Mathematics High School

Montana is known for having very chilly winters. One night, the temperature was falling by 2 degrees Fahrenheit each hour. At sunset, the temperature was -5 degrees Fahrenheit. How many hours will it take for the temperature to reach -19° F?​

Answers

Answer 1

Answer:

7 hours

Step-by-step explanation:

We are given that

At sunset, the temperature=-5 degrees Fahrenheit

Each hour, temperature falling=2degrees Fahrenheit

We have to find time taken to reach the temperature -19° F.

Let x be the time time taken to reach the temperature -19° F

According to question

[tex]-5+x(-2)=-19[/tex]

Where we taking 2 negative because temperature decreases.

[tex]-5-2x=-19[/tex]

[tex]-5+19=2x[/tex]

[tex]14=2x[/tex]

[tex]x=\frac{14}{2}[/tex]

[tex]x=7[/tex]

Hence, it will take 7 hours for the  temperature to reach -19° F.

Related Questions

A
B
C
D
? I need help

Answers

Answer:

what the question

Step-by-step explanation:

what are am insupposed to be doing here

On a coordinate plane, how are the locations of the points (7 , -9) and (-7 , 9) related?

Answers

Answer:

11 units.

They both are on the x axis of 9. The distance between -7 and 4 is 11 units, therefore that is why the answer is 11.

Step-by-step explanation:

They are reflected over the x axis.

A pizza shop offers a special on a -topping pizza from a list of three items. The chart below shows all possible pizza combinations.

Answers

Answer:

35 different combinations

Step-by-step explanation:

Pizza company offers 3 different crust types to choose from and there are 7 toppings available which a person can choose to add in its pizza. The number combination made from 7 different types of toppings are 35. This is calculated using combination technique of statistics. It is assumed that the order of topping and crust does not matter.

nCr = 7C3

7C3 = 35.

124 students played a sport in the fall, and 76 students played a sport in the spring. What was the percent decrease of the students who played sports in the spring? Round your answer to the nearest tenth of a percent.

Answers

Answer:

5.7%

Step-by-step explanation:

subtract 124-76.

then, you would divide 76 by 124 to get a weird number so multiply that by 100 to get this.

5.64516129.

then rounding to the nearest tenth would be 5.7.

so i think it would be 5.7%.

help pleasee! i have to turn this in soon

Answers

b 35 is the answer sorry if I'm worng

how do you graph x+ 4

Answers

Explanation ..............
I hope this helps you out

1. Чx -2 = 2x
what is x?

Answers

X=1 hope that helps all you need to do is subtract 4x on both sides then divide 2 by 4 and you get -2 then do -2 divided by -2 and you get 1 for X

X + 9= -2
its algebra and im not quite sure about it because i dont pay attention in math class and the graph makes no sense

Answers

Ok so I know the answere it is -11

Round 3,640 to the nearest thousand.

Answers

Answer:

4,000

Step-by-step explanation:

Answer:

4000

Step-by-step explanation:

simplify the following expression

[tex]( {5}^{3} ) {}^{5} [/tex]
​

Answers

Answer:

[tex]5^{15}[/tex]

Step-by-step explanation:

[tex](a^{m})^{n}=a^{m*n}\\\\(5^{3})^{5}=5^{3*5} = 5^{15}[/tex]

Karl invests $35,000 for 8 years in an account paying 7% compounded daily. Find
the annual percentage yield (APY) to the nearest hundredth of a percent. *
a.9.38%
b.12.72%
c.10.14%
d.11.36%

Answers

Answer:

principal (p)=$35000

time(t)=8years

rate ( r)=7%

Step-by-step explanation:

compounded amount(c.a)=p((1+r/100)^t )=$35000((1+7/100)^8)=$60136.5compound interest gain=$60136.5-$35000=$25136.5Karl gain interest in 1 year=$35000((1+7/100)-1)=$2450gain % in 1 year=$2450/$25136.5×100%=9.74%

PLEASE HELP I'M BEING TIMED!!
Yuri triples a number, x, to get a number, y. Which is the graph of Yuri's function?

First One will get Brainliest!!

Answers

Answer:

It will be A

Step-by-step explanation:

Hope this helped you out

answerrrrrrrrr
D.
y=3x

Nathaniel is going to invest $76,000 and leave it in an account for 18 years. Assuming the interest is compounded continuously, what interest rate, to the nearest tenth of a percent, would be required in order for Nathaniel to end up with $100,000?​

Answers

Answer:

did you ever get the answer bc I have this and need help pls and thank you

Step-by-step explanation:

Answer:

Step-by-step explanation:

1.5%

A young sumo wrestler decided to go on a special diet to gain weight rapidly. He gained weight at a constant rate.

The table compares the wrestler's weight (in kilograms) and the time since he started his diet (in months).

How fast did the wrestler gain weight?

___ kilograms per month​

Answers

Finding the rate of the weight gain, we divide the total weight gained with the total number of months that took to gain that weight.

Total time (months) = 0.5 + 2 + 3.5 = 6 months

Total weight (kg) = 80.6 + 88.4 + 96.2 = 265.2 kilograms

Rate = Kg ÷ Months

Rate = 265.2 ÷ 6 = 44.2

44.2 kilograms per month​

Cheers!

Answer:

78 kilograms

Step-by-step explanation:

khan told me

What is this ? x<-2 .....HELP please ! ( sorry if the picture is blurry)

Answers

Answer:

A)  x < -3

Step-by-step explanation:

Give an example of a proportion that uses the numbers 2, 3, 4 and 6.

Answers

Give an example of a proportion that uses the numbers 2, 3, 4 and 6.

2:3 is the same as 4:6

Proportion says that two ratios (or fractions) are equal.

Given a term in an arithmetic sequence and
the common difference find the 100th term.


a14= 102
d = 10


Please help, i’m struggling.

Answers

Answer:

100th term = 962

Step-by-step explanation:

You need  to find the first term of the sequence

The formula to use is

[tex]a_{n} = a_{1} + (n - 1)d[/tex]    In your problem, n = 14.  So,

[tex]102 = a_{1} + (14 - 1)10\\102 = a_{1} + 130\\a_{1} = -28\\\\[/tex]

Now you can find the 100th term.  n = 100, first term = -28 and d = 10

[tex]a_{100} = -28 + (100 - 1)10\\ = -28 + 990\\ = 962[/tex]

100th term = 962

-7x – 2y = 14
6х + бу = 18

Answers

Answer:

es 8 ksnfjskausksufbab 726+47272774

Answer:

(x. y) =(4, 7)

Step-by-step explanation:

-7 x - 2 y = 14

6 x + 6 y = 18

Solve the equation

x = - 2/7 y

6 x + 6 y = 18

Substitute the value of x

6 ( - 2 - 2/7y) + 6 y = 18

Solve the equation

y = 7

Substitute the value of y

x = - 2 - 2/7 x 7

Solve the equation

x = - 4

A possible solution is

(x, y) = (- 4, 7)

Check the solution

- 7 x ( - 4) - 2 x 7 = 14

6 x ( - 4) + 6 x 7 = 18

Simplify

14 = 14

18 = 18

The ordered pair is the solution

(x, y) = ( - 4, 7)

Boom!

factor 42z+68.

simplify and factor 3(x - 2) + 9(x + 1) + 5(1 + 2x) + 2(3x - 4)

Answers

Step-by-step explanation:

step 1. so - this is 2 questions?

step 2. 42z + 68 = 2(21z + 34)

step 3. next -> 3x - 6 + 9x + 9 + 5 + 10x + 6x - 8

step 4. 28x + 0

can somebody help with this no fake answers please im kinda low

In a survey of the students in a class, it was found that 9 students worked during summer holidays. If this represents 25% of the class, how many students are there in the class?

Answers

Step-by-step explanation:

let the total students be x then

25/100x=9

x=9×100/25

x=9×4

x=36

so total students are 36

Find the x-intercept and y-intercept of the line 4x - 3y= -12.

Answers

Answer:

x=3/4y+13  y=4/3x-4

Step-by-step explanation:

This -1/5(10t-15)and -2t+3 Equivalent???? help please 5 rate??

Answers

Yes, I believe they are equivalent because if you were to solve -1/4(10t-15) it would equal -2t+3

Which is the proportion for the ratio 3/6
15/18
3/12
9/18

Answers

9/18 bc 3/6=0.5 and so is 9/18=0.5

who ever answers this first gets brainly

Answers

Answer: A

im sure

Step-by-step explanation:

Answer:

The answer is D

Step-by-step explanation:

C = πd

hope this helps xx

Find the value of g(4) for the function below:
g(x) = x² – 2x + 5
O 5
O 13
O 19
O 25

Answers

Answer:

O 13

Step-by-step explanation:

g(4) is asking for the function of g when x = 4

g(4) = (4)^2 - 2(4) + 5

g(4) = 16 - 8 + 5

g(4) = 13

Triangle A B C is shifted to the left to form triangle A prime B prime C prime. Triangle A prime B prime C prime is then dilated to form larger triangle A double-prime B double-prime C prime.
Determine the similarity transformations that verify △ABC ~ △A''B''C'.

The first transformation mapping △ABC to △A'B'C' is a
.

The second transformation mapping △A'B'C' to △A''B''C' is a

Answers

Answer:

its d and c

Step-by-step explanation:

Answer:

translation left,

dialation with center C

Step-by-step explanation:

Miss Johnson gave her class the following equation 8x - 20=15 + x solve the equation to show their work has been in.christina and Jamar solve the equation 2 different ways and debate about which person was correct.who solved the equation correctly?
a.CHRISTINA
B.JAMAR
C.BOTH
why do you think you are correct in your choosing support your answer with details​

Answers

Answer:

Both solved it correctly

Step-by-step explanation:

The preimeter of the rectangle is 154 feet.The length of the rectangle is 55 feet.What is the width of the rectangle.

Answers

Answer:

22

Step-by-step explanation:

The preimeter is adding all sides together. I took 154-55 twice sense we have four sides of a rectangle and two are lengths. after that i got 44. I then just remembered we had two sides left so divided that by 2 and got 22

it took katie4 hours to knit 9 scarves how many scarves could you make in 24 hours ​

Answers

Answer:

54 scarves

Step-by-step explanation:

4 hours-9 scarves

8 hours-18 scarves

12hours -27 scarves

16 hours-36 scarves

20 hours-45 scarves

24 hours-54 scarves

pattern: h+4 (hours)  s+9 (scarves)

simplify the expression and combine like terms. 4 (z - 2) + 2 (z - 1)

Answers

4 (z - 2) + 2 (z -1)
(4)^(z)+(4)(-2)+(2)^(z)
= 4z+-8+2z+-2
= -4z+-8+2z+-2
=(4z+2z)+(-8+-2)
= 6z+-10
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