9514 1404 393
Answer:
D. -2.09 degrees per minute
Step-by-step explanation:
The average rate of change is the change in temperature divided by the change in time:
m = (T(30) -T(10))/(30 -10)
= ((15 +155 e^(-30·0.02)) -(15 +155 e^(-10·0.02))/20
= (155/20)(e^-0.6 -e^-0.2) ≈ -2.09 . . . degrees per minute
Can someone help me !!!
Answer:look close because that is the question
Step-by-step explanation:
Solve the equation (5x3)(5x4)=55
pretty please i need it asap
Answer:
5x3 is 15 and 5x4 is 20. 15x 20 is 300…. Soo..
Step-by-step explanation:
The charges for an international call made using the calling card for two phone companies are shown in the table. a. What is the length of a phone call that would cost the same no matter which company is used? b. Analyze Relationships When is it better to use the card from Company B?
Phone Company Charges
Company A 35¢ plus 3¢ per minute
Company B 45¢ plus 2¢ per minute
Answer: 10 minutes
Step-by-step explanation:
Let x be minutes.
Toatl costs for a call are:
A: 35 + 3x
B: 45 + 2x
When will A = B?
35 + 3x = 45 + 2x
1x = 10
They are equal cost at 10 minutes
andre is solving the inequality 14x+3 is less than or equal to 8x+3.he first solves a related equation
14x+3=8x+3 this seems strange to Andre. He thinks he probably
14x=8x made a mistake.What was his mistake?
8=14
Answer:
14x+3=8x+3
14x+3 -3 = 8x+3 -3
Cancels out the 3
14x = 8x
14x - 8x = 8x -8x
Cancels out the 8x
14x = 0
x = 0
Step-by-step explanation:
Andre should have collected the like terms in order to have all the variables x on one side before taking the difference.
Inequality expressionGiven the inequality expression solved by andre expressed as:
14x + 3 ≤ 8x + 3
Simplify to have:
14x - 8x ≤ 3-3
6x ≤ 0
x ≤ 0
Hence andre should have collected the like terms in order to have all the variables x on one side before taking the difference.
Learn more on inequality here: https://brainly.com/question/24372553
at a party 6 out of 8 people what pepperoni pizza what percent of people don’t want pepperoni pizza
Answer:
sorry I don't know the answer to this question
Find the area of a circle with radius 5 ft.
Use the value 3.14 for it, and do not round your answer.
Answer:
A = 78.5 ft^2
Step-by-step explanation:
A = 3.14 x 5^2
= 3.14 x 25
The area is:
78.5 ft²Explanation:
To find the circle's area, use the formula [tex]\sf{A=\pi r^2}[/tex].
where:
A = area;
π = 3.14 (pi);
r = radius
Diagram:
[tex]\setlength{\unitlength}{1cm}\begin{picture}(0,0)\thicklines\qbezier(2.3,0)(2.121,2.121)(0,2.3)\qbezier(-2.3,0)(-2.121,2.121)(0,2.3)\qbezier(-2.3,0)(-2.121,-2.121)(0,-2.3)\qbezier(2.3,0)(2.121,-2.121)(-0,-2.3)\put(0,0){\line(1,0){2.3}}\put(0.5,0.3){\bf\large 5\ ft}\end{picture}[/tex]
Plug in the data:
[tex]\sf{A=3.14\times5^2}[/tex][tex]\sf{A=3.14\times25}[/tex][tex]\bf{A=78.5\:ft^2}[/tex]PLZ HELP. What is the slope of (-5,1) and (-5,7)
Answer:
0
Step-by-step explanation:
the x-value doesn't change
Hello! :)
We can use the slope formula:
[tex]\frac{y2-y1}{x2-x1} \\\frac{1-7}{-5-(-5)} \\\frac{-6}{-5+5} \\\frac{-6}{0} \\[/tex]
The slope is undefined. Here's something you should remember:
If the x-coordinates are the same, then the slope is undefined.Hope it helps! :)
Please ask if you have any query.
~An excited gal
[tex]MagicalNature[/tex] here to help
A rectangle has an area of 140m2.
One of the sides is 10m in length.
Work out the perimeter of the rectangle.
A marathon is a race that is 42.195 kilometers long. Joel ran two marathons this year. How many total kilometers did he run between the two races?
Answer:
42.195 + 42.195 OR 42.195 X 2
= 84.39
Therefore, Joel ran 84.39 km altogether in two races
Hope it helps ;)
Please mark as brainliest!
x=5 and y=7
9y+x= ?
i need help );
Answer:
Step-by-step explanation:
All we need to do is substitute the y and x. This would then look like:
9y + x =
9 × 7 + x =
9 × 7 + 5.
Can you solve it from here?
round 0.9130434 to the nearest hundred
Answer:
0.91
Step-by-step explanation:
Answer:
0.913
Step-by-step explanation:
can someone answer at least some of these?
The owner of a small store buys coats for $40.00 each .she sells the coats for $7200 each. What percent of the purchase price is the sale price? The owner increased the price by the same percent
Answer:
Step-by-step explanation:
0056 because 1% is 72 so you know it’s going to have to be less then 72. So to get your percent you divide 40 by 7200 so 40/7200. This will get you .00555556 which I rounded to .0056
1)Solve 3x+2= 5
A. Model 3 2 x+ = 5.
B. Perform the step to have the variables (circles) alone on one side.
C. Write the resulting step.
D. Divide the variables (circles) and numbers (squares) into equal groups.
E. Show the value of one group.
The value of x in the equation, 3x + 2 = 5 is 1.
In order to solve this equation: 3x + 2 = 5, take the following steps:
Combine similar terms together:
3x = 5 - 2
Add the similar terms together
3x = 3
Divide both sides of the equation by 3 in order to make x the subject f the formula
3x / 3 = 3 /3
x = 1
A similar question was answered here: https://brainly.com/question/11787837
can u guys please help me
Answer:
a. 3.4m
b. 12.2m
Step-by-step explanation:
SOH CAH TOA
[tex]Sin QPS=\frac{Opposite}{hypotenuse}[/tex]
sin 15° = [tex]\frac{QS}{PQ}[/tex]
QS= sin 15° * PQ
QS = 0.2588 * 12.6 = 3.36088 ≈ 3.4m
a. The length of QS = 3.4m
b. [tex]cos QPS=\frac{Adjacent}{Hypotenuse}[/tex]
Cos 15° = [tex]\frac{PS}{PQ}[/tex]
PS = Cos 15° * PQ
PS = O.9659 * 12.6 = 12. 17034 ≈ 12.2m
The length of PS = 12.2m
One batch of pink paint uses `2` cups of red paint and `7` cups of white paint. Mai made a large amount of the same color pink paint using `14` cups of red paint. .
Rahul is 5 years old .his father's age is 31 years after how many years will his father's age be 3 times of his age?
Answer:
8 yrs
Step-by-step explanation:
3(5+x)=31+x
15+3x=31+x
2x=16
x=2
Answer:
8 years.
Step-by-step explanation:
let after x years father's age is 3 times that of Rahul.
31+x=3(5+x)
31+x=15+3x
31-15=3x-x
2x=16
x=16/2=8
Which angles are adjacent to each other? Question is located in the attached file (image)
Answer:
Mark me as Brainliest
Step-by-step explanation:
4 and 3
baking recipe requires an oven of 380 °F. What is the temperature in degree Celsius? With solutions please
55.99 dollars gift with 18% coupon and 7.25% sales tax. What is the final cost?
Answer:
I think it is $91.89.
Step-by-step explanation:
1. Take the number and add sales tax by multiplying 0.0725 ( since that is what the percentage is in a decimal form). Then add that to the original and you have what it would be plus sales tax: $60.05.
2. Then you would need to multiply by 0.18. You would get 10.809
3. Next, subtract the 10.809 from $60.05 and the answer is $49.24.
I hope this helps! :)
The figure below shows a circle inside of a square.
If the radius of the circle is 8 cm, find the area of
the shaded region
Answer:
Step-by-step explanation:
Shaded region is the circle.
r = 8 cm
Area of circle = πr² = 3.14 * 8 * 8 = 200.96 cm²
What is the slope 5,-9 and 5,3
Steps for 3m+ 6 - 2m + -22
Answer:
m-16
Step-by-step explanation:
3m+6-2m+-22=
3m-2m+6-22
m-16
Answer:
factoring
Step-by-step explanation:
break down the equation to get either two factors or three
The cost of admission to a festival was $112 for 9 children and 3 adults. The admission was $108 for 8 children and 3 adults in another festival. How much was the admission for each child and adult?
Answer:
cost of admission for each child was $4.00, and each adult was $25.33
Step-by-step explanation:
When solving questions like these , I like to break down the problem so I understand it better.
Let x ---> cost of the admission for each child
Y ---------> cost of the admission for each adult
9x+3y = 112 ---> equation A
8x + 3y = 108 ---> equation B
Subtract B from A
9x+3y=112
-8x+3y = 108
x = 112-108
x = 4
Find value of y by substituting value of x into equation
9(4)+3y=112
Solve for y
36+3y = 112
3y = 112=36
3y = 76
y = 25.33
The new donut shop sold 210 donuts in the first hour. At this same rate, how many donuts would the shop sell in 90 minutes? Solve the word problem using the unit rate.
Hey this is me again ....
[tex] \frac{210}{60} = \frac{x}{90} \\ [/tex]
[tex] \frac{21}{6} = \frac{x}{90} \\ [/tex]
Multiply both sides by 90
[tex]90 \times \frac{21}{6} = 90 \times \frac{x}{90} \\ [/tex]
[tex]15 \times 21 = x[/tex]
[tex]x = 315[/tex]
So that shop would sell 315 donuts in 90 minutes
Holy crab that is too much donuts impressive....
Don't have a good day , Have a great day ❤
Solve for u
24 =y6
u-
Answer:
4
Step-by-step explanation:
=> 24 = y(6)
=> y = 24/6 = 4
Today everything at a store is on sale the store offers a 20
% discount the regualr price of a t shirt is 18 what is the discount price
Answer:
$14.40 is the discount price.
Step-by-step explanation:
0.2 x 18 = 3.6
18 - 3.6 = 14.4
Help please and sorry it’s not clear
Answer:
C
Step-by-step explanation:
what’s the slope for this
Answer:
-2
Step-by-step explanation:
The sales tax rate in New Mexico is 5.125%. Select all the equations that represent the sales tax, t, you would pay in New Mexico for an item of cost c?
Group of answer choices
Answer:
c = c + (c × t %) or c = c + (c × .05125)
Step-by-step explanation:
c = cost
t = sale tax % 5.125% = .05125 as a decimal.
c = c + ( c × t %) or c = c + (c × .05125 )
