We need to find time taken to reach arrow to its maximum.
The path of the arrow can be modeled with the equation [tex]y=-x^2+ 42x-80[/tex] .
Differentiating the given equation w.r.t x and equate it to zero.
[tex]\dfrac{dy}{dx}=-2x + 42 \\\\42 - 2x = 0\\\\x = 21\ seconds[/tex]
Putting value of x = 21 sec in given equation, we get :
[tex]y=-x^2+ 42x-80\\\\y = -(21)^2 + (42\times 21) - 80\\\\y = 361 \ feet[/tex]
Therefore, time taken to reach maximum height is 21 seconds.
PLEASE HELP ASAP!?!?!?
Answer:
i only did the second one!
but i am still trying to solve the first.
Hope I am correct! please forgive me if this is wrong!
I did also the first one!
NEED HELP ASAP DONT HAVE TIME PLSSS Mr and Mrs. Neal want to repaint the outside of their house. To get the specific shade of green that they want the salesperson at the hardware store needs to mix green paint and white paint in the ratio of 7:2. How many gallons of white paint will the salesperson need if she uses 14 gallons of green paint? 0 49 4 0 1 hing O 28
Answer:
Your answer is 4
Step-by-step explanation:
because if it’s a 7:2 ratio and you have 14 gallons of green paint then you will need 4 gallons of white paint.
Answer:
4 gallons of white paint
Step-by-step explanation:
If the ratio of the mix is 7:2, then all you need to do is multiply both sides by 2 and you get the ratio of 14:4
The salesperson will need 4 gallons of white paint
And 14 gallons of green paint
HELP!!! 15 POINTS!!!!
Answer:
Nothing
Step-by-step explanation:shahhahhahahahhaha
Right triangle JKL is shown below.
What is the measure of
nearest degree.
Answer:
Step-by-step explanation:
Hypotenus=6
Adjacent=4
H and A
Cos x degrees= A divided by H
4 divided by 6=0.666666666
cos inverse(0.6666666666666666)
=48.2
=48
In the following expressions identify the leading coefficiant and constant term for each:
5x{little corner 2} - 10
and
-x{little corner 2} - 10x + 2
looking at the graph what does the y intercept tell you about the puppies in the litter? help me
What is the y-intercept of the function?
Answer:
-5
Step-by-step explanation:
Circle K has a diameter of 10 centimeters and a major arc RS is intercepted by a central angle of 190°. Find the length of major arc RS . Round to the nearest tenth.
Answer:
16.6
Step-by-step explanation:
Maurice and his father are building a dog house. They are using long pieces of wood and cutting them into smaller pieces. They have a piece of wood that is 3.6 feet long and are cutting it into pieces that are each 0.75 feet. How many smaller pieces will they be able to make?
Answer:
4.8 smaller pieces
Step-by-step explanation:
Total length of wood = 3.6 feet
Length of each piece = 0.75 feet
How many smaller pieces will they be able to make?
Number of smaller pieces of wood = Total length of wood / Length of each piece
= 3.6 feet / 0.75 feet
= 4.8 smaller pieces
Number of smaller pieces of wood = 4.8
What is 5+5x•40 if x equals 5
24
A company deposits $90,000 into an account that pays 1% interest per month. At the end of each month, the company withdraws $10,000. After two months
the company had $71,709 remaining in the account,
Answer:
90k-20k = 70k they had 1709 interest money
Step-by-step explanation:
PLS HELP! ASAP!
Find the value of x in the triangle below
Answer:
the answer is 56
Step-by-step explanation:
because it is an equilateral triangle the other side is 62 so you add 62+62=124 180-124=56
can someone help me !
Angle 1 and Angle 3
This is because the two angels are congruent due to the consecutive angles theorem,
............Find .....X......
Answer:
x=50
Step-by-step explanation:
(x-10)+x+90=180
2x-10+90=180
2x+80=180
2x=100
x=50
1. Lauren’s scores on her four math tests are: 83%, 79%, 94%, and 96%. What is the lowest score Lauren needs to achieve an average score greater than 85?
2. Twice an integer increased by 6 is less than 48.
A. Write an inequality.
B. What is the largest integer this could be?
Answer:A
Step-by-step explanation:
I need help with number 11 just the answers no need to show work!
Please answer correctly. I will give you the brainliest and 15 points!!! plzzzzzzzzzzzzz need ASAP
Which of these is not a possible r-value?
Answer:
D
Step-by-step explanation:
A value of greater than 1 is not a possible value of r or the correlation coefficient in statistics. Therefore, it is not D
Anna made and sold x ceramic vases one week. Her profit, P, in dollars is calculated using the formula P = R - C . Where R represents her revenue and C represents her costs. If R = 25x - 0.5x ^ 2 C = 100 + 5x which expression represents her profit in dollars?
Answer:
-0.5x² + 20x + 100
Step-by-step explanation:
Given:
R = 25x - 0.5x²
C = 100 + 5x
P = R - C
Where,
P = profits
R = Revenue
C = Cost
which expression represents her profit in dollars?
P = R - C
R = 25x - 0.5x²
C = 100 + 5x
= 25x - 0.5x² -(-100 + 5x )
= 25x - 0.5x² + 100 - 5x
= -0.5x² + 20x + 100
The expression which represents her profit in dollars is -0.5x² + 20x + 100
Find the value of X
Answer:
should be 80, angle 50 is congruent on both sides to 50+50 equals 100. The triangle sum theorem says a triangle adds up to 180 degrees so we are left with 80, X=80 degrees
For addition, drag tiles onto the board.
To form a group. place one tile on top of another.
Which expressions have the same solution as -4(6)?
Check all that apply.
-4-6)
O 4(-6)
O 6(-4)
-8(2)
O 12(-2)
Board sum: 0
1+1??????????????????????????????????????????
Answer: 2
Step-by-step explanation: 1+1=2
Answer:
1+1=2 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Step-by-step explanation:
5. What is the perimeter of a rectangle with a length of 9x - 4 and a width of 5x+2?
Answer:
14x-2
Step-by-step explanation:
In order to find the perimeter we need to add the length and width together. So adding 5x and 9x gives us 14x. -4+2=-2
The perimeter of a rectangle with a length of 9x - 4 and a width of 5x+2 is, 28x-4
What is the perimeter?Perimeter is a mathematical term, which means total outer boundary of a figure, we define it only for two dimensional figures.
Perimeter = Sum of length of the all the sides
Given that,
length of rectangle = 9x - 4
width of rectangle = 5x+2
As we know,
Perimeter = Sum of length of the all the sides
Perimeter = (9x - 4) + (5x+2) + (5x+2) + (9x - 4)
Perimeter = 28x-4
Hence, The perimeter is 28x-4
To know more about Perimeter check:
https://brainly.com/question/6465134
#SPJ2
What is the circumference of the circle
A. 18.84
B. 17.6
C. 21.79
D. 15.65
Answer:
18.84
Step-by-step explanation:
The formula for circumference is 2(pi)r, I think. The radius is 3. 3 times 2 is 6. 6 times 3.14 is around 18, I think.
hope this helps
Answer:
A
Step-by-step explanation:
Plz help I make u brainliest
Answer:
1. you got it dude
Step-by-step explanation:
..............
Answer:i believe the answer is 23
what is a simplified fractional eqeuvilent of a teminating decimal .68
Answer:
17/25
Step-by-step explanation:
0.68 is read as "sixty-eight hundredths."
Write sixty-eight hundredths as a fraction: 68/100
Now we reduce 68/100.
68/100 = 34/50 = 17/25
Answer:
17 /25
Step-by-step explanation:
0.68
is the same as
6
10
+
8
100
=
68
100
68
÷
4
100
÷
4
=
17
25
As 17 is a prime number we stop at this point. srry if this in not correct
How many solutions does this equation have
6x + 2x - 4= 4(2x - 1)
Answer:
All Real Numbers
Step-by-step explanation:
Step 1:
6x + 2x - 4 = 4 ( 2x - 1 ) Equation
Step 2:
8x - 4 = 8x - 4 Combine Like Terms
Step 3:
8x = 8x Add 4 on both sides
Answer:
All Real Numbers
Hope This Helps :)
Jacob stated that he solved the equation 2x+3=5 using addition and multiplication property of equality. Which statement is true?
A. Jacob added -3 to both sides and multiplied both sides by 1/2
B. Jacob added -3 to both sides and multiplied both sides by 2
C. Jacob added 3 to both sides and multiplied both sides by 1/2
D. Jacob added 3 to both sides and multiplied both sides by 2
Answer:
It is A.
Step-by-step explanation:
It shows the steps that distribute everything properly
what is the equation of the line
Answer:
x=3
Step-by-step explanation:
No matter what happens to the y value, x always stays on the number 3, so y does not matter for this equation, it is simply x=3.
Answer:
simply x=3
Step-by-step explanation:
CAN ANYONE HELP ME PLSS?
Answer: The domain is the 3rd answer
Step-by-step explanation:
if an object has a density of 6.g/mL and you put it into water, will it sink or float?
Step-by-step explanation:
If an object has a higher density than the fluid it is in (fluid can mean liquid or gas), it will sink. If it has a lower density, it will float. Density is determined by an object's mass and volume. If two objects take up the same volume, but have one has more mass, then it also has a higher density.
