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GrogVix [38]
2 years ago
14

Which expression is represented by the model? A: x-3 B: x+3 C: -x-3 D: -x+3

Mathematics
2 answers:
Maurinko [17]2 years ago
5 0

Answer:

the answer is D

Step-by-step explanation:

stira [4]2 years ago
5 0
The answer is d

explanation is because there is a negative x and three positives so you add
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A ferry is travelling at a constant speed back to the dock, as shown in the graph. Which
PolarNik [594]

Answer:

<h2>y = -35x + 105</h2>

Step-by-step explanation:

The given graph represents a function between hours and miles.

To determine the equation that belong to this graph, first we need to find the slope using two points from the graph: (0, 105) and (3, 0).

The definition of slope is

m=\frac{y_{2} -y_{1} }{x_{2}-x_{1} } =\frac{0-105}{3-0}=\frac{-105}{3}=-35

Notice that the slope is -35. Remember that the slope is always the coefficient of variable x. So, the choice that has this slope is the right answer.

Therefore, the right answer is the last choice: y = -35x + 105

3 0
3 years ago
A major league baseball stadium sells three types of tickets. Reserved tickets are sold for $20 each, field-level tickets are so
Westkost [7]

There were six reserved tickets, three tickets for the field level, and one ticket for the box seat.

<h3>How many tickets for each do you have?</h3>

Let's say that x stands for the number of tickets that have been reserved, y stands for the number of tickets at the field level, and z stands for the number of tickets in the box seats.

Taking into consideration that a total of 10 tickets cost $370, the following equation may be used to express this data:

20x + 50y + 100z = 370........ (1)

x + y + z = 10 (2)

In addition, there were two times as many tickets for reserved seating as there were for field-level seating. The following equation may be used to express this:

x = 2y

x - 2y = 0...... (3)

The result of concurrently solving equations 1, 2, and 3 is that

x equals 6, y equals 3, and z equals 1

There were six reserved tickets, three tickets for the field level, and one ticket for the box seat.

Read more about equations

brainly.com/question/10413253

#SPJ1

8 0
1 year ago
Please help !!!! Urgent!!!<br> What is the value of K?
Over [174]

Answer:

29

Step-by-step explanation:

(5k-3) + (9+k) = 180

6k + 6 = 180

6k = 174

k = 29

mark brainliest please (button next to the thanks button)

5 0
3 years ago
Read 2 more answers
Help me please, you get 50 points. This is easy I just need help
pentagon [3]

Fraction -> Decimal

4/5 = 0.8

1/8 = 0.125

Decimal -> Percent

0.22 * 100% = 22%

0.47 * 100% = 47%

Percent -> Fraction

34% / 100 = 0.34 = 17/50

25% / 100 = 0.25 = 1/4

Fraction -> Percent

1/3 = 0.33... * 100% = 33.3%

2/5 = 0.4 * 100% = 40%

Decimal -> Fraction

0.65 = 65/100 = 13/20

0.4 = 4/10 = 2/5

Percent -> Decimal

81% / 100 = 0.81

4% / 100 = 0.04

Best of Luck!

8 0
3 years ago
Theresa Morgan a chemist has a 10% hydrochloric acid solution and a 65% hydrochloric acid solution. How many liters of each shou
prisoha [69]

<u>ANSWER: </u>

170 liters of 10% hydrochloric acid must be mixed with 1700 liters of 65% hydrochloric acid solution to obtain 1870 liters of 60% solution.

<u>SOLUTION: </u>

First, set up a table. Fill in the unknowns with variables x and y. The table is attached below

From this, we can easily set up the two equations.  

Sum of values of two acids = Value of mixture  

0.1x + 0.65y = 1122  

For convenience, we'll multiply the entire equation by 100,

10x + 65y = 112200   ------ (1)  

Now, Sum of amounts of each acid = Amount of mixture  

x + y = 1870  ---------(2)

multiply (2) with 10 for easy calculation and derive the equation into one variable.

10x + 10y = 18700  

Subtracting equation (2) from (1),  

( + ) 10x + 65y = 112200

( − ) 10x + 10y = 18700

we get the solution as,

0 + 55y = 93500

Thus, 55y = 93500

y = 1700

Substituting y = 1700 in (2),

x + 1700 = 1870  

x  = 1870 - 1700  

x  = 170  

So, we have x = 170 and y = 1700

We can conclude that 170 liters of 10% hydrochloric acid must be mixed with 1700 liters of 65% hydrochloric acid solution  to obtain 1870 liters of 60% solution.

4 0
3 years ago
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