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3 years ago

I am confused i need help

Mathematics

1 answer:

lawyer [7]3 years ago

7 0

Answer:

1. y = -x + 2, slope = -1, y-intercept = 2

y = -x + 3, slope = -1, y-intercept = 3

2. When lines have the same slope and different y-intercepts they are parallel lines. Parallel lines never intercept. Because these lines never intercept, they have no solution.

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5x^2 -4 evaluate each of the following (show your steps):

schepotkina [342]

Answer:

25x-4

Step-by-step explanation:

5x^2=5x multiplied by 5x= 25x

25x-4 is simpliest form and evaluated

Have a great day, and good luck!

7 0

4 years ago

Jessica is printing invitations to a graduation party. She needs to print 250 invitations one per sheet of paper. She was only a

kotegsom [21]

125 is the answer m8

4 0

4 years ago

At the beginning of the semester students reported that they spend an average of 5 hours per day watching television, decreasing

Katyanochek1 [597]

Answer:

(a) $X(t)=X(0)+\Delta X*t=5-0.5*t$

(b) $X(t)=X(0)+\Delta X*t=1+0.5*t$

Step-by-step explanation:

a) For the students, they start at X(0)=5 h and ΔX=-0.5 h/week.

We can write

$X(t)=X(0)+\Delta X*t=5-0.5*t$

b) For the professors, they start at X(0)=1 h and ΔX=+0.5 h/week.

We can write

$X(t)=X(0)+\Delta X*t=1+0.5*t$

c) The seew which they will be watching the same amount of hours will be the 4th week.

$X(t)=5-0.5*t=1+0.5*t\\\\5-1=(0.5+0.5)*t\\\\t=4\, weeks$

The amount of hours will be

$x(4)=1+0.5*4=1+2=3\,hours$

7 0

3 years ago

Which is bigger 0.45 or 2/5

pickupchik [31]

<span>The biggest out of the two possible answers is 0.45. 2/5 in decimal form is 0.4, or in percentage form becomes 40%. However, if 0.45 is changed into a fraction, it becomes 9/20 in its smallest form, which is difficult to compare. If we consider 0.45 as a percentage, however, it obviously becomes 45%, which is bigger than 40% so we can confirm that 0.45 is larger than 2/5.</span>

4 0

3 years ago

At a local gym you go to, you either pay $90 fee for a monthly pass, and an additional $4 for each time you decide to go to the

Vikentia [17]

Answer: C. 10.

Step-by-step explanation:

Let x = Number of times you have to go to the gym in order for it to cost the same amount.

Given: Monthly pass fee = $90

Additional charge = $4

Total amount = (Monthly fee) + (Number of times) (Additional charge)

Total amount = 90+4x (i)

Payment for each time you go to the gym = $13

Total amount = 13x (ii)

From (i) and (ii) , we get

$13x=90+4x\\\\\Rightarrow\ 13x-4x=90\\\\\Rightarrow\ 9x=90\\\\\Rightarrow\ x=\dfrac{90}{9}\\\\ \Rightarrow\ x= 10$

Hence, the number of times you have to go to the gym in order for it to cost the same amount= 10

Hence, the correct option is C. 10.

5 0

3 years ago