Answer:
D
Step-by-step explanation:
Differentiate the function and set it to zero:
f'(x) = -10x + 13
0 = -10x + 13
x = 1.3 seconds
Plug the x value into f(x):
f(1.3) = -5(1.3)^2 + 13(1.3) + 6 = 14.45 meters
Calculate the surface area of a cylinder that is 12 mm tall and has a radius of 2 mm. Use 3.14 for π and just enter the number, not the unit.
Answer:
Below in bold.
Step-by-step explanation:
Surface area
= 2pi r h + 2 pi r^2
= 2 * 3.14 * 12 + 2* 3.14 * 2^2
= 100.48.
I need answer ASAP
No links please
Answer:
Step-by-step explanation:
let l be length of string.
Then 70/l=sin 40
l=70/sin 40 ≈108.9 ft
Help me please will give brainleist
Answer:
sound travels fastest in solids
Step-by-step explanation:
the particles are more close together therefore the sound can travel faster :D
Answer:
sound travels faster in solids than gases
Step-by-step explanation:
so we can see the bigger of a difference between air and a piece of glass. so "empty space" is out because the glass one is faster, the third option is a choice but sound can't travel in space so its not an op6
Two sets of data are shown.
Data Set A: 24, 11, 26, 14, 24, 14, 24, 11, 23
Data Sot B. 24, 19, 18, 16, 30, 27, 30, 12, 22
8
Choose the phrase that would make the statement true.
The mean of Data Set A is
the mean of Data Set B.
equal to
2 less than
4 less than
1 more than
3 more than
5 more than
1 less than
3 less than
5 less than
2 more than
4 more than
Answer:less than.
Step-by-step explanation: it less than something.
I don’t know how to do this problem if someone could help it would be much appreciated!
9 + 2 − 10 = 1 − 10
Step-by-step explanation:
9 + 2 − 10 = 1 − 10
11 - 10 = -9
1 = -9
Answer:
1 = -9
Step-by-step explanation:
First part: 9+2 = 11 - 10 =1
Second Part: 1 - 10 = -9
So basically you just get 1 = -9
Answer:
1 = -9
A migrating bird flies 539 miles in 11 hours. How many miles does it fly in 3 hours?
Select the correct answer from each drop-down menu.
Elena’s backyard is in the shape of a rectangle. She created a triangular-shaped flower bed (shown as the shaded region) to plant flowers in.
The area of the triangular flower bed is square feet. The area of her backyard that does not include the flower bed is square feet.
Answer:
b
Step-by-step explanation:
iS THE ANSWER
Area of background without flower bed = 575 feet²
What is mean by Triangle?A triangle is a three sided polygon, which has three vertices and three angles which has the sum 180 degrees.
Given that:
Length of rectangle ground = 35 feet
Width of rectangle ground = 20 feet
Height of triangle bed = 10 feet
Base of triangle bed = 25 feet
Now, We can formulate;
Area of background without flower bed = Area of rectangle - Area of triangle
Hence, Area of background without flower bed = [l x b] - (1/2)(b)(h)
Area of background without flower bed = [35 x 20] - (1/2)(25)(10)
Area of background without flower bed = 700 - 125
Area of background without flower bed = 575 feet²
Thus, Area of background without flower bed = 575 feet²
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A satellite is to be put into an elliptical orbit around a moon as shown below. A vertical ellipse is shown surrounding a spherical object labeled, moon. The moon is a sphere with radius of 1000 km. Determine an equation for the ellipse if the distance of the satellite from the surface of the moon varies from 953 km to 466 km.
Answer:
The correct equation will be "[tex]\frac{x^2}{(1466)^2} +\frac{y^2}{(1953)^2} =1[/tex]".
Step-by-step explanation:
In the above question, the figure is missing. Please find below the attachment of the figure.
According to the question,
Radius of a moon,
r = 1000 km
The max. distance from moon's surface to the satellite,
a = 953 km
The min. distance from moon's surface to the satellite,
b = 466 km
Now,
As per the question or the diagram,
⇒ [tex]a_1=a+r[/tex]
[tex]=953+1000[/tex]
[tex]=1953 \ km[/tex]
⇒ [tex]b_1=b+r[/tex]
[tex]=466+1000[/tex]
[tex]=1466 \ km[/tex]
hence,
The equation of ellipse will be:
⇒ [tex]\frac{x^2}{b_1^2} +\frac{y^2}{a_1^2} =1[/tex]
On substituting all the values, we get
⇒ [tex]\frac{x^2}{(1466)^2} +\frac{y^2}{(1953)^2} =1[/tex]
Janessa is playing a board game with two friends. Using a single die, one friend rolled a four, and the other friend rolled a three. Janessa needs to roll a number higher than both friends in order to win the game, and she wants to calculate her probability of winning.
Is the probability of Janessa winning an independent event or dependent event? Why?
O) Her probability of winning is an independent event because it depends on the results of her friends’ rolls.
O) Her probability of winning a dependent event because it does not depend on the results of her friends’ rolls.
O) Her probability of winning is an independent event because it does not depend on the results of her friends’ rolls.
O) Her probability of winning is a dependent event because it depends on the results of her friends’ rolls.
If Mary Alice buys the car for $35,000 and pays 20% down, how much will she finance? If she finances this balance for 6 years at the special rate of 0.9% add-on interest, how much will her monthly payments be? What is the total cost of the car if she finances it
Answer:monthly is 598.90 total is 43120
Step-by-step explanation:
Find the maximum value |r| and any zeros of r. r=20-20 sin theta
Answer: r=0
Step-by-step explanation: Hope this help :D
What is the probability that a point randomly chosen in the large triangle is also in Region A?
The grid ranges from 0 to 16 on the horizontal axis and from 0 to 12 on the vertical axis. A polygon with vertices at begin ordered pair 0 comma 0 end ordered pair comma begin ordered pair 0 comma 10 end ordered pair and begin ordered pair 14 comma 0 end ordered pair. The polygon is subdivided into 2 regions. Region A is a trapezoid with vertices at begin ordered pair 0 comma 0 end ordered pair comma begin ordered pair 0 comma 10 end ordered pair comma begin ordered pair 7 comma 5 end ordered pair and begin ordered pair 7 comma 0 end ordered pair. Region B is a triangle with vertices at begin ordered pair 7 comma 0 end ordered pair comma begin ordered pair 7 comma 5 end ordered pair and begin ordered pair 14 comma 0 end ordered pair.
37.5%
62.5%
70%
75%
Answer:
75
Step-by-step explanation:
The probability that a point randomly chosen in the large triangle is also in Region A will be 11/36.
What is probability?Probability of an event is the ratio of number of favorable outcomes to the total number of outcomes.
Probability is a measure of how likely an event is going to happen.
Given is to find the probability that a point randomly chosen in the large triangle is also in Region A.
We can find the area of region A as -
Area{A} = A{Rectangle} + A{Right triangle}
Area{A} = (Length x Breadth) + (1/2 x base x height)
Area{A} = (5 x 2) + (1/2 x 1 x 2)
Area{A} = 10 + 1
Area{A} = 11 square units
Total area of the region {A + B} as -
Total Area{A + B} = 11 + (1/2 x 10 x 5)
Total Area{A + B} = 11 + 25
Total Area{A + B} = 36 square units
The probability that a point randomly chosen in the large triangle is also in Region A will be -
P{A} = (Area{A}/Total Area{A + B})
P(A) = 11/36
Therefore, the probability that a point randomly chosen in the large triangle is also in Region A will be 11/36.
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HELP ME I DONT KNOW HOW TO DO IT
If the wholesale price of an item is $250 and the markup is 20%, find the retail price of the item.
Answer:
250
Step-by-step explanation:
Answer:
300 i think
Step-by-step explanation:
Mind helping a friend
will mark brianlist
Answer:
b, d, f
Step-by-step explanation:
pls help me i will make u brainest
Lara is playing a video game where she hunts for treasure, like these gems:
A sapphire is worth 5 gold coins, and a ruby is worth 8 gold coins.
On her last hunt, Lara found 17 gems, all either rubies or sapphires, and sold them for 100 coins. How many sapphires did she find?
Answer:
12 sapphires
Step-by-step explanation:
Let's call the number of sapphires x. This means the number of rubies is the total number of gems minus x, or 17-x.
# of Sapphires: x
# of Rubies:17-x
A sapphire is worth 5 (gold coins) each, and a ruby is worth 8.
We also know the total amount of money is 100 coins, so
5*x+8*(17-x)=100
5x+136-8x=100
-3x=-36
x=12
Remember:
# of Sapphires: x
# of Rubies:17-x
...so Lara found 12 sapphires and 17-12=5 rubies.
Solve for x for the linear pairs.
Answer:
X = 13
Step-by-step explanation:
Since this is a linear pair, it equals to 180 degrees.
7x + 37 + 4x = 180
11x + 37 = 180
-37 -37
11x = 143
11x/11 = 143/11
x = 13
Good luck on your form!
Joe solved this problem on a math test. 5/6 - 1/4 = 7/8
Answer:
This is incorrect, the correct answer is 7/12
Step-by-step explanation:
Complete the table and estimate the limit
Answer:
[tex]\lim_{x \to 0} \frac{\sqrt{x+5}-\sqrt{5} }{x} =\frac{\sqrt{5}}{10}[/tex]
Step-by-step explanation:
If x=-0.1, then f(x)=0.2247361538
If x=-0.01, then f(x)=0.2237187131
If x=-0.001, then f(x)=0.2236179792
If x=0.001, then f(x)=0.2235956185
If x=0.01, then f(x)=0.223495106
If x=0.1, then f(x)=0.2224998063
We can see that as x approaches 0, we see that f(x) gets closer to √5/10
Therefore, [tex]\lim_{x \to 0} \frac{\sqrt{x+5}-\sqrt{5} }{x} =\frac{\sqrt{5}}{10}[/tex]
ILL MARK BRAINIEST IF YOU CAN DO THIS RIGHT!!!
En una fábrica automovilística una máquina pone en total 15,000 tornillos en las 8 horas de jornada laboral funcionando de forma ininterrumpida. ¿Cuántos tornillos pondrá en 3 horas?
Answer:
120
Step-by-step explanation:
Which equation has a solution of x = 9?
O 11 - 2x = 29
O 3x + 2 = 25
O4 + 5x = 18
O 2x - 3 = 15
Jadan has a drawer of different colored t-shirts. He has 4 white t-shirts, 5 black t-shirts, 3 red t-shirts and 2 blue t-shirts. He is going out of town and is in need of 2 t-shirts. What is the probability that he will randomly choose a white t-shirt without replacement and then choose a blue t-shirt?
Answer:
It's a lower probability
Because he needs to take from white and black
Answer:
it would be a lower probibitity
Step-by-step explanation:
4.
You randomly select three marbles from jar that contains 23 black
marbles, 32 blue marbles and 8 white marbles.
What is the probability that the first marble is blue, the second marble
is black and the last marble is not blue if you do not replace the first
and second marbles? Enter your answer as a decimal rounded to the
nearest thousandth.
Marble, blue marble first time, red marbles second time, white marble
Answer: 0.093 chance
Step-by-step explanation:
23 black + 32 blue + 8 white = 63 total
FIRST MARBLE IS BLUE:
32/63
SECOND MARBLE IS BLACK:
23/62
LAST MARBLE IS NOT BLUE:
30/61
MATH:
32/63*23/62*31/61 = 0.093
sorry if it’s wrong but I think it’s right
Answer:
.093
Step-by-step explanation:
There are 63 marbles in the jar
P(pick a blue) = 32/63
Since you are not replacing that marble, so there are 62 marbles in the jar, 31 blue, 23 black, 8 white
P(pick a black) = 23/62
Now there are 61 marbles in the jar. 22 black, 31 blue and 8 white
P(not a blue) = 30/61
P(blue, black, not blue) = (32/63)(23/62)(30/61)
= .093
Find the mean, median, and mode(s) of the data with and without the outlier.
45, 52, 17, 63, 57, 42, 54, 58
Answer:
Mean = 48.5, Median = 53, Mode = nothing, Outlier = 17
Step-by-step explanation:
Mean: Add all the numbers (388) then divide by how many numbers (8) are there. (= 48.5)
Median: Is the middle number () so you have to order them from least to greatest (17, 42, 45, 52, 54, 57, 58, 63) and then just keep marking them off left, right, left, right... until you get to the middle. But since there are two numbers (52, 54) you have to add them (106) then you divide by 2 (53).
Mode: Is the number that shows up the most. In this case none of them do.
Outlier: The number that is farthest from the other numbers (17).
The mean, median, and mode(s) of the data Without outlier Mean is 51
Median is 53 and Mode is None
To find the mean, median, and mode(s) of the data, we can start by arranging the numbers in order from smallest to largest:
17, 42, 45, 52, 54, 57, 58, 63
The mean is the sum of all the numbers divided by the total number of numbers.
If we remove the outlier (17), the data set becomes:
42, 45, 52, 54, 57, 58, 63
Mean:
Mean = (42 + 45 + 52 + 54 + 57 + 58 + 63) / 7 = 51
Median:
Median = (52 + 54) / 2 = 53
There is no mode in this set since no number appears more than once.
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Riley is saving up to buy a new television. She needs a total of $1,239.02. Riley has saved $200.58 already and earns $79.88 per
week at her job. How many weeks does Riley need to work to save enough money to buy the new television?
A.12
В.14
C.13
D.11
Answer:
13
Step-by-step explanation:
Please mark brainliest
i need help on this lol
Answer:
D
Step-by-step explanation:
Its the lowest number so it's that one
(brainliest pls?)
A survey of 300 people found that 30 of them likes hip-hop music. What percent of the people in the survey likes hip-hop music? Right answer gets brainliest!!
Answer:
10%
Step-by-step explanation:
30/300 people like hip-hop
So, 1/10 or 10% like hip-hop
Answer: 10%
Step-by-step explanation: 30% out of 300% is like 10% out 100%
STAY OFF MY QUESTIONS OBI-WAN!!!
number 3 is the answer for number 1
number 2 is the answer for number 2
Plz plz help 10pts
what is the answer
Answer:
$8030
Step-by-step explanation:
Answer:
Step-by-step explanation:
tuition for one year = 9,890
tuition for 2 years = 9,890 x 2 = 19,780
her savings:
8,350 + 3,400 = 11,750
what she needs?:
19,780
-11,750
= 8,030
so she needs 8,030
How many combinations of 3 playing cards (from a 52-card deck) exist?
Answer:
22,100
Step-by-step explanation:
pls trust me i just took the test
The number of combination of 3 playing cards from 52 card deck is 22100.
What is Combination?A combination is a mathematical technique that determines the number of possible arrangements in a collection of items where the order of the selection does not matter. In combinations, you can select the items in any order.
Here, total cards = 52
cards to be selected = 3
So, total possible combination = ⁵²C₃
= (52 X 51 X 50) / (3 X 2 X 1)
= 22100
Thus, the number of combination of 3 playing cards from 52 card deck is 22100.
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