Answer:
Temperature after 12 hours = 25°C
Step-by-step explanation:
Given:
Current tempreture = -23°C
Tempreture incresing rate = 4°C per hour
Total time = 12 hour
Find:
Temperature after 12 hours
Computation:
Temperature after 12 hours = Current tempreture + (Tempreture incresing rate)(Total time)
Temperature after 12 hours = -23 + (4)(12)
Temperature after 12 hours = -23 + 48
Temperature after 12 hours = 25°C
some body have asked this question I have forgotten the name the question is: the circumference of a circle is 36π cm what is the radius of a circle if any body finds it then please answer him or her
The formula for the area of a circle is given by A = πr², where r is the radius of the circle.
Since we know that area A = 36π, we can substitute into the formula for area A and get:
36π= πr²
Now, dividing both sides by π in order to begin isolating r on one side of the equation, we get:
(36π)/π = (πr²)/π
36(π/π) = (π/π)r²
36(1) = (1)r²
36 = r²
r² = 36 (since equality is symmetric, i.e., if a = b, than b =a)
Now, taking the square root of both sides, we have:
√(r²) = ±√(36)
r = √(36) (since a distance cannot be physically negative, then we have to use the positive square root)
r = 6 (since (6)(6) = 36)
CHECK:
A = 36π
36π= π(6²)
36π = π(36)
36π = 36π
Therefore, r = 6 is indeed the radius of the circle with an area of 36π.
Answer:
The radius of the circle is 6.
Explanation:
Take the square root of 36.
CAN SOMEONE PLS HELP MEE!! I BEG YOU PLSS
Answer:
(x + 2)² = 9
x = 1 or - 5
Step-by-step explanation:
x² + 4x - 5 = 0
Solving first using completing the square method
x² + 4x = 5
x² + 4x + (4/2)² = 5 + (4/2)²
x² + 4x + 2² = 5 + 2²
x² + 4x + 4 = 5 + 4
x² + 4x + 4 = 9
Factorise
x² + 2x + 2x + 4 = 9
x(x + 2) + 2(x + 2) = 9
(x + 2)(x + 2) = 9
(x + 2)² = 9
Square root both sides
√(x + 2)² = √9
x + 2 = ± 3
x + 2 = +3
x = 3 - 2
x = 1
x + 2 = -3
x = -3 - 2
x = -5
Hence, x = 1 or - 5
in comparison to 1/3 where would 2/6 be located on a number line
Answer:
The same place as 1/3
Step-by-step explanation:
image for more context
PLZZZ GIVE ME BRAINLIEST
Tiffany and Dion are having a walking race. The equation and graph show the distance each person is from the starting line,
Tiffany's Distance
d = 2.5t, where d is the distance, in yards that Tiffany is from the starting line after t seconds
PLEASE ANSWER A., B. And C.
Answer:
Step-by-step explanation:
Tiffany's distance is defined by the equation,
d = 2.5t
Here, d = distance of Tiffany from the starting line
t = time
a). d = 2.5t
[tex]\frac{d}{t}=2.5[/tex]
Tiffany's rate = 2.5 yards per second
b). Since, slope of a line passing through two points [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex] is given by,
Slope = [tex]\frac{y_2-y_1}{x_2-x_1}[/tex]
Therefore, slope of the line passing through two points (0, 10) and (10, 35)
= [tex]\frac{35-10}{10-0}[/tex]
= 2.5 yards per second
Dion's walking rate = 2.5 yards per second
Equation that defines the distance of Dione,
d = mt + b
Here, m = rate of the walking by Dione
b = y-intercept
Hence, equation will be,
d = 2.5t + 10
c). If d = 60 yards
For Tiffany,
d = 2.5t
60 = 2.5t
t = 24 seconds
For Dion,
d = 2.5t + 10
60 = 2.5t + 10
2.5t = 50
t = 20 seconds
Therefore, Dion will take less time and finish first.
what is the definition of vertical angles
Answer:
each of the pairs of opposite angles made by two intersecting lines.Step-by-step explanation:
Answer:
vertical angles
geometry the pair of equal angles between a pair of intersecting lines; opposite angles Also called: vertically opposite angles
Step-by-step explanation:
M+7.9=39 1/2 What is M?
The value of M from the equation; M+7.9=39 1/2 is; 31.6
One variable equationsThe given equation is; M+7.9=39 1/2.
By simplification;
M+7.9=79/2Hence, by cross product;
2M + 15.8 = 792M = 79-15.8M = 63.2/2M = 31.6
Read more on one-variable equations;
https://brainly.com/question/21528555
Can someone please help me with this?? I would love the help!!
The cone has a base diameter of 20cm and a slant height of 25 cm.
A circle is drawn around the surface of the cone at a slant height of 10cm above the base.
The curved surface of the cone above the circle is painted grey.
Work out the area of the curved surface of the cone that is not painted grey,
Give your answer as a multiple of
You must show all your working.
Answer:
The area of the cone not painted is approximately 196.35 cm²
Step-by-step explanation:
The question relates to similar shapes;
We have;
The base diameter of the cone, D₁ = 20 cm
The slant height of the cone, l₁ = 25 cm
The height at which the circle is drawn, 10 cm above the base, we have; l₂ = 25 cm - 10 cm = 15 cm
Let 'x' represent the diameter of the circle formed by the drawn circle, we have;
By similar triangles, we get;
D₁/l₁ = x/l₂
x = l₂ × D₁/l₁
20/25 = x/15
x = (20/25) × 15 = 12
The curved surface area of the cone, A = π·r·l
The area of the curved surface of the entire cone, A₁ = π·r₁·l₁
r₁ = D₁/2
Therefore, we get, A₁ = π × 20/2 × 25 = 250·π
A₂ = π × 15/2 × 25 = 187.5·π
The area of the cone not painted, A = A₁ - A₂
∴ A = 250·π - 187.5·π = 62.5·π
The area of the cone not painted, A = 62.5·π ≈ 196.35
The area of the cone not painted ≈ 196.35 cm²
Write an equation modeling the revenue generated: x1 + x2 = 9,000
Answer: Small correction from the bottom one its 35, 22
Step-by-step explanation: Edginuity 2021 just got is right.
Answer:
35 and 22
Step-by-step explanation:
Carlie runs two different business. She needs to pay $100 for materials, and pay her associates $12 per hour for her childcare business. And for her lawn care business, she has to pay $275 for materials, and pays her associates $10 per hour.
Write two functions, C(x) and L(x), to represent the amount of money she will need to run her childcare business and her lawn care business. Complete the equations by filling in the blanks.
Childcare business: C(x) =
Lawn care business: L(x) =
Answer: (Answer in photo, explanation below)
Step-by-step explanation:
Carlie is running two different business.
She needs to pay:
- For the childcare business,
100$ for the materials
12$ per hour for each associate for her childcare business, so if we call:
= the number of hours worked by each associate
= the number of associates
The total cost for the childcare business is:
(1)
- For the lawn care business,
275$ for the materials
10$ per hour for each associate for her lawn care business, so if we call:
= the number of hours worked by each associate
= the number of associates
The total cost for the lawn care business is:
(2)
Therefore, the total expenses from both businesses is the sum of (1) and (2):
Who could help me with this please and thank you
Answer:
[tex]y=\frac{1}{5} x-2[/tex]
A positive number is 5 times another number if 21 is added to both the numbers the one of the new numbers becomes twice the other number. what are the numbers
Answer:
Hey mate......
Step-by-step explanation:
This is ur answer.....
A positive number is 5 times another number. If 21 is added to both the numbers, then one of the new numbers becomes twice the other new number. What are the numbers? Thus, the required numbers are 7 and 35
A picture is attached!
Hope it helps!
Brainliest pls!
Follow me! :)
Can some one help on number 5 and 6 please
Step-by-step explanation:
To find mean-
you add all the #'s together and then (/) them by the amount of the #'s
#5. 8, 2, 3, 5, 7
8+2+3+5+7
10+8+7
10+15
25
25/ 5
5
#6. 4, 1, 6, 3, 6, 4
4+1+6+3+6+4
5+9+10
5+19
24
24/ 6
4
The median is the (middle) you have to put the #'s in order least to greatest
#5. 2, 3, 5, 7, 8
cross one by one on both sides
3, 5, 7,
5
#6. 1, 3, 4, 4, 6, 6
3,4,4,6
4,4
4 (because in the middle of 4 and 4 well is 4) (if you had 5 and 6 left it would be 5.5)
The mode is the # that appear the most often in the set of data.
#5. there is no more because there is one of each # there is none that has 2 or more (N/A)
#6. 1,3, 4, 4, 6, 6
the mode is 4 and 6
because those #'s have 2 or more and they are both at 2 so they are both the mode
A computer program found that the line y=3x - 52 is the best line of best fit to represent the temperature outside and the amount of ice cream sold on the beach. If the temperature is predicted to be 70 degrees tomorrow, how much ice cream can they expect to sell?
Answer:
158
Step-by-step explanation:
given x = 70
=> y = 3(70) -52 = 210 -52 = 158
the ice cream they can expect to sell = 158
Find the area of the triangle
Answer:
32 m^2
Step-by-step explanation:
Area = 8 x (2 + 6) x 1/2
Area = 8 x 8 x 1/2
Area = 64 x 1/2
Area = 32
Hope that helps! :)
-Aphrodite
Answer:
32
Step-by-step explanation:
formula for area of a triangle = [tex]A=\frac{bh}{2}[/tex]
where b = base length and h = height
The triangle shown has the following the dimensions
base length = 2 + 6 = 8m
height = 8m
Using these dimensions we plug in the values into the formula
[tex]A=\frac{8*8}{2} \\8*8=64\\\frac{64}{2} =32[/tex]
Hence, the area of the triangle is 32 square meters
i have no idea what to do please help it was due on friday please please help
Answer:
sin Z = 4/5
sin C = 24/25
cos A= 4/5
tan Z = 4/3
Step-by-step explanation:
1.)sin Z = O/H
sin Z = 36/45 = 4/5
sin Z = 4/5
2.)sin C = O/H
sin C = 48/50 = 24/25
sin C = 24/25
3.)cos A = A/H
cos A = 40/50 = 4/5
cos A= 4/5
4.)tan Z = O/A
tan Z = 24/18 = 4/3
tan Z = 4/3
-TheUnknownScientist
5y + 32 = -64 find the value of y
Answer:
[tex]y = 19 \frac{1}{6} [/tex]
Step-by-step explanation:
[tex]5y + 32 = - 64 \\ 5y = - 64 - 32 \\ 5y = 96 \\ \frac{5y}{5} = \frac{96}{5} \\ y = 19 \frac{1}{6} [/tex]
hope this helps you.
Can I have the brainliest please?
Have a nice day !!!!
~Hi1315~
Write each as an algebraic expression.
4 cubed
Answer:
4 exponent 3 or if you want the answer it is 64
Step-by-step explanation:
See the image below:)
An adult takes 400 mg of ibuprofen. Two hours later, there is 201.6 mg of
ibuprofen left in the persons system. How long will it take until there is only 25 mg
of ibuprofen left in the person's system? Show all work and round your answer to
three decimal places.
Answer:
It will take 3 hours 46 minutes and 8 seconds to use 375 mg of ibrufen.
Step-by-step explanation:
An adult takes 400 mg of ibuprofen. Two hours later, there is 201.6 mg of
ibuprofen left in the persons system
This means that in 2 hours time
400- 201.6= 198.4 mg was used up.
We need only 25 mg in the system
so 400- 25= 375 mg time is needed
time mg
2 hour 198.4
x 375
Using the cross product rule
x= 375*2/198.4
x= 3.780 hrs
Which means 3 hours and (0.78* 60)= 46.8 minutes.
It will take 3 hours 46 minutes and 8 seconds to use 375 mg of ibrufen.
PLEASE HELP ILL GIVE BRAINLIEST
Answer: 10
Step-by-step explanation:
count the dots from number 2 and below
Answer:
10 students said they had 2or less siblings and dont give me brainliest
Step-by-step explanation:
me pueden ayudar en esto por favor
Answer:
2cm: 6.28
4cm: 12.56
6cm: 18.84
8cm: 25.12
10cm: 31.4
12cm: 37.68
Step-by-step explanation:
In a circle with radius 2.9, an angle measuring 5.6 radians intercepts an arc. Find the length of the arc to the nearest 10th.
Answer:
in order to get answer you will add 2'9+5'6=8'5
HELPP!! Simplify sin q + cosq cotq
Answer:
csc(q)
Step-by-step explanation:
You could plug in values for q for the problem and the choices and see which choice gives the same outputs. Of course, that would mean you need to know that cot() is cos()/sin() or 1/tan() and csc()=1/sin()
So anyways you can also use identities to rewrite the given expression
sin(q)+cos(q)cot(q) [given ]
sin(q)+cos(q)cos(q)/sin(q) by quotient identity
sin(q)+cos^2(q)/sin(q) [simplify]
sin(q)sin(q)/sin(q)+cos^2(q)/sin(q) multiply first term by 1
sin^2(q)/sin(q)+cos^2(q)/sin(q) [simplify ]
(sin^2(q)+cos^2(q))/sin(q) [combined fractions ]
1/sin(q) by Pythagorean identity
csc(q) by reciprocal identity
for brainiest:):):):):):)
Solve the system by graphing write the solution as an ordered pair y=-3x+3 y=1/2x-4
Answer:
Hi! The answer to your question is (2,-3)
Step-by-step explanation:
☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆
☁Brainliest is greatly appreciated!☁
Hope this helps!!
- Brooklynn Deka
Solve for x. The triangles in each pair are similar.
A. 14
B. 3
C. 5
D. 12
Answer:
C
Step-by-step explanation:
The volume of the geometric figure below is ________ cubic cm.
Answer:
180
Step-by-step explanation:
V= 1/3 B*h ----- (B= area of base) (h= height)
Area of a triangle (base)
1/2 b*h
1/2 (5)(12)
1/2 60
B = 30
H = 18
V= 1/3 30*18
1/3 540
V = 180
A right triangle has side lengths 8 ,15 , 17 and as shown below.
Use these lengths to find TanA, sinA,cosA
Answers:
tan(A) = 8/15
sin(A) = 8/17
cos(A) = 15/17
==================================================
Explanation:
The tangent ratio involves the opposite over adjacent. With respect to angle A, the opposite side is 8 units long as this side is as far as possible away from angle A. In contrast, the adjacent side is 15 units long because this leg is closest possible and the two are right next to one another.
Therefore,
tan(angle) = opposite/adjacent
tan(A) = BC/AC
tan(A) = 8/15
---------------
As for the other trig ratios, they are:
sin(angle) = opposite/hypotenuse
cos(angle) = adjacent/hypotenuse
which explains why sin(A) and cos(A) are 8/17 and 15/17 respectively.
Jackie has stacked two layers of cubes. She knows that the yellow cubes are the same size as the red cubes. She also knows that the red layer has the following dimensions: Length= 3 over 2 ft, width= 1 ft, height= 1 over 2 ft.
If Jackie continues to stack layers of cubes, how many layers in all are needed to build a rectangular prism with a volume of 3 cubic feet?
Gina drew three small congruent circles
beside one large circle.
2 cm
Based on the diagram, which answer
choice is closest to the area of the large
circle?
F 28.3 cm?
H 18.8 cm?
G 12.6 cm? J 24.4 cm?
7.9B
Answer:
7.9
Step-by-step explanation: