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3 years ago

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Mathematics

1 answer:

MrRa [10]3 years ago

6 0

Answer:

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3x = 27

lawyer [7]

Answer:

Step-by-step explanation:

Since you are trying to make x on its own, you are trying to get rid of the co-efficient. The co-efficient is three, so you divide 3 by 3, which would equal one, leaving x on its own. Whatever you do to one side you do to the other, so you would divide 27 by 3 as well.

x = 9

8 0

4 years ago

Read 2 more answers

A man eamed $3000 the first year he worked. If he received a raise of $400 at the end of each year, what was his salary during t

kolezko [41]

Answer:

$\$3000+\$6000=\$9000$

Step-by-step explanation:

He has a raise of $400 at the end of each year, the we have to find how much is the total amount raised during the 15 years, then:

$\$400\times 15=\$6000$

The during the 25 years he has a total raised of $6000 as the salary during the first years was $3000, the salary during the 15th year is:

$\$3000+\$6000=\$9000$

3 0

4 years ago

What is an equation of the line that passes through the points (2, -1) and (3,-4)?

Wewaii [24]

Answer:

y=3x+5

Step-by-step explanation:

gradient =(y2-y1)÷(x2-x1)

(-4--3)÷(3-2)

=-3/1

y=mx+c

y+1/x-2=_3/1

y+1=-3x+6

y=3x+5

8 0

3 years ago

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Cinderella currently does chores for 120 minutes per day. Her evil step-mother wants her to do chores for 200 minutes each day.

Alex17521 [72]

Answer:

P = 120 * 1.1^x

Step-by-step explanation:

The generic equation for an exponencial function is:

P = Po * (1+r)^t

Where P is the final value, Po is the inicial value, r is the rate and t is the amount of time.

In this problem, we have that Po = 120, r = 10% = 0.1 and the time t is the variable x. So we can write the equation:

P = 120 * (1+0.1)^x

P = 120 * 1.1^x

Where P is how long Cinderella will do chores after x weeks.

6 0

3 years ago

The graph below shows the height through which an elevator travels, y, in x seconds: A graph is shown with x axis title as Time

Blababa [14]

Answer:

C. 10

Step-by-step explanation:

We are given a graph representing the height of the elevator with respect to time.

Since, we know that,

X-axis represents the 'time' in seconds and y-axis represents the 'height of the elevator' in feet.

As, the coordinate points on the graph are given by,

(1,10), (2,20), (3,30) and (4,40).

So, the rate of change can be found out by solving, $\frac{20-10}{2-1}=10$ .

Hence, the rate of change of the relationship is 10.

5 0

4 years ago

Read 2 more answers