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Katen [24]
2 years ago
11

Try to solve the system of equations. Explain the result.

Mathematics
1 answer:
Sauron [17]2 years ago
5 0

Answer:

x = -95, y = 22.75, z = -6.625

Step-by-step explanation:

We start with the line that only has 1 variable, since that's easiest to solve.

2y + 162 = -28

2y = -190

y = -95

Then we go to the line that has 2 variables and substitute y with -95, since that's what y is equal to.

4x -95 = -4

4x = 91

x = 22.75

Then we do the last line with the answers we've gotten so far.

-14(22.75) - 3(-95) + 4z = 7

-318.5 + 285 +4z = 7

4z = -26.5

z = -6.625

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A photo booth’s profit as a function of users is represented in the table. The function is quadratic.
Luda [366]

Answer:

The vertex represent the minimum amount of profit

Step-by-step explanation:

Plot the function to better understand the problem

Let

x ----> the number of users in thousands

y ---> the Monthly profit in thousands

using a graphing tool

see the attached figure

we have a vertical parabola open upward

The vertex represent a minimum

In the context of this problem

The vertex represent the minimum amount of profit

In this problem the vertex is the point (0.4,-4)

0.4 represent -----> 0.4(1,000)=400 users

-4=-4(1,000)=-$4,000 (profit negative)

3 0
2 years ago
Evaluate each variable expressions<br> 44 (k-6) when k Is 6
sertanlavr [38]
K = 6

plug in 6 for k

44(6 - 6)

Follow PEMDAS

6 - 6 = 0

44(0) = 0

your answer is 0

hope this helps
7 0
3 years ago
Its math please help me
Colt1911 [192]

Answer:

460

Step-by-step explanation:

if you look at the values you'll notice the next month is just half their value

7360 / 2 = 3680

3680 / 2 = 1840

1840 / 2 = 920

so

920 / 2 = 460 which should be month 5

7 0
1 year ago
The scatter plot below shows the average rent (in dollars per month) for a 1 bedroom apartment in new york city each year betwee
Ne4ueva [31]

Answer:

B) y=40x+800

Average Rent in 2020: $1600

Step-by-step explanation:

4 0
3 years ago
Part B Isabella's mother sells the peas and gets $3 for each square foot. So, multiply your answer from Part A by 3 to calculate
choli [55]

Answer:

See Explanation

Step-by-step explanation:

<em>The question is incomplete as the solution to part A (or part A itself) is not given. To solve this, I will assume a value to the supposes solution to part A.</em>

<em></em>

From the question:

1 square foot is sold at $3.

This implies that:

p square foot will be sold at $3p.

So, total sales can be calculated using:

Total = 3p

Now assume that p is 10 square feet (from part A).

The total will be:

Total = 3*10

Total = \$30

4 0
2 years ago
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