In a local city, the temperature at noon is Negative 3 degrees Celsius. The temperature is expected to decrease by 2.5 degrees Celsius each hour until the temperature reaches Negative 18 degrees Celsius. How many hours will it take for the temperature to reach Negative 18 degrees Celsius?

Answer:

c is actually correct lol

Step-by-step explanation:

g(x) = (x-4)(x+2)

set both (x-4) and (x+2) equal to zero

x-4=0

x=4

& bx+2=0

x=-2

c has 4 and -2 as x values

The given question is incomplete

Here are some letters and what they represent. All costs are in dollars.

m represents the cost of a main dish.

n represents the number of side dishes.

s represents the cost of a side dish.

t represents the total cost of a meal.

Discuss with a partner: What does each equation mean in this situation? a. a.  m = 7.50

b. m = s + 4.50

c . ns = 6

d. m + ns = t

2. Write a new equation that could be true in this situation.

Answer:

t = 3m -n(s+1)

Step-by-step explanation:

Using the information we can describe the value of each letters

using a and b

        7.50 = s + 4.50

         s = 3

substitute s in c, we get

using equation d we have

so we an equation using the above data

t +ns = 3m - n

t = 3m -n(s+1)

Answer:

a- 0.05n + 0.25(36 – n) = 6

Step-by-step explanation:

i just did it on edg

The value of each coin (Nickels and Quarters) determines their number in a money sum

The correct option that gives the equation that can be used to solve for the number of nickels, n, is option;

0.05·n + 0.25·(36 - n) = 6

Reason:

The given equation can be presented as follows;

[tex]\begin{array}{|c|c|c|c|}&\mathbf{Number}&\mathbf{Value}&\mathbf{Total \ value}\\&&&\\Nickels&n&0.05&0.05 \cdot n\\Quarters&36 - n&0.25 & 0.25 \cdot(36 - n)\\&&&\\\mathbf{Total}&36&&6\end{array}\right][/tex]

From the above table, we have;

0.05·n + 0.25·(36 - n) = 6

Solving the above equation gives;

0.05·n + 9 - 0.25·n = 6

-0.2·n = 6 - 9 = -3

[tex]n = \dfrac{3}{0.2} = 15[/tex]

Therefore;

The equation that can be used to solve for the number of nickels, n, is; 0.05·n + 0.25·(36 - n) = 6

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Answer – 7 years old

SOLVINGS

Let Kevin’s present age be ‘x’

In 56 years, Kevin’s age will be x + 56

In 56 years, Kevin’s age will be 9x

Therefore, x + 56 = 9x

Solving for x

x + 56 = 9x

9x – x = 56

8x = 56

x = 56/8

x = 7

Kevin is 7 years old right now.

Answer:

20x² - 8x + 14

General Formulas and Concepts:

Algebra I

Step-by-step explanation:

Step 1: Define expression

4x² - 7x - 24x² - 7x - 2 - (-3x - 8 - 3x - 8)

Step 2: Simplify

Answer:

¿Sigues regalando puntos gratis? como, avísele a una hermana !!

Step-by-step explanation:

to ng

Answer: -8x^4+28x^3-28x^2+8x

Answer:

0.125 inches per hour

Step-by-step explanation:

2.25/18 = 0.125

0.125in per hour

Answer:

m=1/2

Step-by-step explanation:

When finding the slope of a line on a graph, I like to count the steps up/down and to the side between two of the line's points. For this line, we can see that it has points at (2,-1) and (4,0). To get from (2,-1) to (4,0), you need to count

"up 1, over 2"

1/2

Therefore, the slope is 1/2.

HTH :)

Step-by-step explanation:

the process is shown in the above picture .

hope it helps

Answer:

Step-by-step explanation:

The correct question is

Zena needs a salesperson. Salesperson A is offering his services for an initial $50 in addition to $5 per hour. salesperson B is offering her services for an initial $40 in addition to $7 per hour. When will the two coaches charge the same amount of money?

Let

x ----> the number of hours

y ----> the total charge

we know that

Salesperson A

------> equation A

Salesperson B

------> equation B

To find out when the two coaches charge the same amount of money, equate equation A and equation B and solve for x

7x+40=5x+50

7x-5x=50-40

2x=10

Step-by-step explanation:

a&b equals the same meaning five hours

Answer:

y=3/2x+3

Step-by-step explanation:

The equation is in y=mx+b format. m is the slope, or steepness of the line, while b is the y intercept (where the line crosses with the y axis).

The given line shows the y intercept; it's 3.

To find the slope, use this equation: y2-y1/x2-x1

Pick any two points and plug them into the equation. For example, use (0,3) (y intercept) and (-2, 0) (x intercept.)

now,

3-0/0-(-2)

3/2

the slope is 3/2.

Now, the line is

y=3/2x+3.

Answer:

now from the top make it drop thats a wop

Step-by-step explanation:

Answer:

The answer is -6

Answer:

Step-by-step explanation:

If -3/2 and 5 are solutions to the quadratic equation, hence the expression will give;

(x-(-3/2))(x-5) = 0

(x+3/2)(x-5) = 0

Compare the resulting expression with (ax+b)(x+c)=0, we can see that;

ax = x

divide both sides by x

ax/x = x/x

a = 1

b = 3/2

-5 = +c

c = -5

Hence a = 1,  = 3/2 and c = -5

Answer:

They started shopping for cloths at 11:45 AM

Step-by-step explanation:

First of all we have to calculate the whole time that they spent in the mall starting from shopping.

They spent 1 hour on shopping, 1 hour and 30 minutes at food court and 30 minutes in video arcade which makes:

[tex]1 + 1.5+ 0.5 = 3\ hours[/tex]

as 30 minutes is equal to half hour so we used 0.5 in place of it.

Now we know that they left at 02:45 PM. We have to see what time it was 3 hours ago.

[tex]02:45\ PM - 03:00 = 11:45\ AM[/tex]

Hence,

They started shopping for cloths at 11:45 AM

Answer:

A

Step-by-step explanation:

This is a hopeless question. The best anyone can do is guess.

The only one that is completely wrong is C. It says that the more you watch TV the less snacks you eat. Not what the premise says.

D oddly enough could be. You might reach a pinacle and not want anything more. I don't think it is the intended answer, but it is possible.

B is hard to eliminate as well. There might not be any relationship at all or a very weak one. I think it should be eliminated because it most resembles C.

The answer is A. I think this is what you are intended to answer.

Answer:

x interpret: (20,0)

y interpret: (0,8)

Step-by-step explanation:

To find the x-intercept, set y = 0

To find the y-intercept, set x = 0

Answer:

2.1868932

Step-by-step explanation:

I would not call it neat but its not messy either. Its readable

Answer:

Your handwriting is legible and I can read it. It is not the worst handwriting ever but there is always room to improve in an area.

Step-by-step explanation:

Answer:

G=32 I think,

Step-by-step explanation:

Hope it helps

Answer:

G = 32

Step-by-step explanation:

To do this problem, we first should rewrite the problem.

g + (-5) =27

Turns into

g - 5 = 27.

Then you can do the problem:

g - 5 = 27

 + 5   + 5

----------------

g = 32

Hope this helped!

Answer:

The slope is 2

Step-by-step explanation:

Every time the x unit goes up one the y unit is going up 2

Answer:

no solution

Step-by-step explanation:

Answer:

[tex]x\geq -\frac{15}{2}[/tex]

Step-by-step explanation:

add 4 on both sides

leaves you with 15 on the right side

you then divide by negative 2

since you divide by a negative you have to switch the sign

Isolate the variable by dividing each side by factors that don't contain the variable.

Inequality Form:

x ≥ −15/2

Interval Notation:

[−15/2, ∞)

Answer:

y-6 = -7(x-3)

Step-by-step explanation:

[tex]y-y_{1} =m(x-x_{1})[/tex]

y - 6 = m(x - 3)

[tex]m = \frac{-8-6}{5-3}=\frac{-14}{2}=-7[/tex]

y-6 = -7(x-3)

Answer:

y - 6 = -7(x - 3)

General Formulas and Concepts:

Pre-Algebra

Algebra I

Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Point-Slope Form: y - y₁ = m(x - x₁)  

Step-by-step explanation:

Step 1: Define

Point (3, 6)

Point (5, -8)

Step 2: Find slope m

Step 3: Write equation

Point (3, 6)

Slope m = -7

y - 6 = -7(x - 3)

Answer:

y= -8x-2

Step-by-step explanation:

30-(-42)/-4-5 = slope = 72/-9 simplified to -8

Now that you have the slope, plug in the points

30=-8(-4)+b

30=32-2

B= -2

Answer:

8x = 32

x = 4

y = 6

Step-by-step explanation:

2.5y + 3x = 27

5x – 2.5y = 5

_____________

8x = 32 (equation obtained after adding the two equations)

x = 32/8

x = 4

Plug x = 4 in 2.5y + 3x = 27

2.5y + 3*4 = 27

2.5y + 12 = 27

2.5y = 27 - 12

2.y5= 15

y = 15/2.5

y = 6

The equation results of adding the two equations is 8x = 32.

The solution to the system is (4, 6).

A straight line on the coordinate plane is represented by a linear function. As an illustration, the equation y = 3x – 2 depicts a linear function because it is a straight line in the coordinate plane.

Any function whose graph is not a straight line is said to be nonlinear. Any curve other than a straight line can be a graph of it.

An example of a non-linear function is a quadratic function.

Given, A system of linear equations in variables 'x' and 'y'.

2.5y + 3x = 27...(i) and 5x - 2.5y = 5...(ii)'

Reaaranging eqn(i) we have

3x + 2.5y = 27...(iii)

Adding (ii) and (ii) we have,

8x = 32.       (As + 2.5y and - 2.5y cancels)

x = 32/8.

x = 4.

Putting the value of 'x' in eqn(i) we have,

2.5y + 12 = 27.

2.5y = 15.

y = 6.

So, The solution to the system is (4, 6).

learn more about linear equations here :

https://brainly.com/question/11897796

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Answer:

-16

Step-by-step explanation:

Replace x by -1, and y by 2. If you simplify it, you get -16

Answer:

Step-by-step explanation:

Given

To find

Substituting values:

24 hours

Because 24 hours equals 1 day or one rotation of the clock

Answer:

1 hour 5  9/20 minutes

Step-by-step explanation: