Answer:
Circumference of circle =2πr
21π=2πr
r=21/2cm
Area of circle =πr²=π(21/2)²=110.25πcm²
Step-by-step explanation:
The area of the circle in square centimeters is 110.25π cm².
What is the circumference of a circle?It is the length of the curve enclosing the circle. It is given by:
circumference = 2πr
What is the area of the circle?The area of the circle is the area of the region enclosed by the circle.
It is given by:
Area = πr²
The circumference of the circle is given by:
Circumference = 21πcm
⇒ 2πr = 21πcm
⇒ r = 10.5cm
Now we can find the area of the circle as follows:
πr² = π × 10.5 × 10.5 cm²
= 110.25π cm²
Thus, we have found the area of the circle in square centimeters to be 110.25π cm².
Learn more about circumference here-https://brainly.com/question/21566730
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Pete and his sister, Sophie, play the game Space Mission Commander on their video game console. Pete has already completed 27 missions. Sophie has only completed 13 missions. From now on, Pete plans to complete 3 missions per week. Meanwhile, Sophie plans to complete 5 missions per week.
Step-by-step explanation:
Pete has already completed 27 missions. Pete plans to complete 3 missions per week
Let x represents weeks
Games completed = 3x + 27
Sophie has only completed 13 missions. Sophie plans to complete 5 missions per week.
Games completed = 5x + 13
3x + 27 = 5x + 13
27 - 13 = 5x - 3x
2x = 14
x = 7
By the seventh week, they would have completed equal number of games,
The right rectangular prism shown below is made of equal-sized cubes. The side length of each cube is 2 1/2 inches. What is the volume in cubic inches, of the right rectangular prism?
The image of the right rectangular prism is missing, so i have attached it.
Answer:
volume of the right rectangular prism = 625 in³
Step-by-step explanation:
The rectangular prism is made of equal-sized cubes. Thus, let's first find the volume of 1 cube.
Formula for volume of one cube is;
V = a³
where
a is the length of one side of the cube
We are told that this length is 2½ inches
Thus;
a = 2½ = 5/2 inches
>> V = (5/2)³
>> V = 125/8 in³
Now, in the rectangular prism attached, if we count the number of cubes we have, it is equal to 40 cubes
Therefore, the volume of the prism is;
Volume of one cube × 40
>> volume of the prism = (125/8) × 40
volume of the prism = 625 in³
HELP ASAP!!!!!!!!! 30 POINTS + BRAINLIEST!!!!!!!!
Answer:
Step-by-step explanation:
What is the square root of 4586
Answer:
67.72
Step-by-step explanation:
Answer:
57.68*
Step-by-step explanation:
Dont really know how to explain....
Five friends had lunch together. Their
total bill was x dollars, including tax and
tip. They shared the cost equally and
each friend paid less than $10. Which inequality shows the possible solutions for x, the total amount of the bill?
A. x > 50
B. x < 50
C. x > 50
D. x < 50
Answer:
B and D are the same, but its less than 50 so X < 50
Step-by-step explanation:
please help a girl out:
Who is correct? Fred or Felicity?
Answer: Felicity
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
I hope this helps, and enjoy the rest of your day!
GIVIING BRAINLIEST TO FIRST PERSON WHO ANSWERS!!! UPPING POINTS TO 25!!!!!
Answer:
[tex]x[/tex] ≈ [tex]349[/tex]
Step-by-step explanation:
SInce we don't know the side length, we will replace it with [tex]X[/tex] for now.
To make this problem easier, since the angle of elevation = the angle of depression, we can start from the base, and use Tangent.
[tex]Tangent=(\frac{Opposite}{Adjecent})\\[/tex]
Opposite of [tex]19[/tex]° = [tex]120\\[/tex]Adjacent of [tex]19\\[/tex]° = [tex]X\\[/tex][tex]tan19[/tex]° [tex]= \frac{120}{x}[/tex]
then, divide [tex]120[/tex] by [tex]tan19[/tex]°[tex]120 - tan19[/tex]° [tex]= x[/tex]
[tex]x[/tex] ≈ [tex]349[/tex]
Okayyyy...... so it's really late right now, but I just found out there was an answer key online. They show all their work, which is pretty nice, so I uploaded/ attached that to this answer, and yes, I promise it's not a scam. Anyways, I gotta head out soon. Good luck on the rest of your homework though! :)
Max read 1/3 of his at school. He reads 22 more pages when he arrives home, making 127 pages read so far. How many pages are in Max's novel?
Answer:
315
Step-by-step explanation:
127-22=105
105 times 3 is equal to 315.
Answer:
Step-by-step explanation:
315!!!!!
is this a right triangle 6,12,8
Answer:
No it is a obtuse triangle
Step-by-step explanation:
Answer:
No.
Step-by-step explanation:
HELP AGAIN THESE ARE CONFUSING WHEN THEY SAY OF I WILL GIVE BRAINLEST
Answer:
1 18/35
Step-by-step explanation:
The Science Club went on a two-day field trip. The first day the members paid $40 for transportation plus $19 per ticket to the planetarium. The second day they paid $90 for transportation plus $16 per ticket to the geology museum. Write an expression to represent the total cost for two days for the n members of the club.
Answer:
total cost = $130 + $35n
Step-by-step explanation:
Cost incurred on the first day.
Fixed cost = $40. this amount is fixed because it does not depend on the number of students that take the trip
variable cost = $19n. It is variable because it depends on the number of students that take the trip. the more the club members that take the trip, the higher the cost
Total cost on the first day = $40 + $19n
Cost incurred on the second day
Fixed cost = $90. this amount is fixed because it does not depend on the number of students that take the trip
variable cost = $16n. It is variable because it depends on the number of students that take the trip. the more the club members that take the trip, the higher the cost
Total cost on the second day = $90 + $16n
Total cost incurred would be the sum of the two costs incurred on the two days
total cost = $40 + $19n + $90 + $16n
= $130 + $35n
An isosceles triangle has an angle that measures 102°. Which other angles could be in that isosceles triangle?
Answer:
(180-102)/2 = 39° each (remaining 2)
Simplify: 7(-2x - 3) *
-14x - 21
-14x - 3
14x - 21
14x - 3
~PLEASS HELP FAST~
Determine weather y varies directly with x. If so, find the constant of variation and write the equation
HURRY!
An auto shop has 2 used vehicles for sale, 1 car and 1 truck. The truck is 3 years older than the car but 7 years older than one-half the car's age. How many years old is the car? 7 year old 7 year old 8 years old 8 years old 9 years old 9 years old 10 years old
Sergio passes by a bike store on Monday and sees his dream bike in the window. It cost 120 . He passes by on Wednesday and is thrilled to see that is marked down by 1/4 . What is the new price of the bike
Answer:
90
Step-by-step explanation:
120 - (120/4)
120 - 30 = 90
does anyone know the answer to this?
Answer:
Your answer is going to be answer A; (-3,2).
Answer:
A. (-3,2)
Step-by-step explanation:
C (0,0)
where,
(x,y)
Rise/run = y/x
3 units left = run -3 which is x, it's left so it's negative.
2 units up = rise 2 which is y, it's p so it's positive.
C (0,0) = (x,y) = (-3, +2)
So, C (-3,2) since it's already both at zero all you do is replace however if there is another number other than zero you just combine like terms so,
if C was (9,10) the new coordinates would be C (6,12)
what is 13 D + 8 equals -1
solve for d
Answer:
D= -9/13
Step-by-step explanation:
13d+8−8=−1−8
13d=−9
13d /13 = −9 /13
Hope this helps!
Can someone help me with this?
Answer:
The first step to dividing fractions is to find the reciprocal (reverse the numerator and denominator) of the second fraction. Next, multiply the two numerators. Then, multiply the two denominators. Finally, simplify the fractions if needed.
Step-by-step explanation:
What is the coefficient of x in the expansion of (2x−4)^2?
What is the coefficient of x^2 in the expansion of (x+3)(x^2+7x+8)?
Answer:
[tex]-16[/tex], [tex]10[/tex]
Step-by-step explanation:
To get the coefficients, we first need to factor the expressions
[tex](2x-4)^{2}[/tex]
[tex](2x-4)(2x-4)[/tex]
[tex]4x^{2}-16x+16[/tex]
The coefficient of x is -16
[tex](x+3)(x^{2}+7x+8)[/tex]
[tex]x^{3}+10x^{2}+29x+24[/tex]
The coefficient of x² is 10
plz mark me brainliest. :)
What is the diameter of a circle with a radius of 7 inches
Answer:
14
Step-by-step explanation:
the diameter is the radius multiplied by 2
What is the area, in square inches, of a rectangle whose length is 90 inches
and whose width is 60 inches?
A 300 sq. in
B. 1500 sq. in
C 4200 sq. in.
D. 5400 sq. in
Answer:
D
Step-by-step explanation:
Answer:
300
Step-by-step explanation:
a square has 4 sides so you add both sides 60 + 60= 120, 90+90=180
120+180=300
Find the value of or in the triangle shown below. 97 47
A dessert recipe calls for image cups of milk and makes 5 servings. How many cups of milk are needed for 8 servings?
Answer:
1.05
Step-by-step explanation:
Answer:
u;t5g3ji/lfvjk.dvnjfvjk.f
Step-by-step explanation:
Pls help, for 10 points!
Answer:
I think 9 but dont quote me on it
Answer:
2
Step-by-step explanation:
in khan academy i put 9 because thats what the last person said here but it was wrong and the correct answer was 2 so its 2 for sure.
PLEASE HURY!!!! 20 PIONTS!!!! Find the area of this shape
Answer:
it is 3
Step-by-step explanation:
Answer: Hope this helps <3
Step-by-step explanation: the answer is: The Area Of This Shape Is 3
Help me with this problem please!
Answer:
Step-by-step explanation:
i can barely see that maybe re upload a better picture and someone will help
Jim is building a model airplane. The scale is 1 in: 40 ft. The actual wingspan of the plane is 211 feet. How long will wings of the model be?
Help me please will mark brainliest
Answer:
197in^2
Step-by-step explanation:
5x5=25(top face)
5x5=25(left face)
9x5=45(bottom face)
6.4x5=26(right face)
Front and behind face: trapezoid area (trapezoid formula h x (a+b)/2)
(5+9)/2 x 5=7x5=35
35+35+25+25+45+25=197in^2