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sergiy2304 [10]
3 years ago
5

33. Prove that x X (y X z) = (x • Z)y - (x •y)z. (Hint: First

Mathematics
1 answer:
My name is Ann [436]3 years ago
5 0

Answer:

http://math.gmu.edu/~nepstei2/301f14/answers-nextpart.pdfStep-by-step explanation:

go here and look

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Julie works in chicago and has to pay $14 per day on tolls and $76 a day for gas. If she makes $19 an hour how many hours must s
enot [183]

Answer:

19 hours.

Step-by-step explanation:

T = -14 -76 + 19h

The -14 is the cost for tolls, and the -76 is the cost for gas. The 19h is the amount she'll get per hour if she makes $19/hour. And T is the total profit

We want to solve for h if T = 260

260 = -14 -76 + 19h

+14      +14

274 = -76 +19h

+76    +76

350 = 19h

/19      /19

18.42 = h

She must work 19 hours.

Hope this helps!

5 0
3 years ago
Please help with this I will mark brainliest :)
bixtya [17]

Answer:

Triangles

Step-by-step explanation:

  1. Angle b
  2. Triangle BED
  3. Triangle ABC
5 0
3 years ago
A telephone booth that is 8 ft tall casts a shadow that is 4ft long. Find the height of a lawn ornanment that casts a 2 ft shado
sukhopar [10]
8 ft /4 ft of shadow=x / 2 ft of shadow
x=(8 ft * 2 ft of shadow) / 4 ft of shadow=4 ft

height of a lawn ornament=4 ft
5 0
3 years ago
HELP ASAP PLEASE ASAP PLEASE
Alexandra [31]

Answer:

it should be B

mark me as the brainliest please

3 0
3 years ago
A 185-pound person burns 260 calories during a soccer game. Find the number of calories that a 250-pound person would burn durin
Olin [163]

Answer: The answer to this problem is 178 calories.

Step-by-step explanation:

To calculate the answer, simply get the percentage of calories a person would burn during exercise (I am using a calculator BTW).

185 / 260 = 0.711538462

Then, calculate 71.1538462% of 250 pounds.

250 * 0.711538462 = 177.884616

Finally, round up your answer. 177.884616 rounded up is 178.

5 0
4 years ago
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