The temperature at 9:00 AM was 42°F. The temperature dropped 9 degrees per hour for the next seven hours. What is the temperature at 4:00 PM?

Answers

Answer 1

Hey there! I'm happy to help!

Let's call our hours h. Here is what we have going on.

42-9h

4:00 PM is 7 hours after 9:00 AM. So, we will replace the h with 7 and evaluate.

42-9(7)

42-63=-21

Therefore, the temperature would be -21°F.

Have a wonderful day! :D


Related Questions

If pennies and dimes come in rolls of 50 coins each, while nickels and quarters come in rolls of 40 coins each, how many dollars is 5 rolls of pennies, 6 rolls of nickels, 7 rolls of dimes, and 8 rolls of quarters?

Answers

The answer to your question is:
Pennies = $ 2.50
Nickels = $12
Dimes =$35
Quarters= $80

We will have $129.5 of 5 rolls of pennies, 6 rolls of nickels, 7 rolls of dimes, and 8 rolls of quarters.

Given:

Pennies ( $0.01 ) come in rolls of 50 coins each,

Dimes ( $0.1 ) come in rolls of 50 coins each,

Nickels ( $0.05 ) come in rolls of 40 coins each,

and Quarters ( $0.25 ) come in rolls of 40 coins each.

5 rolls of pennies, 7 rolls of dimes, 6 rolls of nickels, 8 rolls of quarters came.

Thus,

[tex]\begin{aligned} \rm{Total\; Value}&=0.01 \times 50 \times 5 + 0.1 \times 50 \times 7 + 0.05 \times 40 \times 6 + 0.25 \times 40 \times 8\\&= 2.5 + 35 + 12 + 80\\&= \$129.5 \end{aligned}[/tex]

Thus, in total, we will have $129.5 of 5 rolls of pennies, 6 rolls of nickels, 7 rolls of dimes, and 8 rolls of quarters.

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solve for the value of x 1+6.9x=-1.8+5.9x

Answers

Answer:

x=-2.8

Step-by-step explanation:

[tex]1+6.9x=-1.8+5.9x\\\\1-1+6.9x=-1-1.8+5.9x\\\\0+6.9x=-2.8+5.9x\\\\6.9x=-2.8+5.9x\\\\6.9x-5.9x=-2.8+5.9x-5.9x\\\\1x=-2.8+0\\\\x=-2.8[/tex]

The slope of the line that goes through the points (1,-19) and (-2,-7) is

Answers

Answer:

Slope is -11/3

Step-by-step explanation:

Let (x1,y1) = (1,-19) and (x2,y2) = (-2,-7)

Slope = (y2-y1)/(x2-x1)

-8-(-19)/(-2-1) = -8+19/-3 = -11/3

Answer:D

Step-by-step explanation:

The graph shows the relationship between mass of hamster food and the number of days it takes Gabin's hamster to eat it. What does 30 mean in this situation? Choose 1 answer: Choose 1 answer: (Choice A) A Gabin's hamster eats a gram of food every 30 days. (Choice B) B Gabin feeds his hamster once every 30 days. (Choice C) C Gabin's hamster eats 30 grams of food a day.

Answers

Answer:

c

Step-by-step explanation:

just gonna say it lol not about to give an explanation

Answer:

C

Step-by-step explanation:

WILL GIVE BRAINLIEST! Use Vieta’s formulas to find the sum and the product of the roots of the equation: y^2−19=0 y1+y2= ? y1 * y2= ?

Answers

Answer:

y1+y2=0; y1*y2 = -19

Step-by-step explanation:

We have y^2-19=0

Let's solve the equation

y^2=19

y=sqrt(19); y= - sqrt(19)

From there you can solve for the answer ;)

Kira is solving the equation 3(2x + 5) - (5x - 2) = 42. Her steps are shown below.
Step 1: 6x + 15 - (5x - 2) = 42
Step 2: 6x + 15 - 5x - 2 = 42
Step 3: x + 15 – 2 = 42
Step 4: x + 13 = 42
ď
D) 2.
In which step does a mistake first appear?
D.
CLEAR AL
help ?

Answers

Answer:

D)2

the minus sign outside the bracket when multiplied by a negative number in the bracket is equal to a positive number

Answer:

D) 2

Step-by-step explanation:

QUICK! 10 points! Which of the following inequalities is correct?

-5 > 0
-2 > -5
-5 < -8
10 < -13

Answers

Answer:

The inequality that is correct is -2>-5

Step-by-step explanation:

The "lesser" the number is for negative the greater I actually is. For instance if you take -67 and -100, although -100 may seems greater, it is actually less than -67. Hope this helps

2x-10+2x-5=3x+1
Find X
Seriously I can't with Algebra

Answers

Answer:

x=16

Step-by-step explanation:

Starting equation:

2x-10+2x-5=3x+1

First combine all like terms on the left side

4x-15=3x+1

Now subtract 3x from both sides so that x is only on the left

x-15=1

Finally add 15 to both sides to isolate your variable

x=16

Answer:

x = 16

Step-by-step explanation:

2x-10+2x-5=3x+1

Find X

2x - 10 + 2x - 5 = 3x + 1  combine similar terms

2x + 2x - 3x = 10 + 5 + 1  simplify

x = 16  

Where is -2 3/4 placed on a number line? HURRY

Answers

Answer:

between -2 and -3

Step-by-step explanation:

-2 3/4 is another way of saying -2.75 which lies between -3 and -2

Filbert makes $14 per hour. If he makes time and a half for overtime, how much will he make for working 63 hours?

Answers

Answer:

$1323.00

Step-by-step explanation:

A simple equation that can be used to figure this out is:

p*1.5*o=t

The variables mean:

p- hourly pay

o- hours worked overtime

t- total amount of money earned.

(Also, the 1.5 is always used to calculate overtime, no matter what job, unless otherwise specified, and as referred in the problem as "time and a half").

So, to finally work out this problem:

($14*1.5)*63=?

first, (14*1.5)= $21

($21*63)= $1323.

2) 2n - 4
Factor the common factor out of each expression

Answers

Answer:

2(n-4)

Step-by-step explanation:

The common factor of this expression is 2 because it can divide into both 2n and 4; therefore, if you divide the entire expression by 2, you'll result in an answer of 2(n-4).

The common factor out of each expression 2(n-4)

Since factorization is the technique of breaking a number into smaller numbers that multiplied together will give that original form.

We are given the expression;

2n - 4

The common factor of this expression is 2

Since it can divide into both 2n and 4;

Therefore, if we divide the entire expression by 2, results in an answer of 2(n-4).

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Write and solve an equation to find the number of miles you must drive to have the same cost for each of the
car rentals. Let m represent the number of miles.
20 plus $0.50 per mile
$30 plus 50.25 per mile
Write an equation

Answers

Answer:

20+0,5m=30+0,25m

0,5m-0,25m=30-20

0,25m=10/0,25

m=40

Step-by-step explanation:

Equation for the given condition is equals to 20+ 0.50m = 30 +0.25m. Value of the m= 40miles.

What is an equation?

" Equation is defined as the algebraic expression which is represent by sign of equality."

According to the question,

m represent the number of miles

Cost for blue car rental = $20 + 0.50 per mile

                                       = 20 + 0.50m

Cost for red car rental = $30 + 0.25 per mile

                                     = 30 + 0.25m

Both the cars have same rentals.

Therefore,

Equation for the given condition

  20 +0.50m = 30 +0.25m

⇒0.50m - 0.25m = 30 - 20

⇒0.25m = 10

⇒m = 10 / 0.25

m = 40miles

Hence, equation for the given condition is equals to 20+ 0.50m = 30 +0.25m. Value of the m= 40miles.

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Look at the figure. Which ray is opposite of DE?

Answers

Answer:

BA

Step-by-step explanation:

Its exactly opposite of DE.

The length of a rectangle is 25
inches longer than 3 times its
width. The perimeter of the
rectangle is 130 inches. Find the
length and the width.

Answers

The width is 35in, the length is 95in

On a graph, which point is on the line of the equation
2x + 3y = 4?

Answers

Answer:

4

Step-by-step explanation:

Answer:4

Step-by-step explanation


if you can answer any of these please do and put the question number by the answer

Answers

Answer:

33. D.1/3

34. D. y= x+4

35. Slope= -2/3 Y-intercept= -6

Step-by-step explanation:

For number 33. D. 1/3 is the correct answer.

Start at the point (0,2) Then, Go up 1 and Right 3.

As a result, you land in the point (3,3) This proves that the slope is 1/3.

Note: the line is increasing and going upwards, so the slope is positive.

For number 34. D. y=x+4 is the correct answer.

When writing an equation of a line, the correct format is y=mx+b. We are given both m and b. So all we have to do is plug these values into the equation y=mx+b. As a result, we get y=1x+4, which also means y=x+4

For number 35. The Correct answer is: Slope= -2/3 Y-intercept= -6

For this question I can't see all the answer choices but I know that the  Slope is -2/3  and the Y-intercept is -6. Here's why: First you need to transform the equation 2x+3y=-18 into y=mx+b format. To do this, subtract -2x from both sides of the equation and you are left with 3y=-18-2x. You can flip -18 and -2x which makes the equation 3y=-2x-18. The next step is to divide both sides of the equation by 3, which gives you y=-2/3x-6. This means Slope= -2/3 and Y-intercept= -6

[tex]100 divided\frac{5}{6}[/tex]

Answers

Answer:1/3(9) no problem dawg

Step-by-step explanation:

Please help- I’ll give thanks and brainliest

Answers

Answer:

Step-by-step explanation:

WHAT ARE YOU TRYING TO FIND MESSAGE ME PLEASE

A student says the sum,difference,product, and quotient of two integers are always integers. do you agree? explain .

Please help .​

Answers

The student is not entirely correct. If the student said "the sum, difference, and product of two integers are always integers", then they would be fully correct. I left out "quotient".

Dividing two integers doesn't always lead to an integer result. For example, 10/7 = 1.43 approximately.

a rectangle has a width of 4 cm and a length of 8cm is scaled by a factor of 6.what are the side lengths of the scaled copy

Answers

Answer:

[tex]\huge\boxed{\text{Width: } 24 \ \ \ \text{Length: } 32}[/tex]

Step-by-step explanation:

When we scale an object by a scale factor, the side lengths become the scale factor times bigger than the previous sides. Therefore, with a scale factor of 6, the side lengths would be multiplied by 6.

[tex]4 \cdot 6 = 24\\\\4 \cdot 8 = 32[/tex]

Hope this helped!

What are the coordinates of point B on AC such that the ratio of AB to BC is 5 : 1?

Answers

Answer:

1 1/3, 3 1/3

Step-by-step explanation:

Lines can be divided in smaller segments by using ratios

The coordinates of B are: [tex]\mathbf{ (\frac{4}{3},-\frac{10}{3})}[/tex]

The given parameters are:

[tex]\mathbf{A =(-2,5)}[/tex]

[tex]\mathbf{C =(2,-5)}[/tex]

[tex]\mathbf{m : n = 5 : 1}[/tex]

The coordinate of B is calculated using:

[tex]\mathbf{B = \frac{mx_2 + nx_1}{m + n},\frac{my_2 + ny_1}{m + n}}[/tex]

So, we have:

[tex]\mathbf{B = \frac{5 \times 2 + 1 \times -2}{5 +1},\frac{5 \times -5 + 1 \times 5}{5 + 1}}[/tex]

[tex]\mathbf{B = (\frac{8}{6},\frac{-20}{6})}[/tex]

Simplify fraction

[tex]\mathbf{B = (\frac{4}{3},-\frac{10}{3})}[/tex]

Hence, the coordinates of B are: [tex]\mathbf{ (\frac{4}{3},-\frac{10}{3})}[/tex]

Read more about line ratios at:

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x + 300=369
Please help school work.

Answers

Answer:

Step-by-step explanation:

x + 300 =369

x = 69

subtract 300 on both sides

Hey there!

[tex]Answer:\boxed{x=69}[/tex]

[tex]Explanation:[/tex]

[tex]x+300=369[/tex]

To solve, you can do 369 - 300.

[tex]369-300=69[/tex]

Let's make x to 69 to see it it's true.

[tex]69+300=369[/tex]

x = 69 is true.

[tex]\boxed{x=69}\text{ is your answer.}[/tex]

Hope this helps!

[tex]\text{-TestedHyperr}[/tex]

How to write y=-1/2x + 1 in standard form

Answers

Hey there!

ANSWER: [tex]x+2y=2[/tex]EXPLANATION:

The equation in y=mx+b is [tex]y=-\frac{1}{2}x+1[/tex]

To write in standard form, it would look like: [tex]Ax+By=C[/tex]

As you can see, the x and y should be on the same side. You will need to move [tex]-\frac{1}{2}x[/tex] to the other side. When moving a number/variable to the other side, the sign changes, therefore, the negative sign will be removed. It is also the same as adding the opposite of it to both sides.

[tex]y=-\frac{1}{2}x+1\\ y+\frac{1}{2}x=-\frac{1}{2}x+\frac{1}{2}x + 1\\y+\frac{1}{2}x=1[/tex]

In standard form, there are no fractions, only whole numbers. The fraction can be removed by multiplying it by its opposite. The opposite of [tex]\frac{1}{2}[/tex] is [tex]\frac{2}{1} \rightarrow 2[/tex].

The entire equation has to be multiplied by 2:

[tex](y+\frac{1}{2}x=1) \times 2 \rightarrow 2y+x=2[/tex]

[tex]x+2y=2[/tex]

Hope this helps!

[tex]\text{-TestedHyperr}[/tex]


The table shows some ordered pairs that belong to quadratic function h.

Answers

Answer:

C. Are all real numbers greater than or equal to -8.

Step-by-step explanation:

Real numbers can be said to be all continuous values of quantity, which can be negative or positive values.

The range of h, h(x), in the table given are all real numbers.

The least of the range of h on the table is -8. All the other range values, namely, -7, 1, 17, and 41 are all greater than -8. None is less than -8.

Therefore, we can conclude that the range values of h "are all real numbers greater than or equal to -8".

What is the domain and range of f(x)=2x-5

Answers

f(x) is a linear function with no restrictions

Domain: x = All real numbers

Range: y = All real numbers

The Domain : {(−∞,∞), {x/x∈R} and Range : {(−∞,∞), {y/y∈R} of the function  f(x)=2x-5

What is a function?

A relation is a function if it has only One y-value for each x-value.

We have to find the domain and range of f(x)=2x-5

The domain of the expression is all real numbers except where the expression is undefined.

In this case, there is no real number that makes the expression undefined.

Interval Notation:(−∞,∞)

The range is the set of all valid y values.

Domain : {(−∞,∞), {x/x∈R}

Range : {(−∞,∞), {y/y∈R}

Hence, the Domain : {(−∞,∞), {x/x∈R} and Range : {(−∞,∞), {y/y∈R} of the function  f(x)=2x-5

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what are the factors of x^2 + 3x -4 ?​

Answers

Answer:

1 and -4

Step-by-step explanation:

cause when you factor the equation its (x-1)(x+4)

Answer:

[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{(x + 4) and (x - 1)}}}}}[/tex]

Step-by-step explanation:

[tex] \sf{ {x}^{2} + 3x - 4}[/tex]

Find the two numbers that multiplies to 4 and subtracts to 3. The numbers are 4 and 1

[tex] \dashrightarrow{ \sf{ {x}^{2} + (4 - 1)x - 4}}[/tex]

[tex] \dashrightarrow{ \sf{ {x}^{2} + 4x - x - 4}}[/tex]

Take x as common

[tex] \dashrightarrow{ \sf{x(x + 4) -x - 4}}[/tex]

Take 1 as common

[tex] \dashrightarrow{ \sf{x(x + 4) - 1(x + 4)}}[/tex]

[tex] \dashrightarrow{ \sf{(x + 4)(x - 1)}}[/tex]

Hope I helped!

Best regards! :D

sally had 224 dollars to spend on 8 books After buying them she had 16 dollars. How much did each book cost?

Answers

Answer:

28.50$

Step-by-step explanation:

244-16=228

228 divided by 8 = 28.5

each book cost 28.50$

What are real numbers?
Please explain very clearly, because I’m kinda dense

Answers

Answer:

A real number is a value of a continues quantity that can represent a distance along a line.

Answe

Step-by-step explanation:

How much warmer is it when the temperature is 17 degrees farenheit then when it is negative 11 degrees​

Answers

Answer:

6

Step-by-step explanation:

17 - 11 = 6

<hope i helped>

Can someone please answer this

Answers

Answer:

your answer is 3 this is a simple equation type this into to brainly next time it will give you the answer

The answer would be c
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