Answers
Answer:
C. 9
Step-by-step explanation:
y = -4x^2 + 2kx
subtitute 3:
y = -4(9)^2 + 2k(9)
y = -4(81) + 18k
let y = 0
=> 0 = -324 + 18k
=> k = 324/18 = 9
this is my calculations hope it helps
Related Questions
A pole that is 3.2 meters tall casts a shadow that is 1.18 meters long. At the same time, a nearby tower casts a shadow that is 42.25 meters long. How tall is the tower? Round answer to the nearest tenth.
Answers
Answer:
114.6 meters tall
Step-by-step explanation:
If you draw out the poles and shadows, you can connect the end of the shadow to the top of the pole. This creates two traingles that are proportional. This allows you to set up the proportion:
3.2 m / 1.18 m = x / 42.25 m
You can then cross multiple and get:
1.18x = (3.2)(42.25)
1.18x = 135.2
You can then divide and solve for x.
x = 114.6 m
X is a variable for the height of the taller pole, so you can simply add units and thats the height.
please help im stuck on this
Answers
Answer:
7m
Step-by-step explanation:
The length is 3.5 cm
Since teh scale is 1 cm = 2m
3.5 cm = 2(3.5) m
3.5 cm = 7 m
Therefore our answer is 7m
Answer:
7m
Step-by-step explanation:
i multiplied both sides by 2
because
1cm = 2m so 2 divided by 1 is 2
2.5 times 2 is 5m
3.5 times 2 is 7m
actual area is
5 times 7 which is =
35m^2
help me!
[tex]\sqrt{84} +\sqrt{84} =?[/tex]
Answers
Answer:
18.4
Step-by-step explanation:
Well the square root of 84 isn't an exact answer.
But when rounded it equals to approximately 9.16 or rounded even more 9.2 at most.
So 9.2 + 9.2 = 18.4.
So the answer is ≈ 18.4
Have a good day or night wherever you are. May GOD Bless You!!
Answer:
=> 18.3303028 or 18.4
Step-by-step explanation:
=> √84 +√84 {√84 = 9.16515139 or 9.2}
=> 18.3303028 or 18.4
Write (8 x 10) + (6 x 1) +(2 x 0.1) + (7 x 0.001) with words.
Answers
Answer:
Eight times ten plus six times one plus two times one-tenth plus seven times one-thousandth.
Step-by-step explanation:
(8 x 10) = eight times ten
(6 x 1) = six times one
(2 x 0.1) = two times one-tenth
(7 x 0.001) = seven times one-thousandth
I am not always the best with the equations to words stuff, so please comment if I am wrong!
what is 44237 divdied by 31 asap
Answers
Answer:
1427
Step-by-step explanation:
In circle G with m \angle FGH= 42m∠FGH=42 and FG=6FG=6 units find area of sector FGH. Round to the nearest hundredth.
Answers
The area of the sector with a radius of 6units and an angle of 4 degrees rounded to the nearest hundredth is 13.19 square units
How to find the area of a sector?The sector is a part of a circle with an angle subtended at the centre. The formula for calculating the area of a sector is expressed as:
A = r²Ф/2
where:
r is the radius
Ф is the subtended angle
Given the following
r = 6 units
Ф = 42degres
SubstituteArea of the sector = 6²/2 * 42/180 π
Area of the sector = 13.188units
Hence the area of the sector rounded to the nearest hundredth is 13.19 square units
Learn more on area of sector here: https://brainly.com/question/22972014
What is the factored form of 8x2 12x? 4(4x2 8x) 4x(2x 3) 8x(x 4) 8x(x2 4)
Answers
13. A triangle has angle measurements of
36°, 36° and 108°. Is the triangle acute, obtuse
or right? How do you know?
Answers
108 > 90
5. Solve for x in the parallelogram below.
Answers
Answer:
11
Step-by-step explanation:
42 is also the degree for x so 42+42=84
there are 360 total degrees in a parallelogram
360-84=276
276 is divided by 2 as y and w are the same degrees
138 + 5 to find x and that is 143
143/13 is 11
Identify the unit rate in the graph.
Answers
[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]
Let's find the unit rate (r) ~
[tex]\qquad \tt \dashrightarrow \:r = \dfrac{y 2 - y1}{x2 - x1} [/tex]
[tex]\qquad \tt \dashrightarrow \:r = \dfrac{50 - 0}{1 - 0} [/tex]
[tex]\qquad \tt \dashrightarrow \:r = {50 }{} \: mph[/tex]
Take two points
(1,50)(2,100)Slope:-
m=y_2-y_1/x_2-x_1m=100-50/2-1m=50Can someone help with this?
Answers
8(2y+y)
hope it helps!!!
Can someone help me with this problem?
Answers
Explanation:
22 = 2*11
18 = 2*9
We see that 2 is the GCF of 22 and 18. It's the largest shared factor.
Now use the distributive property to say the following
22 + 18
2*11 + 2*9
2(11+9)
To check the answer, multiply the outer 2 by each term inside to end up with 22+18 again.
how do you do 6-4 6-5 math in 8th grade
Answers
Answer:
Image result for how do you do 6-4 6-5 math in 8th grade
The order of operations is a rule that tells the correct sequence of steps for evaluating a math expression. We can remember the order using PEMDAS: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).
Step-by-step explanation:
8. an airplane is approaching seattle international airport. the pilot begins a 13
degree angle of descent starting from a height of 500 feet. how far from the airport
is the plane? round to the nearest tenth. (2 points)
work:
10° angle of descent
airport
the plane is away from the airport.
Answers
Answer:
x=2164.50
Step-by-step explanation:
tan13=500/x
x=500/tan13
x=500/0.231
x=2164.50
I think this is correct but im not to sure
help help help please thanks
Answers
Answer:
1/15 gal / mile if your numbers are correct
Step-by-step explanation:
1/5 / 15/4 = 1/5 * 4 / 15 = 4/60 = 1/15
Which of these graphs represents a function
Answers
Answer: Answer X
Step-by-step explanation:
In order for a graph to represent a function, it must pass the vertical line test. This means, if you were to draw a vertical line at ANY point along the graph, it should not intersect more than one point. For answers W, Y, and Z, they clearly fail the vertical line test. Answer X is the only graph that passes the vertical line test.
Find the missing side lengths. ( BC and DE)
Answers
Answer:
BC= 24, DE= 15
Step-by-step explanation:
You can use the Pythagroean theorem which is a^2+b^2=c^2.
So AC is the hypotenuse, so a^2+10^2=26^2=a^2+100=676. Subtract 100, a^2=576. Then take the square root of 576 which is 24.
EC is the hypothenuse for triangle EDC, so a^2+36^2=39^2, a^2+1296=1521. Then subtract to 1296 to get 225. Then take the square root which is 15.
To avoid a storm, airline
pilots flew the path shown
at the right from Houston to
Cleveland. How many
miles farther did they travel
than if they had gone directly?
Graph is in the picture.
Answers
Answer:
add them to get the answer then times 2 to it
Step-by-step explanation:
2,037 + 366 = 2,403
Answer---2,403
How many 1/20 are there in 1/4?
Answers
Answer:
there are 5
Step-by-step explanation:
Indira drew 3 animals: an eagle, a snake, and a shark. She drew each animal twice, once with green eyes and once with red eyes. Ten students chose their favorite drawing. Three of them chose the shark with red eyes.
How many possible outcomes are there in the sample space of her experiment? Based on the results, what is the experimental probability that a shark with red eyes is not picked, written as a percent?
(PLEASE HELP!!)
Answers
Since each of the 10 students has 3 choices, there are [tex]3^{10}[/tex] possible outcomes in the sample space of her experiment.
Using the probability concept, it is found that there is a 70% experimental probability that a shark with red eyes is not picked.
What is a probability?A probability is given by the number of desired outcomes divided by the number of total outcomes.
For an experimental probability, these numbers of outcomes are taken from previous trials.
In this problem, out of 10 students, 3 choose the shark with red eyes, hence 7 did not choose them, thus:
p = 7/10 = 0.7 = 70%.
Hence, there is a 70% experimental probability that a shark with red eyes is not picked.
For the total number of outcomes, there are 10 students, each with 3 choices, hence there are there are [tex]3 \times 3 \times 3 \cdots \times 3 = 3^{10}[/tex] possible outcomes in the sample space of her experiment.
More can be learned about probabilities at https://brainly.com/question/14398287
How many milligrams are equal to 17. 9 grams?
A. 0. 0179 mg
B. 179 mg
C. 17,900 mg
DX. 179,000 mg
Answers
Answer:
17,900 mg
Step-by-step explanation:
I took the k12 test today
-. Write the integers -5, 4, 0, -8 in order from least to greatest.
A. 0, 4, -5, -8.
C.-8, -5, 0,4
B.-5, -8,0,4
D. 4,0, -5, -8
Answers
Answer:
This is the answer
C. -8, -5, 0,4
HELP! WILL GIVE BRAINLEST! What is the approximate degree measure of an angle of 4.59 rad?
Answers
Answer:
C
Step-by-step explanation:
You inherit $5000 from your long lost Uncle Harold. The bad news is that the money must sit in a bank account for the next ten years until you can use it. The account earns 7. 2% interest, compounded annually. This means that you will need to multiply the amount of money by 1. 072 to determine how much money remains at the end of the next year
Answers
Answer:
5360
Step-by-step explanation:
5000*1.072=5360
If the walls of a square room require 480 ft^2 of paint and the floor to ceiling height is 10
ft, what are the dimensions of the room?
Answers
Answer:
48 by 10 because
[tex]480\div 10 = 48[/tex]
therefore the wall dimensions are 48 by 10
Maggie sells homemade cookies. on a dozen cookies she spend 0.50 on flour, 0.70 on sugar, 0.40 on eggs,and 0.40 on packaging if she sells a dozen cookies for six dollars how much profitting does she make
Answers
Using the profit concept, it is found that she makes a profit of $4 selling a dozen cookies for six dollars.
What is a profit?
The profit is given by the subtraction of the revenue by the total costs.
In this problem:
For the dozen cookies, she earned a revenue of 6 dollars.In all, the total cost of the 12 cookies was of 0.5 + 0.7 + 0.4 + 0.4 = 2 dollars.6 - 2 = 4, hence she makes a profit of $4.
More can be learned about the profit concept at https://brainly.com/question/4001746
what is the circumference of a circle with radius 1 ?
Answers
Answer: 6.28
Step-by-step explanation: Using the formula 2×pie×radius
Circumference=2×3.14×1
=6.28
Answer:
Step-by-step explanation:
C = circumference
r = radius
d = diameter
C = 2[tex]\pi[/tex]r or C = [tex]\pi[/tex]d
I will be using the second formula since it is what I prefer but please note that when using the first the only thing being multiplied by two is the radius, not pi.
d = 2r
d = 2 * 1
d = 2
C = 2[tex]\pi[/tex]
NEED HELP QUIK!!! 20PTS
For his phone service, Ryan pays a monthly fee of $10, and he pays an additional $0.06 per minute of use. The least he has been charged in a month is $92.74. What are the possible numbers of minutes he has used his phone in a month? Use m for the number of minutes, and solve your inequality for m.
Answers
Answer:
$92.74 = 0.06m + $10
m = 1545.67 (or 1546 if rounded to the nearest whole minute)
Step-by-step explanation:
m represents the number of minutes, which we have been told are charged at $0.06 per minute.
$10 is the constant because he is charged this every month.
Set up the equation with these numbers:
92.74 = 0.06m + 10
Now solve the equation
Subtract 10 from both sides to get m by itself:
92.74 - 10 = 0.06m + 10 - 10
82.74 = 0.06m
Divide each side by 0.06 to get m as a whole number
92.74/0.06 = 1545.67
0.06m/0.06 = m
Therefore
m = 1545.67 (or 1546 if rounded to the nearest whole minute)
A rock was thrown from a cliff. Its path can be modelled by the relation h=-0.5d^2 + d + 12, where h is the height of the rock above the ground and d is the horizontal distance, both in metres. a) How high is the cliff? b) Write the relation in intercept form. c) Determine the zeros of the relation. d) At what horizontal distance did the
rock hit the ground? e) Graph the relation.
Answers
a) h = 12 ft, b) h = - 0.5 · (d - 6) · (d + 4), c) d₁ = 6, d₂ = -4, d) 6 ft, e) Please see the image attached below for further details.
How to analyze a second order polynomial related to the trajectory of the rock under parabolical motion
An object is under a parabolical motion, when it has a horizontal motion at constant velocity and a vertical motion uniformly accelerated by gravity and effects from air viscosity are neglected. In this case, the trajectory is described by second order polynomial (quadratic function).
a) The height of the cliff is found by evaluating the function at d = 0:
h = - 0.5 · 0² + 0 + 12
h = 12 ft
The initial height of the cliff is 12 feet. [tex]\blacksquare[/tex]
b) The intercept form of the quadratic function is found by algebraic procedures:
h = - 0.5 · d² + d + 12
h = - 0.5 · (d² - 2 · d - 24)
h = - 0.5 · (d - 6) · (d + 4)
The relation in intercept form is h = - 0.5 · (d - 6) · (d + 4). [tex]\blacksquare[/tex]
c) The zeros of the relation are d₁ = 6 and d₂ = -4. [tex]\blacksquare[/tex]
d) The rock hit the ground at a horizontal distance of 6 feet. [tex]\blacksquare[/tex]
e) The relation is graphed below. [tex]\blacksquare[/tex]
To learn more on quadratic functions, we kindly invite to check this verified question: https://brainly.com/question/5975436
i dont understanddd??/
Answers
Answer:
208 m^2
Step-by-step explanation:
Add the area of all of the rectangles and/or squares
4x6*2 + 4x8 *2 + 6x8 * 2
total = 208 m^2