(21.32)

=> x*tan(16.33) + 65*tan(16.33) = x*tan(21.32)
=> x*tan(21.32) - x*tan(16.33) = 65*tan(16.33)
=> x = 65*tan(16.33) / [ tan(21.32) - tan(16.33) ] = 195.73 feet

=> h = 195.73 * tan(21.32) = 76.39 feet.

Answer: 76.39 feet
5 0
3 years ago
Anyone mind helping me ?
storchak [24]

Answer:

<GOJ

Step-by-step explanation:

O is the center of the circle

So central angle is <GOJ

3 0
3 years ago
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