Work out the surface area of the cylinder. (Image attached)
Answer:
[tex]area = 2\pi {r}h \\ = 2 \times 3.14 \times 10 \times 22 \\ = 1382.3 \: {cm}^{2} [/tex]
Answer:
2010.62cm
Step-by-step explanation:
A =
[tex]2\pi \: rh + 2\pi {r}^{2} [/tex]
[tex] = 2\pi(10)(22) + 2\pi( {10}^{2} )[/tex]
= 1382.30 + 628.32
=2010.62
formula to find the lateral area of a right cone
Answer:
This is the formula to find a lateral area of a right cone
A=1/2bh
Or A=1/2lw
A grocery store manager notices that this month her store sold a total of 936 gallons of ice cream, which represents a decrease of 20% from last month. On the other hand, her store sold 838 pounds of broccoli this month, which represents an increase of 22% from last month. How much ice cream and broccoli did the store sell last month? Round your answers to the nearest integer.
The store sold _________ gallons of ice cream last month.
The store sold _________ pounds of broccoli last month.
Answer:
the is 30 and 30
Step-by-step explanation:
Let f(x)= -5x+6. Find and simplify f(3b-5).
Answer:
-15b+31
Step-by-step explanation:
f(x)=-5x+6
f(3b-5)=-5(3b-5)+6=-15b+25+6=-15b+31
PLEASE HELP ASAP NUMBER 8 AND 9 SHOW WORK AND I WILL GIVE BRAINLIEST
Answer:
question 8
Step-by-step explanation:
y = 4
2x + 3y = 22
put y = 4 into equation 2
2x + 3 ( 4) = 22
2x + 12 = 22
2x = 22 - 12
2x = 10
x = 5
therefore x = 5 and y = 4
I need some help!!! I will try to give brainliest!!!
Answer:
54 ft cubed
Step-by-step explanation:
Area of this rectangular prism is Base, Height, Length all multiplied.
3 * 3 * 6
9 * 6
=54
AABC is similar to ADEF.
Find x.
perimeter of triangle DEF= 60
help please !!!!!!!!!!!!!!!
9514 1404 393
Answer:
yes
Step-by-step explanation:
The triangles are given as right triangles. Hypotenuses QT and RS are given as congruent.
We also have XS ≅ TP. By the addition property of equality, this means ...
XS +ST ≅ ST +TP
By the segment sum theorem, this means ...
XT ≅ SP
XT and SP are the corresponding legs of the right triangles. So, we have corresponding hypotenuses and corresponding legs congruent. This lets us conclude ΔXQT ≅ ΔPRS by the HL theorem.
solve it plssssssssssssss
Answer:
The area of the living room is 20x20 or 400 square feet
the area of the dining room is 15x10 or 150 square fee
The sum of the areas of the two rooms is 400+150 or 550 square feet of carpeting
Hope that helps :)
Have a wonderful day!
Answer:
the area of the living room is 20 x 20 or 400 square feet the area of the dining room is 10 x 15 or 150 square feet the sum of the two rooms is 400 + 150 or 550 square feet of carpeting
Step-by-step explanation:
A researcher’s garden contains 90 sweet pea plants,
which have either white or purple flowers. About 70 of the plants have purple flowers, and about 20 have white flowers.
Would you expect that one plant randomly selected from the garden will have purple or white
flowers? Explain
Hey buddy I am here to help!
No, because according to theoretically probability most of the sweet pea plants have purple flowers causing that one plant to have the probability purple flowers more than of the white flowers!
Here is teh mathematical way-
total plants = 90
purple flowers = 70
white flowers = 20
higher probability of flower = 70/90
Hope it helps!
Plz mark me brainliest
please answer a little quiet
IT is urgent
.Factorize: 4(x-y)^2 -9
.Evaluate : 1001×99
Answer:
1. (2x - 2y)² - 9
2. 99099
Step-by-step explanation:
We know the a+b formula :
(a-b)² = a² - 2ab + b²
1. 4(x-y)^2 -9
4(x² - 2xy + y²) - 9
4x² - 8xy + 4y² - 9
(2x - 2y)² - 9
2. 1001 × 99
= 99099
1001
× 99 ----------
9009
9009× ----------- 99099
A little boy stands on a carousel and rotates around the ride 4 times. If the distance between the Little boy and the center of the carousel is 6 feet, then how many feet did the little boy travel?
Solve for x. Show your work.
-1/2x < -12x
Answer: x > 24
Step-by-step explanation: -12x/-1/2x = 24. 24 is the given when dividing. The sign is flipped after dividing negatives.
Answer:
x < 0
Step-by-step explanation:
it's the same thing just with that slash( / ).........
please help me out on this one
Try this triangle: 3ft, 4ft, and 1 ft
Is the first plus second greater than the third? Is 3+4> 1? ________
Is the second plus third greater than the first ? is 4+1 >3?___________
Is the third plus first greater than the second? Is 3+1 >4_________
Can it make a triangle? Explain why?
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Answer:
yes, yes, no; No
Step-by-step explanation:
We have to assume you have no trouble with single-digit addition and comparison of two numbers.
3+4 > 1 ⇒ 7 > 1 . . . . yes
4+1 > 3 ⇒ 5 > 3 . . . . yes
3+1 > 4 ⇒ 4 > 4 . . . . no
These lengths will not make a triangle because the triangle inequality is not satisfied.
_____
Additional comment
You will notice that we found the result of interest when we added the two smallest numbers (1 and 3) and compared the sum to the largest number (4). This is a shortcut you can use for any "will these make a triangle" question. You don't need to bother comparing larger numbers to smaller ones. You already know they are larger.
Pls can some help me
9514 1404 393
Answer:
A. 17.5 miles
Step-by-step explanation:
Your knowledge of triangles tells you the hypotenuse is longer than the long leg of the triangle, and is shorter than than the sum of the two legs. This means the difference between Michael's distance and Leah's distance will be strictly less than 25 miles.
The only answer choice in that range is 17.5 miles.
__
If you want to do the math, you can find Michael's distance to be ...
38 +25 = 63 miles.
Leah's distance will be ...
√(38² +25²) = √2069 ≈ 45.5 miles.
Then Michael's excess distance is ...
63 -45.5 = 17.5 miles
If the area of a circle is 154cm2 what is the radius of that circle
Answer:
7
Step-by-step explanation:
If you use the pi button:
the radius is 7
154cm² ÷ pi = 49
Square root of 49 = 7
Write the equation of the line in fully simplified slope-intercept form.
Answer:
y= -2/5x-6
Step-by-step explanation:
y int is at -6
rise/run= -2/5
Carl worked 15 hours and Derrick worked 20 hours their combined pay is $640
How much an hour did Carl get paid
Answer:
he got payed 5 dollars an hour
Find the value of x.
60° 130°
The value of x is type your answer...
Answer:
x = 170
Step-by-step explanation:
In order to solve this, we need to know that there is 360° in a full circle. Knowing this, we can make the following equation from the diagram provided...
60° + 130° + x° = 360
x° = 360° - 60° - 130°
x° = 170°
x = 170
Use the distributive property to remove the parenthesis: (m + 2) 3.
Answer:
Step-by-step explanation:
(m+2)3
m*3+2*3
3m+6
distributive property example:
a(b+c)
=a*b+a*c
=ab+ac
[tex]3 \: m + 6[/tex] ✅
[tex]\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\orange{:}}}}}[/tex]
Using the distributive formula, [tex]\sf\purple{a\: ( \:b + c\: ) = \:a b + a c}[/tex], we have
[tex](m + 2) \: 3 \\ = m \times 3 \: + \: 2 \times 3 \\ = 3 \: m + 6[/tex]
Note:-
[tex]\sf\red{PEMDAS\: rule.}[/tex]
P = Parentheses
E = Exponents
M = Multiplication
D = Division
A = Addition
S = Subtraction
[tex]\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{!}}}}}[/tex]
A car covers a distance of 66.7 km in 1 litre of petrol .How much distance will it cover in 10 litre of
petrol ?
Answer:
666.7
Step-by-step explanation:
66.7*10=666.7
the reason its not 667 is beacuse of the repeateing rule like 1/3 is .33333
and 2/3 is .66667 the reason there is a 7 at the end is becuse you round up so i doesn't run on forever
Answer:
667 km
Step-by-step explanation:
66.7 km / 1 liter
Y = 66.7x
X = Liters of Petrol
Y = Total KM Traveled
Y = 66.7 (10)
Y = 667km
in which diagram are <1 and <2 supplementary? I'm not sure if its d.
Answer:
D
Step-by-step explanation:
Measure of 1 and Measure of 2 will add up to 180 degrees
Answer:
D
Step-by-step explanation:
Supplementary means they add to 180,
In D they form a straight line which is 180 degrees
Given the following function, find h(-4)
h(x) = 8x2 – 5
h(-4) =
Step-by-step explanation:
put the value of x in the given function...
Answer:
h(-4) = 123
Step-by-step explanation:
h(x) = 8x² – 5
h(-4) = 8(-4)² - 5
h(-4) = 8(16) - 5
h(-4) = 128 - 5
h(-4) = 123
Use Newton''s method to find the second and third approximation of a root of x^3 + x + 3= 0 starting with x1 = -1 as the initial approximation.
The second approximation is x2= ?
The third approximation is x3= ?
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Answer:
see attachment
Step-by-step explanation:
The iterator for Newton's method gives the next approximation (x') as ...
x' = x -g(x)/g'(x) . . . . . where g'(x) is the derivative of g(x)
We have defined g(x) = x^3+x+3, the function we want the zero of. We have defined the iteration function to be f(x).
__
Additional comment
Modern graphing calculators not only make the iteration trivially simple, they also give a first approximation good to 2 or 3 decimal places in many cases.
find the value of x easy math question #3 please help
Answer: x =8
Step-by-step explanation:
-12 + 9x = 60 (the other angles are 60, 180 - (60 + 60) = 60)
9x = 72
x = 8
Answer:
x = 8°
Step-by-step explanation:
We know that sum of interior angles of a triangle is 180°, therefore;
(Angle 1) + (Angle 2) + (Angle 3) = 180°
(60)° + (60)° + (-12 + 9x)° = 180°
120° + (-12 + 9x) = 180°
108° + 9x° = 180°
9x = 180 - 108
9x = 72°
x = 72/9
x = 8°
Therefore the value of x is 8°.
Hope this helps!
HELP!!!! Which statement best describes an advantage of indirect democracy over
direct democracy?
A. It can better reflect the democratic principle of majority rule.
B. It can be more responsive to citizens' interests.
C. It can make decision making more efficient.
O D. It can help citizens feel more connected to government.
SUBMIT
Answer:
C. It can make decision making more efficient.
Step-by-step explanation:
An experiment to investigate the survival time in hours of an electronic component consists of placing the parts in a test cell and running them under elevated temperature conditions. Six samples were tested with the following resulting failure times (in hours): 34, 40, 46, 49, 61, 64. (a)Calculate the sample mean and sample standard deviation of the failure time.
Answer:
The sample mean of failure time was of 49 hours.
The standard deviation of the failure time was of 11.7 hours.
Step-by-step explanation:
Sample mean:
Sum of all values divided by the number of values. So
[tex]\overline{x} = \frac{34+40+46+49+61+64}{6} = 49[/tex]
The sample mean of failure time was of 49 hours.
Standard deviation:
Square root of the division between the sum of the differences squared betweene each value and the mean, divided by the sample size subtracted by 1. So
[tex]s = \sqrt{\frac{(34-49)^2+(40-49)^2+(46-49)^2+(49-49)^2+(61-49)^2+(64-49)^2}{5}} = 11.7[/tex]
The standard deviation of the failure time was of 11.7 hours.
Curtis used grapes, strawberries, and apples in a fruit salad. Use the cluster below to find the amount of each fruit used.
A 10 meter ladder was placed on an angle. The base of the ladder is 5 meters away from the
building along the ground.
Write an equation to determine the height, h, of the building.
Answer:
5^2 + h^2 = 10^2
Step-by-step explanation:
This is a clear example of the Pythagorean Theorem, a relation of all sides in a right triangle. The equation itself is a^2 + b^2 = c^2. By simply plugging in the given values into the triangle, you would get the answer.
Answer:
To determine the height we will use a² = b²+c²
(10m)²= (5m)²+(h)²
<=> 100m²=25m²+h²
<=> 100m²-25m²=75m²=h²
<=> √ 75m² = h = 8,660m
In a recent survey of 655 working Americans ages 25-34, the average weekly amount spent on lunch was 43.76 with standard deviation 2.67. The weekly amounts are approximately bell-shaped. (c) Between what two values will approximately 95% of the amounts be?
Answer:
Between 38.42 and 49.1.
Step-by-step explanation:
The Empirical Rule states that, for a normally distributed random variable:
Approximately 68% of the measures are within 1 standard deviation of the mean.
Approximately 95% of the measures are within 2 standard deviations of the mean.
Approximately 99.7% of the measures are within 3 standard deviations of the mean.
In this problem, we have that:
Mean of 43.76, standard deviation of 2.67.
Between what two values will approximately 95% of the amounts be?
By the Empirical Rule, within 2 standard deviations of the mean. So
43.76 - 2*2.67 = 38.42
43.76 + 2*2.67 = 49.1
Between 38.42 and 49.1.