how can you find the vertex of a parabola if you know it's focus and directrix? in my equation, the focus is (6,4) and the directrix is y=-2
Answer:
The vertex would be (6,1)
Step-by-step explanation:
The vertex is the midway between the focus and the directrix. The X of the vertex would be the same but to get the Y of the vertex you would need to take the average of the Y values. (6, 4 + (-2)/2) (6,1)
There is a closed carton of eggs in Mai's refrigerator. The carton contains e eggs and it can hold 12 eggs. What does the inequality e<12 mean in this context?
Answer:
That the number of eggs (e) in the carton is less than 12
Step-by-step explanation:
Two of the vertices of a rectangle are plotted on the coordinate grid below.
Option A is the correct answer.
The figure below shows a shaded circular region inside a larger circle:
r3 inches
R5 inches
What is the probability that a point chosen inside the larger circle is not in the shaded region?
O 24%
O 36%
O 50%
O 64%
Answer:
Probability is 64%
Step-by-step explanation:
Given the smaller circle which is shaded whose radius is denoted by r and the largest circle whose radius is denoted by R
r = 3 inches
R = 5 inches
Step 1 : To calculate the area of shaded region.
Area of circle =
⇒ Area =
= square inches
Step 2 : To calculate the area of larger circle.
Area of circle =
⇒ Area =
= square inches
Step 3 : Calculate the probability that a point chosen from shaded region
Probability = Area of shaded region/Area of larger circle.
= /
=
= 0.36 = 36%
Step 4 : calculate the probability that a point chosen inside the larger circle is not in shaded region.
Probability = 1 - 0.36
= 0.64 = 64%
Hence the probability is 64%
Step-by-step explanation:
How do I add a percentage (%) tip to a total of a bill? (Ex - Total : 3.00 with a %18 tip)
To calculate a gratuity or tip on any calculator it is a simple multiplication. In general, the tip amount is the cost times 0.xx and your total including tip, is the cost times 1.xx where xx = the percent you want to leave. If you want to leave a 20% tip, multiply the cost by 0.20 to get the tip amount or multiply the cost by 1.20 to get the total including tip. If you want to leave a 18% tip, multiply the cost by 0.18 to get the tip amount or multiply the cost by 1.18 to get the total including tip.
Let's say you and a friend had dinner that cost $26.50. You had good service and want to leave an 18% gratuity. Put the percentage in decimal form (0.18) then multiply the cost by this number.
26.50 * 0.18 = 4.77. So your tip is $4.77.
An easy way to get the total amount, dinner plus tip, is to multiply the total by 1.18. 26.50 * 1.18 = 31.27. This works mathematically because you want to know your original cost plus the tip which is written as 26.50 + (26.50 * 0.18) = ? Factoring out the 26.50 from this equation you get 26.50 * (1 + 0.18) = 26.50 * 1.18.
How to calculate a tip in your head
You can get a good approximation of a tip by doing it in your head this way.
You can find 10% of your bill by moving the decimal one place to the left. If 26.50 is 100% then 10% is 2.65. Since 20% is 2 times 10%, 20% of the bill is 2.65 + 2.65 = 5.30. Now you know the tip you could leave ranging from poor to good, $2.65 to $5.30. To find 15%, halfway in between, we know 15% is 10% plus 1/2 of 10% (5%). 2.65 plus about 1.30 is 3.95.
Now you have
10% is 2.65 - by moving decimal 1 place left
15% is 3.95 - 10% + 1/2 of 10%
20% is 5.30 - 10% * 2
This is plenty of information to make a good guess at the tip amount you should leave. If you decide on about 18%, 4.50 to 5.00 would be a safe guess.
Hope this helps!!! Please mark Brainliest because no matter what you are the Brainliest of all!
Answer:
put to percentage as a decimal (ex. 0.18) then you add that to the total amount
A pentagonal pyramid holds 30 cubic cm of sand. The area of the pentagon equals 9 square cm. Find the pyramid's height.
Answer:
it should be 3.3 if rounded
Step-by-step explanation:
The math department is putting together an order for new calculators. The students are asked what model and color they prefer. Which statement about the students preferences is true?
A. More students prefer silver Model 55 calculators than silver Model 77 calculators.
B. More students prefer Model 66 calculators than Model 55 calculators.
C. More students prefer black calculators than silver calculators.
D. The fewest students prefer silver Model 66 calculators.
Answer:
D
Step-by-step explanation:
Answer:a
Step-by-step explanation:
Which formulas can you use to calculate the volume of a rectangular prism? Check all that apply.
V = one-half b h
V = 2l + 2w
V = Bh
V = lw
V = lwh
V = s2
The surface of a table to be built will be in the shape shown below. The distance from the center of the shape to the center of each side is 8.7 inches and the length of each side is 10 inches.
A hexagon labeled ABCDEF is shown will all 6 sides equal in length. ED is labeled as 10 inches. A perpendicular is drawn from the center of the hexagon to the side ED. This perpendicular is labeled as 8.7 inches.
Part A: Describe how you can decompose this shape into triangles. (2 points)
Part B: What would be the area of each triangle? Show every step of your work. (5 points)
Part C: Using your answers above, determine the area of the table's surface. Show every step of your work. (3 points)
Please answer Part A, Part B, And Part C! Will give brainliest
Answer:I believe the answer is Part B:What would be the area of each triangle? Show every step of your work.
The base of a rectangular pyramid has dimensions 3 feet by 9 feet. The height of the pyramid is 11 feet.
What is the volume of the rectangular pyramid in cubic feet? Answer below, no units.
Answer:
99
Step-by-step explanation:
1. rectangular pyramid formula:
2. V=lwh/3
3. 99 = (3)(9)(11)/3
Only answer if you know the correct answer! Thanks! :)
Answer:
a and c
Step-by-step explanation:
PLZZZZZZZZZZZZZZZZ Which fraction is equivalent to negative 7 over 8?
Answer:
7 over negative 8.
Step-by-step explanation:
How many more vertices does a rectangular prism have, compared to triangular pyramid?
rectangular prism and triangular pyramid
A. 6
B. 4
C. 5
D. 7
What is
(n+8) + (n−12)
Answer:
2n - 4.
Step-by-step explanation:
(n+8) + (n−12)
= n + 8 + n - 12
= n + n + 8 - 12
= 2n - 4.
Answer:
2n-4
Step-by-step explanation:
add like terms. n+n=2n 8+-12=-4
2n-4
Label the tick marks
Can anyone help out with this?
Answer:
Step-by-step explanation:
Maggie wants to join a tennis club. City Tennis Center charges $150 for the initial membership and $30 each month. Urban Tennis Club charges $50 for the initial membership and $40 each month.
Maggie will join a tennis club for 1 year. Which club should Maggie join if she wants to spend the least amount of money? Use mathematics to explain how you determined your answer.
Answer:
City
Step-by-step explanation:
Cost for 12 months
City
150 + (30 * 12) = 510
Urban
50 + (40 * 12) = 530
City is $20 less for the year
20 points to whoever gets this right <3 ( need a equation )
Nabhitha buys cookies and onions at the store.
She pays a total of $60.39.
She pays a total of $4.79 for the cookies.
She buys 8 bags of onions that each cost the same amount.
Write and solve an equation which can be used to determine xx, how much each bag of onions costs.
Answer:
8x+4.79=60.39
Step-by-step explanation:
If you want this solved,
60.39-4.79 = 55.6
55.6/8 =6.95
One bag of onions = $6.95
(just for extra because I'm tired)
A restaurant customer left $1.40 as a tip. The tax was 5% and the tip was 20% of the cost including tax. a. Which information is not needed to compute the bill after tax and tip? b. What was the total bill?
Answer:
Step-by-step explanation:
(10 x 100) x = 0.70. (10÷ 10) 100 ÷ 10. = 1/10 x = 0.70. X 0.70 x 10. X= 7.00
Please help me fast!
Illl give brainly
Answer:
2,050 = 2.05L and 2,050mL
7,002 = 7.002L and 7,001mL
10,050 = 10.05L and 10,050mL
Step-by-step explanation:
Answer:
2,050 = 2.05L and 2,050mL
7,002 = 7.002L and 7,001mL
10,050 = 10.05L and 10,050mL
Step-by-step explanation:
Which data set could represent the scores shown in the histogram?
Answer:
Step-by-step explanation:
B, because judging the graph it looks like the numbers are the closest to the data shown.
need help fast! Thank you!
Answer:
20, 12, and 16
Step-by-step explanation:
So we know that y=4x
This basically means y=4*x
So we can plug the values for x shown on the table below to find y.
when x=5:
y=4*5
=
y=20
So for the first fill in box, its 20
Next is x=3:
y=4*3
=
12
So for the next fill in box it is 12.
Finally we have x=4:
y=4*4
=
y=16
So the for the finally box it is 16.
Hope this helps!
Answer:
5 - 20
3 - 12
4 - 16
Step-by-step explanation:
Hope this helps
ANSWER FAST!!!! The school bus travels at an average speed of 30 miles an hour in the morning because of the traffic. Diego's Home is 3 miles away from the school. If he got picked up by the bus at his house at 7:12am, what time did he arrive at the school? ANSWER plz
Laura bought 2 CDs that were each the same price. Including sales tax, she paid a total of $30.20. Each CD had a tax of $1.20. What was the price of each CD before tax?
Answer:
$13.90
Step-by-step explanation:
1.20 *1.20= $2.40 tax
30.20-2.40= $27.8 (both cds)
27.8/2 = $13.90 per CD
Select all ratios equivalent to 20:4 A. 8:1 B. 10:2 C. 15:3
Answer:
b 10:2 ,, c 15:3
Step-by-step explanation:
20:4 by dividing 4 from both sides you get the ratio
5 :1
so simplify the other ratios and find one that equals this one
A is already in simplest form 8:1
so it's refused
B 10:2 by dividing 2 from both sides you get the ratio 5 :1
C 15:3 by dividing 3 from both sides you get the ratio 5 :1
so both B and C are correct answers
Hope this helped! :)
Can you please help me out
Answer:
it would be 61 tiles i think
Step-by-step explanation:
Simplify |-33|
A.
0
B.
-33
C.
1
D.
33
Answer:
D. 33 will be your answer
Step-by-step explanation:
hope it helps...
Answer:
D. 33
Step-by-step explanation:
The two lines closing -33 in are the absolute value lines. Absolute value means how far is that number from 0. Since distance HAS to be positive, the answer is always the number inside the two lines, but positive. No matter if it starts off as negative or positive.
Question down below. Answer for points
Answer:
The base is 9 units
Step-by-step explanation: 9 x 15 = 135 square units
Answer:I think you need to divide 135 by something I don’t know
Step-by-step explanation:
helppppp meeeeee:))))))))))))))))))))))))
Answer:yes
Step-by-step explanation:
is so yes so if the 50 it was the 40 so then they it yes
Answer:
19.5°
Step-by-step explanation:
The sum of any 3 angles of a triangle is 180.
That being so 33.5 + 127 + F = 180.
33.5 +127 + F - 33.5 = 180 - 33.5
127 + F = 146.5
127 + F - 127 = 146.5 - 127
F = 19.5
Help me answer this nonsensical question!!!!!
Answer:
D
Step-by-step explanation:
(if he gathers 4 coins each month you will need the variable by it. he was given 20 coins so it is added on to how many coins he has. plus it would be greater than because the question asked when he will have MORE than 50 coins.)