When a window is open, the temperature in a room falls 5°F every 15 minutes. Before the window is opened, the temperature was ​ 70°F ​ . Pls Help Me! Will mark Brainliest

Use the Ray tool to make a graph that shows the temperature of the room, T, after the window has been open for m minutes.

Dimension of rectangular parking lot is width = 112.882 feet and length = 132.882 feet

Given that  

Area of rectangular parking lot = 15000 square feet

Length is 20 feet more than the width.

Need to find the dimensions of rectangular parking lot.

Let assume width of the rectangular parking lot in feet be represented by variable "x"

As Length is 20 feet more than the width,

so length of rectangular parking plot = 20 + width of the rectangular parking plot

=> length of rectangular parking plot = 20 + x = x + 20

The area of rectangle is given as:

[tex]\text {Area of rectangle }=length \times width[/tex]

Area of rectangular parking lot = length of rectangular parking plot [tex]\times[/tex] width of the rectangular parking

[tex]\begin{array}{l}{=(x+20) \times (x)} \\\\ {\Rightarrow \text { Area of rectangular parking lot }=x^{2}+20 x}\end{array}[/tex]

But it is given that Area of rectangular parking lot = 15000 square feet

[tex]\begin{array}{l}{=>x^{2}+20 x=15000} \\\\ {=>x^{2}+20 x-15000=0}\end{array}[/tex]

Solving the above quadratic equation using quadratic formula

General form of quadratic equation is  

[tex]{ax^{2}+\mathrm{b} x+\mathrm{c}=0[/tex]

And quadratic formula for getting roots of quadratic equation is

[tex]x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}[/tex]

In our case b = 20, a = 1 and c = -15000

Calculating roots of the equation we get

[tex]\begin{array}{l}{x=\frac{-(20) \pm \sqrt{(20)^{2}-4(1)(-15000)}}{2 \times 1}} \\\\ {x=\frac{-(20) \pm \sqrt{400+60000}}{2 \times 1}} \\\\ {x=\frac{-(20) \pm \sqrt{60400}}{2}} \\\\ {x=\frac{-(20) \pm 245.764}{2 \times 1}}\end{array}[/tex]

[tex]\begin{array}{l}{=>x=\frac{-(20)+245.764}{2 \times 1} \text { or } x=\frac{-(20)-245.764}{2 \times 1}} \\\\ {=>x=\frac{225.764}{2} \text { or } x=\frac{-265.764}{2}} \\\\ {=>x=112.882 \text { or } x=-132.882}\end{array}[/tex]

As variable x represents width of the rectangular parking lot, it cannot be negative.

=> Width of the rectangular parking lot "x" = 112.882 feet  

=> Length of the rectangular parking lot = x + 20 = 112.882 + 20 = 132.882

Hence can conclude that dimension of rectangular parking lot is width = 112.882 feet and length = 132.882 feet.

Answer:

D

Step-by-step explanation:

6 - x = -12

subtract 6 from each side

6 - 6 - x = -12 - 6

-x = -18

divide each side by -1

-x / -1 = -18 / -1

x = 18

Answer:

The answer is D.) 18

Step-by-step explanation:

Subtract 6 from both sides. Divide both sides by −1. The answer is 18.

Answer:

3/4

Step-by-step explanation:

1 / (1/3) = 3

1/4 * 3 = 3/4

Answer:

r=6

Step-by-step explanation:

4r+7=31

4r=31-7

4r=24

r=24/4

r=6

Answer:

Step-by-step explanation:

Yes

First you add 7 to both sides b/c the 7 would be negative. Then your left with 6x=18. Then you divide both sides by 6 and get 3

Answer:

Yes 3 is a solution.

Step-by-step explanation:

6(3) - 7 = 11 6 times three equals 18 so then 18 minus 7 equals 11 so yes.

Answer:

See image below.

I'm not 100% sure if this is allowed or not, someone please let me know if it is not.

Step-by-step explanation:

See image below

Answer:

± 11[tex]\sqrt{3}[/tex]

Step-by-step explanation:

Given

x² + 11² = 22², that is

x² + 121 = 484 ( subtract 121 from both sides )

x² = 363 ( take the square root of both sides )

x = ± [tex]\sqrt{363}[/tex] = ± [tex]\sqrt{121(3)}[/tex] = ± 11[tex]\sqrt{3}[/tex]

Answer:

The amount of time it takes to ride 26 miles is 2.89 hours.

Step-by-step explanation:

Given : You ride your bike at 9 miles per hour.

To find : How long it will take you to ride 26 miles ?

Solution :

The equation given is [tex]9\times t=26[/tex]

Using distance formula,

[tex]\text{Distance}=\text{Speed}\times \text{Time}[/tex]

According to formula t represent the time taken to cover the distance.

Your speed in miles per hour is 9 miles per hour.

The number of miles you've traveled so far is 26 miles.

Solving the equation,

[tex]9\times t=26[/tex]

[tex]t=\frac{26}{9}[/tex]

[tex]t=2.89[/tex] hours

The amount of time it takes to ride 26 miles is 2.89 hours.

Answer:

Odds in against the team winning is 5 : 3

Step-by-step explanation:

Consider the provided information.

The odds against is the ratio of how many ways an outcome can't take place compared to how many ways it can take place.

Here the probability of winning its next match is 3/8.

That means total number of outcomes are 8.

Favorable outcomes are 3.

Therefore, the unfavorable outcomes are 8-3=5.

We need to find the odds against the team winning its next match.

Therefore, odds in against the team winning is 5 : 3

The probability of odds against the team winning is [tex]\frac{5}{8}[/tex]

To find the odds against the rugby team winning, subtract the probability of winning from 1 to get the probability of not winning and form a ratio of these probabilities, resulting in odds of 5:3 against the team winning.

The student is asking about the calculation of odds against a rugby team winning its next match given a certain probability of winning. First, we need to understand the probability of the team not winning (losing or drawing) because the odds against the team winning would be the ratio of it losing to it winning. Since the probability of winning is given as 3/8, the probability of not winning is 1 - 3/8 = 5/8. The odds against the team winning are therefore expressed as the ratio of the probability of not winning to the probability of winning, which is 5/8 to 3/8, or simply 5:3 when converted into odds format.

https://brainly.com/question/31742431

#SPJ3

The first plant produces 5x + 26 more items daily than the second​ plant

Given that , A company has two manufacturing plants  

The daily production levels of one company is 7x + 19 items  

And daily production levels of another company is 2 x - 7 items

To find the number of items first plant produce more than the second plant, wed need to subtract the number of items produced by second plant from the the number of items produced by first plant.

Extra items produced by 1st plant = daily production of 1st plant - daily production of 2nd plant

Extra items produced count = 7x + 19 – (2x – 7)

= 7x + 19 – 2x + 7  

= 7x – 2x + 19 + 7 = 5x + 26  

Hence, the 1st plant produces 5x + 26 items more than 2nd plant

Answer:

Yes, because 4 + 4 = 8 so it is the same as 7 × 8.

Answer:

Yes.

Step-by-step explanation:

This is because if using PEMDAS, you will see that (4+4) = 8.

That would mean that 7x(4+4) =7x8, and that Paulo is correct.

Answer:

[tex]14\ \frac{miles}{gallon}[/tex]

Step-by-step explanation:

we know that

To find out the unit rate (number of miles per gallon of gasoline) divide the total miles driven by the total gallons of gasoline used

so

[tex]\frac{278.2}{19.6}\ \frac{miles}{gallons}=14.19\ \frac{miles}{gallon}[/tex]

Round to the nearest WHOLE amount of miles

[tex]14.19\ \frac{miles}{gallon}=14\ \frac{miles}{gallon}[/tex]

Answer:

jessie is better

Step-by-step explanation:

45/3=15

$15 per hour

90/5=18

$18 per hour

Answer:

the correct answer is jessie charges jim the better price

Step-by-step explanation:

Answer:

[tex]\large\boxed{(-xy^4b^2)^4=x^4y^{16}b^8}[/tex]

Step-by-step explanation:

[tex](-xy^4b^2)^4\qquad\text{use}\ (ab)^n=a^nb^n\ \text{and}\ (a^n)^m=a^{nm}\\\\=(-1)^4(x)^4(y^4)^4(b^2)^4=1x^4y^{(4)(4)}b^{(2)(4)}=x^4y^{16}b^8[/tex]

[tex](-xy^{4} b^{2} )^{4}[/tex] can be written as  x⁴y¹⁶b⁸.

Procedures must be made simpler in order to attain uniformity in efforts, expenses, and time. Variety and variation that is unnecessary, damaging, and unproductive are eliminated.

Given an equation  [tex](-xy^{4} b^{2} )^{4}[/tex]  in this, we need to find a monomial in standard form which can be optimized after putting the power back at every variable. hence,

[tex](-xy^{4} b^{2} )^{4}[/tex]  =  (-x)⁴(y⁴)⁴ (b²)⁴

=   x⁴y¹⁶b⁸

Therefore,  a monomial in the standard form  [tex](-xy^{4} b^{2} )^{4}[/tex] is   x⁴y¹⁶b⁸.

Learn more about simplification here:

https://brainly.com/question/20346783

#SPJ3

Answer:

I believe the answer is false because there is no facts that say true.

Answer:

believe the answer is false because there is no facts that say true.

Step-by-step explanation:

Answer: 1 hour

Step-by-step explanation:

2 gallons in, 3 gallons out per minute

means 1 gallon lost per minute

60 gallons in the tank so it will take 60 minutes to drain it completely

answer=1hr

Answer:Include

Step-by-step explanation:

Multiply add and subtract the top. I can include the rest if you want

Answer:

The required number is 8.

Step-by-step explanation:

Given : If [tex]\frac{1}{2}[/tex] is subtracted from four times the reciprocal of a number, the result is 0.

To Find : The number ?

Solution :

Let the number be x.

The reciprocal of number is [tex]\frac{1}{x}[/tex]

[tex]\frac{1}{2}[/tex] is subtracted from four times the reciprocal of a number, the result is 0.

The equation will become,

[tex]4\times \frac{1}{x} - \frac{1}{2}=0[/tex]

Solving the equation we get,

[tex]\frac{4}{x} -\frac{1}{2}=0[/tex]

[tex]\frac{4}{x} = \frac{1}{2}[/tex]

[tex]x= 4\times 2[/tex]

[tex]x=8[/tex]

Therefore, the required number is 8.

Answer:mark is 7. Mike is 4

Step-by-step explanation:x+y=11. Y=2x-10 thus substituting for y in equation1 we have x+2x-10=11. 3x-10=11. 3x=11+10. 3x=21. X=21/3. X=7. Mike =(2×7)-10=14-10=4

Step-by-step explanation:

Mark's age is x

so Mike's age is

[tex]2x - 10[/tex]

and we know that the sum of their ages is eleven so:

2x+x- 10 = 11

3x-10=11/+10

3x=21/÷3

x=7

Mark is 7 years old and

Mike is 4 years old.

Answer:

f(x)=38x+b

Linear Equation

Step-by-step explanation:

So I used slope intercept form it 38 per bicycle and plus the costs of running but we don't know the cost so it's shown as b, the reason I did not use Exponential because from reading the word problem it's not going to grow rapidly.

Live Fund receive [tex]\bold{\$2500 N}[/tex] it they sold half thier holding in Marks Brothers.

Solution:

Given: Sale price of Live Fund holding is 5000 dollar

To find: Amount that Live Fund will get if they sell half of their holding in Marks Brothers.

Assume the total holdings held by Live Fund in Marks Brothers as N

Therfore, half the number of shares or (half the holdings) of Live Fund will be [tex]\frac{N}{2}[/tex].

Thus, if each share is valued at [tex]\$5000[/tex], then the total value of the number of shares sold will be as follows,

[tex]\Rightarrow5000\times\frac{N}{2}\text{ dollars }\rightarrow\frac{5000\times N}{2}\text{ dollars }[/tex]

[tex]\Rightarrow2500 N\text{ dollars }[/tex]

Hence, Live Fund will receive [tex]\$2500 N[/tex]

Answer:

Hope it helps :)

Step-by-step explanation:

Detailed answer in the attached file

Answer:

x=26/5

Step-by-step explanation:

first you would multiply both sides by 2

then you woud end up with 6x- 14 = x+12

then combine like terms subtract x on both sides

5x=26 then divide both sides by 5

x=26/5

Answer:

Total savings  = $63  +  12 ( m)  

: m  = number of driveways shoveled

Step-by-step explanation:

Here, the money earned for each road David shovels = $15

The number of driveway shoveled by David = 12

The total money saved  David has after he is done with his work = $243

Now, The number of money saved by shoving 12 driveways  

= 12 x ( Money earned by shoveling 1 driveway)

= 12 x ( $15) = $ 180

Total savings  = His previous savings  + Money earned from Shovel work

⇒  $243  =   His previous savings + $ 180

⇒ His previous savings = $243  - $180 = $63

Now, we can write his total savings as:

Total savings  = $63  + 12 ( m)  

: m  = number of driveways shoveled

Answer:

120 i think i don't know

Step-by-step explanation:

Answer:

Step-by-step explanation:

The scatter plot is attached. There you can match the value assigned to $350,000.

Using a red line, we find that the answer is between 115 and 125, closer 125 than 115.

So, if you look all choices, there are two possibilities, C and D. However, $115 million can't be the right answer because our graphic approximation is closer to 125.

Therefore, the right answer is D) $120 million.

If the company were to spend $350,000 on advertising, the predicted sales would be $120 million.

Answer:

Step-by-step explanation:

no

(x +a)² + (y + b)² = r²

Since, a=0 and b=0, r=5, we get x²+ y²= 5².

So, x²+y² = 25

Let's try all of the possible answer choices.

Any result that is even, we cross off the list. Otherwise we have our answer.

If c = -8, then c-8 = -8-8 = -16 which is even. Cross this off the list

If c = 0, then c-8 = 0-8 = -8, which is even. Cross this off the list.

If c = -5, then c-8 = -5-8 = -13, which is odd. We have our answer

If c = 10, then c-8 = 10-8 = 2, which is even. Cross this off the list

=============================================

Answer:

(b) y=-3/4x-8

Step-by-step explanation:

The graph that will be perpendicular to the graph 4x - 3y = -12

If this equation is represented in form of the straight line equation y = mx + b

it will change to 3y = 4x + 12

therefore y = (4/3)x + (12/3)

y = (4/3)x + 4

which implies that m = 4/3 while b = 4

However for the line that will be perpendicular to the graph, its slope m1 must be negative inverse of the slope of the initial graph

This is because m x m1 = -1

therefore m1 = -1/m

this implies that the correct answer must have a slope of -1/(4/3) = -3/4

The correct answer can then be analysed by expressing all options with y = mx + b

(a) In form of y = m1x + b, 4x+3y=12 becomes y = -4/3x + 4 (m1 = -4/3: wrong)

(b) In form of y = m1x + b, y=-3/4x-8 has m1 = -3/4 (correct)

(c) In form of y = m1x + b, y=3/4x+1 has m1 = 3/4 (wrong)

(d) In form of y = m1x + b, 3x-4y=1 becomes y = 3/4x - 1/4 (m1 = 3/4: wrong)

This is a cool one. Sequence 1 will approach negative infinity and Sequence 2 will approach 0 but never get to it!

Sequence 1 is an arithmetic sequence with a common difference of -16. Sequence 2 is a geometric sequence with a common ratio of 1/2.

Sequence 1 is an arithmetic sequence with a common difference of -16. Starting with 32, each term is obtained by subtracting 16 from the previous term. Sequence 2 is a geometric sequence with a common ratio of 1/2. Starting with 32, each term is obtained by multiplying the previous term by 1/2.

Sequence 1: 32, 16, 0, -16, ...
Sequence 2: 32, 16, 8, 4, ...

Statement 1: Sequence 1 is an arithmetic sequence. True.
Statement 2: Sequence 2 is a geometric sequence. True.
Statement 3: The common difference in Sequence 1 is 8. False. The common difference is -16.
Statement 4: The common ratio in Sequence 2 is 1/2. True.
Statement 5: The next term in Sequence 1 is -32. True. The next term is obtained by subtracting 16 from -16.
Statement 6: The next term in Sequence 2 is 2. True. The next term is obtained by multiplying 4 by 1/2.

https://brainly.com/question/30262438

#SPJ12

Answer:

X-Intercept: (1.2,0)

Y-Intercept (0,.75)

Step-by-step explanation:

If you want fraction form then the

X-Intercept: (6/5,0)

Y-Intercept (0,3/4)

To find the x intercepts, you have to plug y=0 into the equation. After you plug in y=0, you get the equation 5x-9=-3 and once you solve that, you find that the x intercept = 1.2

Likewise, to find the y intercepts, you would plug x=0 into the equation. Once you do that, you get the equation -9=-8y-3 and when you solve for y you get an intercept of 3/4

Please Mark Brainliest ;)