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Mars2501 [29]
3 years ago
7

I need help with question that has density in it pls help me

Mathematics
1 answer:
Sliva [168]3 years ago
3 0

Answer:

the answer is 3.9

Step-by-step explanation:

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Two women were complaining about their teenagers’ preoccupation with clean hair. One moaned, “My four boys will use up three bot
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Girls 5%

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3x+y=15 <br> 3x-y=15 (using elimination method)
morpeh [17]

Answer:

x = 5

y = 0

Step-by-step explanation:

3x + y = 15

3x -y = 15

Add the two equations;

6x = 30

Inverse operations;

6x = 30

/6        /6

x = 5

Back substitute;

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3 years ago
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A university class has 22 students: 3 are nursing majors, 9 are psychology majors, and 10 are business majors. (Each student has
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Answer:

27/462

OR

.058

Step-by-step explanation:

the probability that the first student, selected at random, is a nursing student is 3/22.

the probability that the second student, selected at random from the remaining students, is an accounting major is 9/21.

the probability the first student chosen is a nursing student and the second student chosen is an accounting major is therefore 3/22 * 9/21 = 27/462.

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2 years ago
Blake has 864 square inches of material with which to create a hollow three-dimensional container. He decides to make either a c
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I think it's a cube, because the cube has bigger spaces because of the edges, but I don't know how much...

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2 years ago
Solve the system of equations.
guajiro [1.7K]

Answer:

Option 2: (1, 0) and (0, -5)

Step-by-step explanation:

Let's solve this system of equations using the elimination method.

Start by labelling the two equations.

5x -y= 5 -----(1)

5x² -y= 5 -----(2)

(2) -(1):

5x² -y -(5x -y)= 5 -5

Expand:

5x² -y -5x +y= 0

5x² -5x= 0

Factorise:

5x(x -1)= 0

5x= 0 or x -1= 0

x= 0 or x= 1

Now that we have found the x values, we can substitute them into either equations to solve for y.

Substitute into (1):

5(0) -y= 5 or 5(1) -y= 5

0 -y= 5 or -y= 5 -5

y= -5 or -y= 0

y= 0

Thus, the solutions are (0, -5) and (1, 0).

3 0
2 years ago
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