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Yuliya22 [10]
3 years ago
9

8x + 17- 2x -9 =?? ,

Mathematics
1 answer:
levacccp [35]3 years ago
5 0

Answer:

Step-by-step explanation:

So for the first one 8x is similar to -2x so you put them together and get 6x and posiative 17 and -9 are similar so you put those together and get 8 so the first eqaution is 6x+8 and for the second one 7y and 10y are similar also know as like terms so you put those together and get -3y becuase the seven is before the 10y and so the equation is -3y+11

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The number 7 is what percent of 80
xz_007 [3.2K]

Answer:

5.6

Step-by-step explanation:because if you divide correctly it will equal 5.6

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3 years ago
HELP ME PLEASE!!!!!!! What is the volume of the cube?
tatiyna
The answer is A. 3375 mm^3. This is because, since it is a cube, all of the sides are the same, meaning that you have to do 15 × 15 = 225, and then multiply that by 15 which is 3375. I hope this helps!
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3 years ago
What is the total area of the figure below?
Gnesinka [82]

Answer:

141 square inches

Step-by-step explanation:

Area of a triangle: Base*Height*1/2

Area of a trapezoid: Height * (Base1 +Base2) / 2

Triangle Base = 6

Triangle Height = 8

6*8*1/2 = 24 square inches

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3 0
2 years ago
A grab bag contains 12 packages worth $.70 each, 15 packages $.40 cents each, and 25 packages worth $.30 each. what is the expec
Salsk061 [2.6K]

The expected value of the discrete distribution, if you have to pay $.50 to pick one package at random, is of -$0.08.

<h3>What is the mean of a discrete distribution?</h3>

The expected value of a discrete distribution is given by the <u>sum of each outcome multiplied by it's respective probability</u>.

For this problem, considering the cost of $0.5, the distribution is given as follows:

  • P(X = 0.2) = 12/(12 + 15 + 23) = 12/50 = 0.24.
  • P(X = -0.1) = 15/(12 + 15 + 23) = 15/50 = 0.3.
  • P(X = -0.2) = 23/(12 + 15 + 23) = 23/50 = 0.46.

Hence the expected value is given by:

E(X) = 0.2 x 0.24 - 0.3 x 0.1 - 0.2 x 0.46 = -$0.08.

More can be learned about the expected value of a discrete distribution at brainly.com/question/13008984

#SPJ1

8 0
2 years ago
Annie buys some greeting cards. Each card costs $1.75. She pays with a twenty dollar bill.
zaharov [31]

Answer:

Step-by-step explanation:

7 0
3 years ago
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