Answers
Answer:
56π
Step-by-step explanation:
1. Approach
To find the radius of a circle, use the formula;
[tex]A = r^{2}[/tex]π
To find the area of the shaded region, find the area of the larger circle, and then subtract the area of the smaller circle from it.
It is given that the larger circle has a radius of 9, and the smaller has a radius of 5.
2. Area of the larger circle
[tex]A = r^{2}[/tex]π
Substitute in known value (use 3.14 for π)
[tex]A = (9)^{2} * 3.14[/tex]
A = 254.47
3. Area of the smaller circle
[tex]A = r^{2}[/tex]π
Substitute in known value (use 3.14 for π)
[tex]A = (5)^{2} * 3.14[/tex]
A = 78.54
4. Area of the shaded region
Subtract the area of the smaller circle from the area of the larger circle;
254.47 - 78.54 = 175.93
~ 56π
Related Questions
are 7x and 3+ like terms that you can combine?
Answers
Answer:
no
Step-by-step explanation:
Because the term behind the 7 is a x, but the 3 only has a plus sign. If both numbers had a x, then yes
Hope this Helps!!!
Are these triangles similar?
Answers
Answer:Similar yes, AA similarity
Step-by-step explanation
what is 246 588 rounded to the ten thousands place
Answers
9514 1404 393
Answer:
250,000
Step-by-step explanation:
The thousands digit is more than 4, so the ten-thousands digit is increased by 1 before digits to its right are replaced by zeros. The rounded number is ...
250,000
3. Frank is considering two cell phone plans. The first company charges $120 for the
phone and $30 per month for the calling plan that Juan wants. The second company
charges $40 for the same phone but charges $45 per month for the calling plan that
Juan wants. After how many months would the total cost of the two plans be the same?
Representations:
Equations:
Answers
Answer:
5.333 months
Step-by-step explanation:
Company A: 120+30x
Company B: 40+ 45x
120+30x=40+45x
80=15x
80/15=x
5.33333=x
Classify the triangles based on whether they are right triangles.?
Answers
Answer:
The 1st, 4th, and 5th triangles are right triangles
Step-by-step explanation:
Right triangles always have a key characteristic. They all have an angle of 90 degrees. Keep an eye out for that.
Any point on the parabola can be labeled (x,y) as shown.
1. What are the distances from the point (x,y)(x,y) to the focus of the parabola and the directrix?
Select two answers.
distance to the focus: √(x+3)2+(y−3)2
distance to the directrix: |y−4|
distance to the directrix: |x−4|
distance to the focus: √(x−2)2+(y+3)2
distance to the focus: √(x+3)2+(y−2)2
distance to the directrix: |y+4|
2. What is the correct standard form of the equation of the parabola?
Answers
Answer:
Part A)
2nd and 5th choice.
Part B)
[tex]\displaystyle y=-\frac{1}{4}x^2-\frac{3}{2}x+\frac{3}{4}[/tex]
Step-by-step explanation:
For the given parabola, our focus is (-3, 2), and our directrix is given by y = 4.
Part A)
We are given a point (x, y) on the parabola.
Since our directrix is an equation of y, the distance from (x, y) to the directrix will simply be the absolute value of the difference in y-values. So:
[tex]d_1=|y-4|=|4-y|[/tex]
Recall the distance formula:
[tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2[/tex]
Our distance from (x, y) to the focus (-3, 2) can be determined using the distance formula. Let (x, y) be (x₂, y₂) and let our focus (-3, 2) be (x₁, y₁). Therefore:
[tex]d_2=\sqrt{(x-(-3))^2+(y-2)^2}=\sqrt{(x+3)^2+(y-2)^2[/tex]
Hence, for Part A, our answers are the 2nd and 5th choices.
Part B)
Recall that by the definition of a parabola, any point (x, y) on it is equidistant to the directrix and focus. Hence:
[tex]\sqrt{(x+3)^2+(y-2)^2}=|y-4|[/tex]
Solve for y. Square both sides. We may remove the absolute value since anything squared is positive:
[tex](x+3)^2+(y-2)^2=(y-4)^2[/tex]
Square:
[tex]x^2+6x+9+y^2-4y+4=y^2-8y+16[/tex]
Rearrange:
[tex](x^2+6x+13)+(-16)=(y^2-y^2)+(-8y+4y)[/tex]
Combine like terms:
[tex]x^2+6x-3=-4y[/tex]
Divide both sides by -4. Hence, our equation is:
[tex]\displaystyle y=-\frac{1}{4}x^2-\frac{3}{2}x+\frac{3}{4}[/tex]
Heyo! :D
Distance to the directrix is |y - 4|.
Distance to the focus is [tex]\sqrt{(x+3)^2+(y-2)^2}[/tex].
Hope this helps! If so, please lmk! Tysm and good luck!
20
X + 60°
X=
20
40
80
Answers
i think its C because don't you have to add the numbers together
The answer is 40 degrees :]
Please help I’m so confused ;(
Answers
Answer:
Step-by-step explanation:
Work out the volume of this sphere.
Give your answer to 1 decimal place.
4.7 cm
Answers
Answer:
434.9 cm³
Step-by-step explanation:
Volume of a sphere: 4/3πr³
Substitute the information to find the volume.
4/3π(4.7)³ = 434.9
Find the slope of the line passing through points -2, 2 and 2, 0
Answers
We can find the slope by using the slope formula. Also know rise over run.
[tex] \large \bold{m = \frac{rise}{run} }[/tex]
[tex]m = \frac{2 - 0}{ - 2 - 2} \\ m = \frac{2}{ - 4} \\ m = - \frac{1}{2} [/tex]
From the slope-intercept y = mx+b.
[tex] \large \bold {m = slope } \\ \large \bold {b = y - intercept }[/tex]
Answer[tex] \large \boxed { - \frac{1}{2} }[/tex]
Answer:
-1/2
Step-by-step explanation:
Going from (-2, 2) to (2, 0), x (the run) increases by 4 and y (the rise) decreases by 2. Thus, the slope of this line is m = rise / run = -2/4 = -1/2.
help please ASAP super hard
Answers
Answer:
B.
Step-by-step explanation:
PLZ HELP!
Carmen enters a painting in an art contest. The contest rules say that all paintings must be rectangular, with an area no greater than 3,003.84 cm2. Carmen's painting wins second prize in the contest. The painting that wins first prize has an area that is 1.6 times less than the greatest area the rules allow.
What is the area of the first-prize painting?
Answers
can somone answer this please
Answers
Answer:
4
7
6
9
Step-by-step explanation:
plz brainliestt
Which ordered pair is in the solution set of y> 2x + 3?
a.(1,4)
b.(3,2)
c.(0,5)
d.(0,0)
Answers
Hope this helps
Can u pls help me with this question
Answers
Answer:
21 is the answer your welcome
james is in charge of the decorations. he hs a total budget of $50 to spend for all of the decorations. james spends $20 on one banner and would like to buy balloons that cost $2 each with the rest of the money. Write an equation to represent the situation.
How many balloons can james buy?
Answers
His budget (amount of money he can spend) is $50. If he spent $20 on the banner, that means he has $30 left. He wants to spend the rest on balloons $2 each. Simply- 30 divided by 2 which is 15
Which is greater, 76% or 0.67?
Answers
Answer:
76%
Step-by-step explanation:
76% is 0.76
So it's is greater than 0.67
76%>0.67
Mario's plumbing service
Charges $40 to make a house
Call plus $25 an hour.
y=40+25h
Fill in the chart
Answers
Answer:
So, hour 0 and charge is 0. hour 1 is 25, hour 2 is 50, hour 3 is 75, hour 4 is 100 and hour 5 is 125
Step-by-step explanation:
For every hour, add 25 in each box.
Tatiana is buying b number of books and m number of magazines at the book fair. The books cost $4 each and the magazines cost $2 each. Tatiana's total purchase can be shown with this expression: 4b+2m. Which expression is equivalent to 4b + 2m?
A) 6bm
B) 2(2b+2m)
C) 2(2b+ m)
D) 6(b+m)
Answers
Answer:
d
Step-by-step explanation:
solve 6 (3x/2-4) =30
Answers
[tex]x = - \frac{10}{3} [/tex]
EXPLANATION[tex] - 9x = 30[/tex]
[tex]9x = - 30[/tex]
[tex]x = - \frac{10}{3} [/tex]
HopeItHelps you
could you please help me if you know how to do this
Answers
Answer:
In the first one, 4 is multiplied by c. In the second one, 1/4 is multiplied by c.
Step-by-step explanation:
Normally a chef uses 14 ounces to make chocolate chip cookies but he started using 20.44 ounces instead he should advertise the cookies as having percent more chocolate
Answers
(20.44-14)/14
8a-9÷3 if a=7/8
its algebra i need help
Answers
Answer:
4
Step-by-step explanation:
Plug 7/8 into a.
8(7/8)-9/3 Multiply.
7-9/3 Divide.
7-3 Subtract.
4
Hope this helps!! Have a great day! (｡･∀･)ﾉﾞ
write an expression that is equivalent to 3/4 a + 2/3 - 1/2 a - 1/3 + 1/2 a
Answers
Maria makes a fruit salad.
The table shows the amounts of different kinds of fruit that she uses.
Kind of Fruit Amount
Grapes 323 cups
Melon 214 cups
Pineapple 234 cups
Strawberries ?
The amount of strawberries that Maria uses is 38 times the amount of the other fruits combined.
How many cups of strawberries does Maria use?
Answers
Answer:
If my calculations are correct it would be 6,168 cups of strawberries
Step-by-step explanation:
If it’s 8 times the amount of them combined then you add all of the other fruit together and then multiply by 8 giving you:
323+214+234=771
771*8=6,168 cups of strawberries.
Only in math would someone need that much fruit
The plastic cylinder has a diameter of 2 cm. There is a rectangular 0.6 cm square prism through the middle of the cylinder, extending from the top to the bottom. The height of the cylinder is 6 cm. Find the volume of the cylinder without the prism.
Answers
Answer:
73.2 cm³
Step-by-step explanation:
The volume of the cylinder without the prism is V" = volume of cylinder, V' - volume of rectangular prism, V
Volume of cylinder = πr²h where r = radius of cylinder = 2 cm and h = height of cylinder = 6 cm.
So, V = πr²h
= π(2 cm)²(6 cm)
= π × 4 cm² × 6 cm
= 24π cm³
= 75.4 cm³
V = volume of rectangular prism = Area of 0.6 cm square × height = L²h where L = 0.6 cm and h = height of rectangular prism = 6 cm.
So, V = L²h = (0.6 cm)² × 6 cm = 2.16 cm³
volume of the cylinder without the prism is V" = V' - V
= 75.4 cm³ - 2.16 cm³
= 73.24 cm³
≅ 73.2 cm³
Answer:
Not an answer
Step-by-step explanation:
what does y equal?......
Answers
Answer:
37
Step-by-step explanation:
Plss which one??
Will mark brainlist
Answers
Answer: the 2nd one maybe
The fence around a circular garden is 18 feet long. What is the area of the garden to the nearest square foot? Use 3.14 for pi.
____square feet
Answers
Answer:
26
Show Your Work:
Answer:
26 sq.ft.
Step-by-step explanation:
i did the diagnostic
The sum of 5 times a number and 3 is the same as the difference of the number and 9. Find the number
Answers
Answer:
let number be n
by question
(5n+3)=(n-9)
5n-n=-9-3
4n=-12
n=-12/4=-3
required no. is -3.