Answer:
the surface area of a penny = 662.81 mm²
Step-by-step explanation:
given:
A penny is a cylinder with a diameter of 19.05 millimeters
and a thickness of 1.55 millimeters.
find:
what is the surface area of a penny?
surface area of a cylinder formula:
As = 2 π r h + 2 π r²
let r = 19.05 / 2
r = 9.53 mm
let h = 1.55mm
plugin values into the formula:
As = 2 π (9.53) 1.55 + 2 π (9.53)²
As = 92.76 + 570.05
As = 662.81 mm²
therefore,
the surface area of a penny = 662.81 mm²
Answer:
the surface area of a penny = 662.81 mm²
Step-by-step explanation:
i got this correct in exam
Liza draws an angle that measures 150 degrees.She then draws a ray that divides the angle into 2 equal parts. What is the measure of each smaller angle?
Step-by-step explanation:
Liza draws an angle that measures 150 degrees.She then draws a ray that divides the angle into 2 equal parts
The given angle measures 150 degrees
She draw a ray that divides 150 degrees in to two equal angles
So we divide the angle 150 into two equal angles
[tex]\frac{150}{2} =75[/tex]
Two equal angles measures 75 degree each
So the measure of each smaller angle is 75 degrees
Answer:
75 degree
Which choice is the same as 1 hundred and 3 tens?
Math item stem image
Answer:
Ask your parents if no one have the answer.
Step-by-step explanation:
sorry if I don't have the answer.
Simplify by combining like terms.
6r+3s+2s+4r
Answer:
In combining like terms=6r+4r. 2s+3sMaking it=10r and 5r.
This method is used in like questions. Similar ones
Algebraic expression also.
Ask if you need further explanation.
Please,a Brainliest
Below is a cumulative relative frequency graph for the lengths, in minutes, of 200 songs
recorded by the Rolling Stones.
a. According to these data, the mean song length was 4.23 minutes, and the standard
deviation was 1.38 minutes. A music lover who wants to create a mix of songs wants to have 5 seconds of silence between songs, so he needs to add five seconds to the length of each song. He also wants to express the times in seconds, rather than minutes. Find the mean and standard deviation of the transformed data.
b. What are the mean and standard deviation of the z-scores of song lengths? Justify your answer.
Answer:
Adding 5 seconds would give
Mean= X`= 258.8 seconds
Standard Deviation=S= 82.8 seconds
The standard deviation remains the same.
Mean z= 0
Standard Deviation z= 1
Step-by-step explanation:
Mean= 4.23 minutes,
Standard Deviation= 1.38 minutes
He wants to add 5 seconds of silence between songs,
So we will convert these minutes into seconds
Mean= 4.23 minutes * 60= 253.8 seconds
Standard Deviation= 1.38 minutes* 60= 82.8 seconds
Adding 5 seconds would give
Mean= X`= 4.23 minutes * 60 +5 = 258.8 seconds
Standard Deviation=S= 1.38 minutes* 60= 82.8 seconds
The standard deviation remains the same.
b. Transforming into z- scores would give
Mean z= x`-u/s= 4.23-4.23/1.38= 0
Standard Deviation z= s/s= 1.38/1.38= 1
This is because changing into z- scores is simply a linear transformation.
Keys Per Minute recently hired Anne Bradford as a data entry clerk.Her starting rate of pay is $7.50 per hour and will increase to $8.00 per hour after 90 days. If her standard work week is 32 hours, what will her straight-time pay be 4 months from now ?
Answer:
$3904Step-by-step explanation:
From the question, since it will take 90 days that is 3 months for her hourly pay to increase to $8 per hour
we proceed to calculate her pay for the first 3 months
she works a total of 32 hours in a week
hence for three months, she would work 32*4*3= 384hours
therefore her pay for three months is= 7.5*384= $2880
Now the remaining one month her pay rate has been increased to $8 per hour
the number of hours in one month is 32*4= 128 hours
her pay would be 128*8= $1024
Her straight time pay for 4months is $2880+$1024 = $3904
Which expression is equivalent to 6x2−(4x+10)−3+(4x2−5x)?
10x2−9x−13
2x2−x+7
2x2−x−13
10x2−9x+7
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. The two figures shown above are congruent. Identify the corresponding sides and angles.
Answer:
b goes with s c goes with p a with r and d with q all you have to do is turn the one on the left to be the same way as the one on the right
Step-by-step explanation:
Answer:
below
Step-by-step explanation:
1)
flip the parallelogram ABCD to be in the same position as PQRS
2)
The corresponding sides are the parallel ones
BC ⇒ SP BA ⇒ SR AD ⇒ RQ CD ⇒ PQ3)
the correspondings angles are the congruent ones that are similar
∠ABC ⇒ ∠RSP ∠BCD ⇒ ∠SPQ ∠CDA ⇒ ∠PQR ∠DAB ⇒ ∠QRSPlease help me with this
Answer:
-9 3/4
Step-by-step explanation:
The last step is to simplify the fraction into a mixed one.
Plz help ASAP I need to get this done
Staci deposited $850 in a savings account at 2.25 percent interest. How much interest will the account earn in 10 years?
Answer: The interest will be $191.25
Step-by-step explanation:
What is -5(k+2)=13-(k-1)
Answer:
k=-6
Step-by-step explanation:
-5k-10=14-k
-24=4k
k=-6
Solve the inequality.
2x + 2 < 2(3x - 1)
Answer:no problem homie
x= 2
Step-by-step explanation:
Answer:
x < 1
Step-by-step explanation:
2x + 2 < 6x - 2
2 < 4x - 2
4 < 4x
x < 1
4. What is the prime factorization of 610?
Answer: Positive Integer factors of 610 = 2, 5, 10, 61, 610 divided by 2, 5, 61, gives no remainder. They are integers and prime numbers of 610, they are also called composite number.
Step-by-step explanation: In the answer hope it helps
The intersection of two lines is a(n)
Geometry
Answer:
In geometry, an intersection is a point, line, or curve common to two or more objects (such as lines, curves, planes, and surfaces). The simplest case in Euclidean geometry is the intersection of two distinct lines, which either is one point or does not exist if the lines are parallel.
Step-by-step explanation:
Answer:
A point
Step-by-step explanation:
In geometry, an intersection is a point, line, or curve common to two or more objects (such as lines, curves, planes, and surfaces).
7x + (9x + 8) = (7x + 9x) + 8 is what property
CD is a perpendicular bisector of . Which of the following could be the slopes of the two lines if plotted on a coordinate grid? A 1/2 and 2 B 4 and -4 C 1/3 and 1/3 D -7 and 1/7
Step-by-step explanation:
A is the correct answer of this question
The slopes that could have be plotted on the coordinate grid are -7 and 1/7
Before we determine the required slope of the two lines, we must understand that:
Two lines are perpendicular if the product of their slope is -1if the slope of a line is m, the slope of the line perpendicular will be -1/mSo, we choose the options that the product of the slopes equals -1
For option A:
[tex]product = 2 \times 1/2\\product = 1[/tex]
Hence option A is incorrect
For option B;
[tex]product = 4 \times - 4 = -16\\[/tex]
Hence option B is incorrect
For option C.
[tex]product = 1/3 \times 1/3\\product = 1/9[/tex]
Hence option C is incorrect
For option D;
[tex]product = -7 \times 1/7\\product = -1[/tex]
This shows that the slopes that could have been plotted on the coordinate grid are -7 and 1/7
Learn more here: https://brainly.com/question/13140886
There are 16 Blue and 20 Red pens in shop. The shopkeeper wants to keep them equally in boxes. Find the largest number of pen that can be put in each box
question 7 ASAP due soon
Answer: C. 1 + (-6) = -5
Please mark Brainliest!
Greg can drive 160 miles with 5 gallons of gas how many miles can he drive on one gallon of gas
Answer:
160 / 5 = 32 miles
Step-by-step explanation:
gary started measuring change in temperature every hour. in the first hour it went up by 1 degree. during the second hour it went down by 13 degrees. Model the changes as a sum of integers
Answer:
the answer is 1+ (-13)= -12
which of these numbers is a square number : A ) 4×10/5
B) 9×10/4
C) 4×10/3
D) 9×10/3
BRAINLIEST I NEED HELP BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST I looked on google and I am not looking for that
Answer:
well 20 years ago industrialization and technological advances had not been a major change in humanity as it is now so due natural processes were followed in food production but now with an advancement in research everyday food production now have to go through the laboratories instead of cultivation of farmland in order to satisfy our ever growing population which has reduced significantly the production and consumption of healthy foods coupled with the introduction of junks which many use to substitute normal food.
Answer:
What is the photo
Step-by-step explanation:
what property is 8a+4=4+8a
Answer: All real numbers are solutions
Step-by-step explanation:
help pleasee :) ill mark yours as brainliest or whatever its called.
Answer:
-8
So A and C are the correct answers
Step-by-step explanation:
A) -8 because -2 -6 = -8
B) -6 because 1 - 7 = -6
C) -8 because 5 - 13 = -8
D) -2 because 3 - 5 = -2
Hope that helped!!!
Answer:
(A) and (C)
Step-by-step explanation:
To find equivalent expressions, we need to first find the value of the original, [tex]-3+(-5)[/tex]
Adding a negative is the same as subtracting a positive. So, it's equivalent to [tex]-3-5[/tex], which is [tex]-8[/tex].
Now we test all the other expression to see if they equal -8.
A:
[tex]-2 + (-6)\\\\-2-6\\\\-8[/tex]
So this works.
B:
[tex]1 + (-7)\\\\1 - 7\\\\-6[/tex]
So this doesn't work.
C:
[tex]5+(-13)\\\\5-13\\\\-8[/tex]
So this works.
D:
[tex]3+(-5)\\\\3-5\\\\-2[/tex]
So this doesn't work.
Hope this helped!
if 2is the zero of the polynomial f(x)=x^2-8x+k then the value of k is
Answer:k=12
I hope this helps
Answer:
12
Step-by-step explanation:
zero of the polynomial is 2 ⇒ f(2) = 0
f(2) = 2² - 8 × 2 + k = 0
4 - 16 + k = 0
k = 12
Solve the literal equation for the given variable
P = 2W + 2L, for L
Answer:
l= 1 /2p - w
Step-by-step explanation:
Answer:
l= 1 /2p - w
A seat on a Ferris wheel is level with the center of the wheel. The diameter of the wheel is 210 feet (ft). If the wheel
rotates 45° counterclockwise and stops, how much does the height of the seat change?
Answer:
The change in the height of the seat of the Ferris wheel is a reduction in height of approximately 74.25 feet
Step-by-step explanation:
The given information are;
The position of the seat on the Ferris wheel = The center level of the wheel
The diameter of the Ferris wheel = 210 feet
The angle of rotation of the wheel = 45° counterclockwise
The height of a point on the Ferris wheel is given by the relation;
h = A·cos(b·x + c) + d
With regards to the question, we have;
h = The height of the seat of the Ferris wheel
A = The amplitude = 1/2 × The diameter of the wheel = 210/2 = 105 feet
360/b = The period
c = The phase shift = 90°
d = The mid line = 0
For a rotation of 45° counterclockwise or-45° clockwise, we have;
b·x = 45°, therefore;
h = 105 × cos(45° + 90°) + 0 = 105 × cos(135°) + 0
h = 105 × cos(135°) ≈ -74.25 feet
Therefore, the height of the seat of the Ferris wheel reduces by 74.246 feet.
In this exercise we have to know about rotation, therefore: the change in the height of the seat of the Ferris wheel is a reduction in height of approximately 74.25 feet.
The given information are:
The position of the seat on the Ferris wheel = The center level of the wheel. The diameter of the Ferris wheel = 210 feet The angle of rotation of the wheel = 45° counterclockwise
The height of a point on the Ferris wheel is given by the relation:
[tex]h = A*cos((b)(x) + c) + d[/tex]
With regards to the question, we have:
h = The height of the seat of the Ferris wheel
A = The amplitude = 1/2 × The diameter of the wheel = 210/2 = 105 feet
360/b = The period
c = The phase shift = 90°
d = The mid line = 0
For a rotation of 45° counterclockwise or-45° clockwise, we have;
[tex](b)(x) = 45\\h = 105 *cos(45 + 90) + 0 = 105 * cos(135) + 0\\h = 105 *cos(135) = -74.25 feet[/tex]
Therefore, the height of the seat of the Ferris wheel reduces by 74.246 feet.
See more about rotates at brainly.com/question/1571997
Write an expression for the following situation
The sum of -7 and a number 15 units to the right of 0
Answer:
15 + -7 OR 15 - 7
Step-by-step explanation:
There are 72 tablespoons of coffee in a jar. If it takes 48 days to empty the
jar, how much was used each day?
Answer:
2.7 tablespoons.
Step-by-step explanation:
If you divide 72 by 48 you will get 2.57142857143, round to the nearest tenth you get, 2.7 tablespoons
i want to know what g is
Answer:
Step-by-step explanation:
2(5-4g) + 3g - 11 = 5(g-3) - 12 - 3g (remove the parantheses)
10 - 8g + 3g - 11 = 5g - 15 - 12 -3g (Calculate and collect like terms)
-1 - 5g = 2g - 27 (move the terms)
-5g -2g = 27 + 1 (collect like terms and calculate)
-7g = -26 (divide both sides)
so G = 26/7
Answer:
G=27/6
Step-by-step explanation:
2(5−4g)+3g−11=5(g−3)−12−3g
(2)(5)+(2)(−4g)+3g+−11=(5)(g)+(5)(−3)+−12+−3g
10+−8g+3g+−11=5g+−15+−12+−3g
(−8g+3g)+(10+−11)=(5g+−3g)+(−15+−12)
−5g+−1=2g+−27
−5g−1=2g−27
Step 2: Subtract 2g from both sides.
−5g−1−2g=2g−27−2g
−7g−1=−27
Step 3: Add 1 to both sides.
−7g−1+1=−27+1
−7g=−26
Step 4: Divide both sides by -7.
-7g/-7=-26/-7
g=26/7
