In 1924, the temperature in St. Louis, Missouri, dropped from 53 degrees to −11 degrees in 8 hours. What was the average hourly change in temperature?

(pls this is for a test rn)

Answers

Answer 1

Answer: -8°

Step-by-step explanation: the temperature dropped by 64 degrees over the span of 8 hours. 64/8 = 8.


Related Questions

Which of the following macromolecule provides quick energy to cells?

O lipid
O protein
O carbohydrate
O nucleic acid

Answers

Answer:

c

Step-by-step explanation:

I definitely didn't searched it

the jasmine family kept a log of the distance they traveled during a trip, as represented by the graph below
during which interval was their average speed the greatest

Answers

Answer:

I would say its 4, the eighth to tenth hour.

1. Kai teaches music lessons as an independent contractor. Last month, he taught 41
music lessons at $65 each. Determine the amount of Kai's self-employment taxes for
last month, using the tax rate of 15.3%.

Answers

The amount for Kai's self employment taxes for the last month is  $407.745  .

In the question ,

it is given that

number of music lessons that Kai taught = 41

per music lesson charge = $65 .

the tax rate for self employment = 15.3%

So, the total amount earned is = (number of classes)*(per class charge)

= 41*65 = $2665  

According to the question .

Kai's self employment tax = 15.3% of total amount earned

On substituting the values , we get

Kai's self employment tax = 15.3% of 2665  

= 0.153*2665

= 407.745

Therefore , The amount for Kai's self employment taxes for the last month is  $407.745  .

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NEED ASAP PLEASEEEEEE

Answers

you’re correct it’s number 3 because it’s the only one without an equal sign

(-2)^-3 how would i do this

Answers

Answer:

[tex]\frac{-1}{8}[/tex]

Step-by-step explanation:

To make the -3 positive, you put the power under 1.

[tex]\frac{1}{(-2)^{3} }[/tex]  This means [tex]\frac{1}{-2}[/tex] x [tex]\frac{1}{-2}[/tex] x [tex]\frac{1}{-2}[/tex] = [tex]\frac{1}{-8}[/tex]  Which means the same as[tex]\frac{-1}{8}[/tex]

You are serving bratwurst and hamburgers at your annual picnic. You want at least three bratwursts or hamburgers for each of your 35 guests. Bratwursts cost $1.3 each and hamburgers $1.2 each. Your budget is $150

Answers

Total cost of bratwursts + Total cost of hamburgers ≤ 150

that is 1.3x + 1.2y ≤ 150

Given,

The total number of guests = 35

Minimum number of bratwursts or hamburgers each one need = 3

The cost of bratwursts = $1.3 each

The cost of hamburgers = $1.2 each

Total budget = $150

We can take number of bratwursts as x and number of hamburgers as y.

Lets check.

Each guest need at least three food items = 35 × 3 = 105

That is, you need more than 105 food items.

So,

x + y ≥ 105

Lets see,

Total cost for bratwursts = 1.3x

Total cost for hamburgers = 1.2y

Now, your total budget is $150. So, the cost of food items must be less than or equal to 150.

That is,

Total cost of bratwursts + Total cost of hamburgers ≤ 150

1.3x + 1.2y ≤ 150

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4
Royce deposits $1200 into a savings account. After nine year, he made $3472.32.
What is the annual simple interest rate of the loan?

Answers

The interest rate needed to make $3,472.32 from simple interest on a principal of $1,200.00 over 9 years is 21.04% per year.

How to determine simple interest rate?

Simple interest is expressed mathematically as;

A = P( 1 + rt )

Where A is accrued amount, P is principal, r is rate and t is the time period.

Given the data in the question;

Principal P = $1200 Accrued amount A = $3472.3Time period t = 9 yearsInterest rate r = ?

Plug the given values into the simple interest formula and solve for r

A = P( 1 + rt )

r = (1/t)(A/P - 1)

r = ( 1/9 )( $3472.3/$1200 - 1)

r = ( 1/9 )( 2.8936 - 1)

r = ( 1/9 )( 1.8936)

r = 0.2104

Convert to percentage

r = 0.2104 × 100%

Rate r = 21.04%

Therefore, the interest rate of the loan is 21.04%.

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what is the slope of y=4.5

Answers

The slope-intercept form is
y
=
m
x
+
b
y
=
m
x
+
b
, where
m
m
is the slope and
b
b
is the y-intercept.
y
=
m
x
+
b
y
=
m
x
+
b
Find the values of
m
m
and
b
b
using the form
y
=
m
x
+
b
y
=
m
x
+
b
.
m
=
0
m
=
0
b
=
4.5
b
=
4.5
The slope of the line is the value of
m
m
, and the y-intercept is the value of
b
b
.
Slope:
0
0
y-intercept:
(
0
,
4.5
)

Answer:

0

Step-by-step explanation:

there is no x so it is 0

0 it is

The perimeter of a kite can be found using the formula P = 2S + 2L. Which
equation expresses S in terms of P and L?

Answers

Answer:

S = ( P - 2L) / 2

Step-by-step explanation:

P = 2S + 2L

P - 2L = 2S

(P - 2L) / 2 = S

Hope this helps :D

9 = 3/4v solve for v simplify your answer as much as possible

Answers

Answer:

v = 12

Step-by-step explanation:

to solve this equation you must first multiply 4 to both sides

9 * 4 = 3/4v * 4

36 = 3v

now divide 3 to both sides

36 / 3 = 3v / 3

12 = v

flip it

v = 12

that is your answer

Mellisa buys 2.5 pounds of salmon and 1.25 pounds of swordfish. She pays a total of $31.25, and the swordfish costs $0.20 per pound less than the salmon l. What would be the combined cost of 1 pound of salmon and 1 pound of swordfish.

Answers

The combined cost of 1 pound of salmon and 1 pound of swordfish is $16.60

Let $x be the cost of 1 pound of salmon.

The swordfish costs $0.20 per pound less than the salmon, then $(x-0.20) is the cost of 1 pound of swordfish.

Melissa buys 2.5 pounds of salmon and pays $2.5x for salmon.

Melissa buys 1.25 pounds of swordfish and pays $1.25(x-0.20) for swordfish.

She pays a total of $31.25, then we get an equation,

2.5x + 1.25(x - 0.20) = 31.25

We solve above equation for x.

2.5x + 1.25x - 0.25 = 31.25

3.75x = 31.50

x = 8.4

So, the cost of 1 pound of salmon is $8.40 and 1 pound of swordfish is $8.20

and combined cost = $8.40 + $8.20

Therefore, the combined cost of 1 pound of salmon and 1 pound of swordfish is $16.60

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2-2 additional practice

Answers

Answer:

0

Step-by-step explanation:

2-2=0

Use the product rule to find the derivative of the following. (Hint: Write the quantity as a product.)k(t) = (t² − 2) ²k' (t) =

Answers

[tex]\begin{gathered} The\text{ product Rule is used to calculate:} \\ \frac{d}{dx}(f(x)*g(x)) \\ =\text{ f'\lparen x\rparen *g\lparen x\rparen + f\lparen x\rparen *g'\lparen x\rparen} \\ In\text{ our case f\lparen x\rparen = g\lparen x\rparen. We therefore need to find} \\ \frac{d}{dx}(t^2-2)(t^2-2) \\ \end{gathered}[/tex][tex]\begin{gathered} f^{\prime}(x)\text{ = g'\lparen x\rparen} \\ =2t \\ Therefore \\ f^{\prime}(x)*g(x)\text{ + f\lparen x\rparen *g'\lparen x\rparen} \\ =\text{ 2t\lparen t}^2-2)\text{ + 2t\lparen t}^2-2) \\ =\text{ 4t\lparen t}^2-2) \end{gathered}[/tex]

Help! What is f(4) for the function F(x) =5x+7?
f(4)=

Answers

Answer:

27

Step-by-step explanation:

f(x) = 5x + 7

f(4) = 5(4) + 7

= 20 + 7

f(4) = 27

Line g has an equation of y = 1/3x - 1. Parallel to line g is line h, which passes throush the point (10, 2). What is the equation of line h?

Answers

The equation reads: y = 1/3x - 4/3.

Describe Line.

The points that make up a line can be extended endlessly in opposite directions. Two points along the same line are referred to as collinear points.

The slopes are the same if two lines are parallel to one another.

Consequently, line h's slope would be equal to line g's 1/3.

All that is left to do is plug the points into the formula to determine the y-intercept.

2 = 1/3(10) + b

2 = 10/3 + b

2 - 10/3 = b

2-10/3 = b

-4/3 = b

Hence, the equation for h is y = 1/3x - 4/3.

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please simplify this:(5x^4)^3

Answers

[tex](5x^{4} )^{3} \\=5x^{4*3} \\=5x^{12}[/tex]

I used the law of exponents as indicated below:

[tex](x^{n} )^{m} \\=x^{n*m} \\=x^{nm}[/tex]


Find k such that f(x) = x^4+ kx³ + 2 has the factor x + 1.

Answers

K = 1 is the value when x = - 1 is Factor of equation .

Why do we use the term factors?

A factor is a number that completely divides another number. In other words, if multiplying two whole numbers results in a product, the numbers we are multiplying are factors of the product since the product is divisible by them. Factors can be found using either division or multiplication.As an illustration, 3 and 6 are factors of 12 because 12 3 = 4 and 12 6 = 2, respectively. 1, 2, 4, and 12 are the other components that make up 12.

f(x) = x^4+ kx³ + 2

x + 1 = 0

x = -1 put in equation

(-1)⁴ + k( -1)³ + 2 = 0

1 - k + 2 =0

k = 1

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Pls help 50 points

You have already traveled 30 miles east and then 30 miles north. To get back to the start, you travel 30 miles west in 1 hour and then 30 miles south in a half hour. What are your average speed and average velocity for the whole rally? Explain your answer.

Will report if answer is not related to question

Answers

Using it's concepts, the average speed and the average velocity are given as follows:

Average speed: 40 miles per hour.Average velocity: 0 miles per hour.

Average speed

The average speed is given by the quotient between the total distance traveled and the time taken, that is:

Average speed = total distance/time

In this problem, the total distance is of 60 miles(30 miles west + 30 miles south), in a time of 1.5 hours(1 hour west and 0.5 hours south), hence the average speed is given as follows:

Average speed = 60/1.5 = 40 miles per hour.

Average velocity

The average velocity is given by the quotient between the displacement and the time taken, that is:

Average velocity = displacement/time

The displacement is the difference between the final position and the initial position. Since the person got back to the start, finish = start, hence the displacement is of zero, as is the average velocity.

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PLease help me with this!!

Answers

The linear equation is:

y = -6*x + 59

The slope is -6, and means that each hour the distance decreases by 6 miles.

The y-intercept is 59, and it is the initial distance to the waterfall.

How to get the linear equation?

A general linear equation in the slope-intercept form is:

y = a*x + b

Where a is the slope (also called the rate of change) and b is the y-intercept.

We know that if the line passes through two points (x₁, y₁) and (x₂, y₂) then the slope is:

a = (y₂ - y₁)/(x₂ - x₁).

Here we can define the variables:

y = distance

x = hours.

Then we have two points (8, 11) and (9, 5).

So the slope is:

a = (5 - 11)/(9 - 8) = -6

This means that the distance to the waterfall decreases by 6 miles each hour.

Then the linear equation is like:

y = -6*x + b

To find the value of b we can use any of the given points, I will use (9, 5), this means that:

5 = -6*9 + b

5 = -54 + b

54 + 5 = b

59  = b

This is the y-intercept, and gives the initial distance to the waterfall.

The equation is:

y = -6*x + 59

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MATH 100 points if you do this

Answers

Answer:

300% increase

Answer:

Increase

200%

Step-by-step explanation:

Since I can't figure out how to input my work in my answer as equations, I will attach my work from a screenshot!

Hope this helps! Have an amazing rest of your day! Please consider awarding me brainliest! ;)

through(−1,−5),slope=9

Answers

Answer:

y = 9x+4

Step-by-step explanation:

Using the slope-intercept formula

y = mx+b  where m is the slope and b is the y-intercept

y = 9x+b   since we are given the slope is 9

Using the point is (-1,-5)

-5 = 9(-1) +b

-5 =-9 +b

Solving for b

-5+9 =b

4 = b

y = 9x+4

I NEED ANSWER REALLY FAST IN GEOMETRY 40 POINTS

The diagram shows a certain construction technique. If
mABF = x + 10x - 1, mCBF = 12x + 7,
what is mLCBF?

Answers

m∠CBF = 55°

If f bisects angle ABC, then mABF and mCBF should be equal to one another. This means we can set up an equation:
x + 10x -1 = 12x +7

Now evaluate for x, and we get
x = -2, x = 4. Plugging in each value to the original equation, we find it cannot be -2 since angles are positive values. This leaves x = 4.
mCBF = 12(4) + 7 = 55.

Here is a photo of my work, it is hard to type it out on my phone:

………………………………………………….

Answers

Answer:

i don't know if this is fully correct but I believe that the answer is both because both elements are used it this piece of art. one the art is in color. two it uses both horizontal and vertical lines.

Level C
Mia, Jake, Carol, Barbara, Ford and Jeff are all going to a costume party. Figure
out what costume each person is wearing and when they arrived at the party.

•The person that arrived fourth was wearing a bathing suit.

•Barbara was the last to arrive.

•Jake and Mia arrived and stayed together.

● The first person was dressed as a French maid.

• Superman arrived right before Barbara.

•The potato heads were always together at the party.

•Ford was a surfer dude.

• The French maid was not Carol.

• The vampire arrived after Superman.

Answers

Using logical reasoning, we can conclude that the costumes of 6 friends are:

Barbara ⇒ VampireJake and Mia ⇒ Potato headsFord ⇒ Surfer guyFrench maid ⇒ JeffCarol ⇒ Superman

What is logical reasoning?Deductive (Logical) Reasoning. Using a collection of facts or data to infer further facts is known as logical or deductive reasoning. It entails using premises to support certain conclusions.Any problem can be objectively studied through the use of reasoning skills, which aids in coming to a logical conclusion about how to continue. For instance, let's say you have an issue at work, and you need to solve it. You use the information at hand and your capacity for logical reasoning.

So, We know:

Barbara ⇒ Vampire ⇒ Last to arrive ⇒ After SupermanJake and Mia ⇒ Arrived and stayed together ⇒ Potato headsFord ⇒ Surfer guyFrench maid ⇒ 1st person ⇒ Not CarolCarol is left to be ⇒ Superman

So, the conclusions can be:

Barbara ⇒ VampireJake and Mia ⇒ Potato headsFord ⇒ Surfer guyFrench maid ⇒ JeffCarol ⇒ Superman

Therefore, using logical reasoning, we can conclude the costumes of 6 friends are:

Barbara ⇒ VampireJake and Mia ⇒ Potato headsFord ⇒ Surfer guyFrench maid ⇒ JeffCarol ⇒ Superman

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Convert the standard form equation into slope-intercept form. 5x - 4y = -20​

Answers

Answer: y=5/4x+5 is the equation in slope-intercept form.

Using the Pythagorean Theorem find the missing length and then round the result to the nearest tenth.

a = 7, b = 4, c =

Answers

Answer:11

Step-by-step explanation: because 7+4=11

Consider the following word problem: Twenty more than four times a number is equal to the difference between 2 and twice the number. Find the number.

Answers

Given:

The objective is to find the number.

Explanation:

Consider the unknown number as x,

First, four times the number can be written as 4x.

Twenty more than 4 time the number will be,

[tex]4x+20\ldots\ldots.\text{ (1)}[/tex]

Then, twice the number can be represented as 2x.

And the difference between 2 and twice the number will be,

[tex]2-2x\ldots\ldots..(2)[/tex]

Now, equate both the equations (1) and (2).

[tex]\begin{gathered} 4x+20=2-2x \\ 4x+2x=2-20 \\ 6x=-18 \\ x=\frac{-18}{6} \\ x=-3 \end{gathered}[/tex]

Hence, the unknown number is -3.

Expand and simplify (x -6)(x + 2)

Answers

Answer: X^2 - 4x -12

1. Distribute :

(x−6)(x+2)

x(x+2)-6(x+2)

2. Distribute:

x(x+20-6(x+2)

X^2 +2x-6(x+2)

3. Distribute:

X^2+2x-6(x+2)

X^2+2x-6x-12

4. Combine like terms:

x^2+2x-6x-12

solution:X^2-4x-12

Solve 32 ≤ −5z − 32.

Answers

The solution to the given linear equation is equivalent to z≥ -12.8

Solving linear equation

Linear equations are equations that has a linear degree of 1. Given the following linear equation below:

32 ≤ −5z − 32

Add 32 to both sides

32 + 32 ≤ −5z − 32 + 32

64  ≤ −5z

Swap

-5z ≥ 64

Divide both sides by -5.

-5z/-5 ≥ 64/-5

z≥ 64/-5

z≥ -12.8

This gives the equivalent linear equation.

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Answer: Its c not d he kinda had it right but no

Step-by-step explanation:

A car has 6 gallons of gasoline remaining in the tank. This is 60% of the total amount of gasoline the tank will hold. How many gallons of gasoline does the car’s tank hold?

Answers

the car's tank hold 10 gallons of gasoline.

Step-by-step explanation:

if 6 is 60% of total amount of gasoline so what is the 100% of the gasoline so when we solve the 100% of the gasoline will be 10.

solve: ? 100%

6 60%

it first we write the thing that we want to find

Yes 10 gallons of gasoline, and I need answers for my question and my bad
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