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Free_Kalibri [48]
3 years ago
15

Please help me with this last problem thanks so much see image

Mathematics
2 answers:
ch4aika [34]3 years ago
7 0
By law of cosine we have the following equation:
 b ^ 2 = 28 ^ 2 + 22 ^ 2 - 2 * 28 * 22 * cos (34)
 Clearing b we have:
 b = root (28 ^ 2 + 22 ^ 2 - 2 * 28 * 22 * cos (34))
 Calculating we have:
 b = 15.7043214
 Rounding:
 b = 15.7 yd
 Answer:
 b = 15.7 yd
 option 1
vlabodo [156]3 years ago
6 0
(((A 15.7)))..............                               


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Janelle bought a beach chair on sale at 70% off. The original price was $59.99. Round answers to the nearest cent. a. Find the a
stealth61 [152]

Answer:

A. $41.99

B. $18.00

Step-by-step explanation:

To find discount: 59.99×0.7= 41.99

To find sales price: 59.99-41.99=18

8 0
3 years ago
a father is now 38 years older than his son. Ten years ago he was twice as old as his son. let x represent the age of the son no
Helga [31]

The present age of father is 86 years old and present age of son is 48 years old

<em><u>Solution:</u></em>

Given that, a father is now 38 years older than his son

Ten years ago he was twice as old as his son

Let "x" be the age of son now

Therefore, from given,

Father age now = 38 + age of son now

Father age now = 38 + x

<em><u>Ten years ago he was twice as old as his son</u></em>

Age of son ten years ago = age of son now - 10

Age of son ten years ago = x - 10

Age of father ten years ago = 38 + x - 10

Then we get,

Age of father ten years ago = twice the age of son ten years ago

38 + x - 10 = 2(x - 10)

28 + x = 2x - 20

2x - x = 28 + 20

x = 48

Thus son age now is 48 years old

Father age now = x + 38 = 48 + 38 = 86

Thus present age of father is 86 years old and present age of son is 48 years old

7 0
4 years ago
PLEASE HELP FAST!!
sertanlavr [38]

Answer:

104

Step-by-step explanation:

15 x 14= 210 divide by 2

105

180 - 105 = 75

15 + 14 + 75 = 104

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