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Crank
3 years ago
7

Find 3x-y-3z if x=-2, y=1, z=-2

Mathematics
1 answer:
andriy [413]3 years ago
5 0

Answer:

-

Step-by-step explanation:

Answer is - 1 , but can't show work with smart phone. Don't own computer.

Use my head for most numbers. Sorry

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How many solutions does the system have? <br> y=3x-1<br> y=-2x+4
guapka [62]

Answer:

This system has one answer.

Step-by-step explanation:

This system only has one answer which are: x=1  y=2

Hope this helped! :)

8 0
3 years ago
Read 2 more answers
0.75(3.55a - 6b) simplified please ​
GREYUIT [131]

Answer:

Step-by-step explanation:

2.66a-6b

3 0
3 years ago
Suppose you had D dollars in your bank account. you spent $22 but have at least $28 left. how much money did you have initially?
nalin [4]

Answer:

Answer:

d--22→ 28

d→ 50

Step-by-step explanation:

Let d dollars be the initial amount in your bank account.

We have been given that you spent $22, so the amount left after spending $22 will be: .

We are also told that after spending $22, you have at least $28. This means that the amount left after spending $22 will be greater than or equal to $28.

We can represent this information in an equation as:

Therefore, the inequality represents the initial amount of money you had.

Now let us solve for d by adding 22 to both sides of our inequality.

Therefore, initially you had at least $50.

Still stuck? Get 1-on-1 help from an expert tutor now.

Step-by-step explanation:

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8 0
2 years ago
I need help to evaluate the function for the given value of x for y=2×5x; x=2
mars1129 [50]

Answer:

y= 20

Step-by-step explanation:

y=2*5x

Let x =2

y = 2*5 (2)

y = 10*2

y= 20

8 0
3 years ago
A submarine sits at -300 meters in relation to sea level. Then it descends 115 meters. What is it’s new position in relation to
Anna71 [15]

Answer:

A. -415m

Step-by-step explanation:

-300 meters is the starting point.

Then, the submarine goes 115m further below the surface, which can be represented as -115.

Add -300 and -115 and you get -415m.

3 0
3 years ago
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