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bixtya [17]
2 years ago
12

?????????????????????????????????????????????????????????????????????????

Mathematics
1 answer:
wlad13 [49]2 years ago
6 0

Answer:

1. at least 92

2. 25 dollars

3. 23 mintues

Step-by-step explanation:

You might be interested in
Question 13
Mrac [35]

Answer:

71.6 degrees

Step-by-step explanation:

Given the vectors

u= <8,4> v = <9.-9> (5 points)

u*v = (8, 4)*(9, -9)

u*v = 8(9)+(4)(-9)

u*v = 72 - 36

u*v = 36

|u| = √8²+4²

|u| = √64+16

|u| = √80

|v| = √9²+9²

|v|  = √81+81

|v|  = √162

Using the formula

u*v = ||u||v| cos theta

36 = √80(√162)cos theta

36 = √12960 cos theta

cos theta = 36/√12960

cos theta = 36/113.8

cos theta = 0.3162

theta = arccos(0.3162)

theta = 71.56 degrees

Hence the angle between the given vectors to the nearest tenth of a

degree is 71.6 degrees

5 0
2 years ago
50 POINTS + BRAINLIEST
Vedmedyk [2.9K]
X + 2y = 6
2y = -x + 6
  y = -1/2 x + 3 so slope = -1/2

parallel lines  has same slope = -1/2
perpendicular lines slope is opposite and reciprocal so slope = 2  
if slope not equal either -1/2 or 2 then neither.

y = -1/2 x - 5 ....m= - 1/2....  parallel

-2x + y = -4
          y = 2x - 4...m = 2 ....perpendicular

-x + 2y = 2
2y = x + 2
y = 1/2 x + 1 ...m = 1/2 ...neither

x + 2y = -2
2y = -x - 2
 y = -1/2 x - 1 ...m = -1/2 .....parallel

hope it helps
3 0
3 years ago
Read 2 more answers
Another equation for 32x - 12.8
Law Incorporation [45]
You can use a calculator and put is where I’d can tell you the answer
8 0
3 years ago
20 POINTSSSS
SVEN [57.7K]

Answer:

Really

Step-by-step explanation:

8 0
3 years ago
Umm can someone help? I’ll mark brainliest
aleksklad [387]

Answer:

the first is 70 and the second is 140

Step-by-step explanation:

6 0
3 years ago
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