Answer:
See the arrangement below
Step-by-step explanation:
Given the expression
2x^2+x - 9 = 4x
Step 1: Write in standard form
2x^2 + x - 9 - 4x = 0
2x^2 + x - 4x - 9 = 0
2x^2 - 3x - 9 = 0
Step 2; identify the coefficients
The standard quadratic expression is ax^2+bx+c = 0
a = 2, b = -3, c = -9
Step 3: Using the general formula to find the roots
x = -b±√b²-4ac/2a
x = -(-3)±√(-3)²-4(2)(-9)/2(2)
Step 4: simplify
x = -(-3)±√(-3)²-4(2)(-9)/2(2)
x = 3 ±√9+72/4
Step 5; Find the roots
x = 3 ±√81/4
x = 3 ±9/4
x = 3+9/4 and 3-9/4
x = 12/4 and -6/4
x = 3 and -3/2
What is the volume of a hemisphere with a radius of 3.6 cm, rounded to the nearest tenth of a cubic centimeter?
Answer:
97.7
Step-by-step explanation:
A student solved for the radius of a circle with a circumference of 120 In which step did the student make an error?
Step 24. ZT
Step 1: C = 21
Step 2: 1271 = 2
Step 3: 12т - 2те ZT
Step 4: 6 = Tr Step 5: /
Step 6: Solving for r, the length of the radius Solving for r, the length of the radius should be cm. Tr TE 4 is crm.
In which step did the student make an error??
Step:___
Solving for r, the length of the radius should be___cm.
Answer:
r = 6 cm
Step-by-step explanation:
C = 2πr
12π = 2πr
12π/2π = 2πr/2π
(The mistake is in the next step when calculating the division.
12π/2π = 6, same way 2πr/2π = r and NOT πr)
6 = r
r = 6 cm
Answer:
In which step did the student make an error?
Step
✔ 4
.
Solving for r, the length of the radius should be
✔ 6
cm.
Step-by-step explanation:
How’s many solutions does the graph have and what are they?
Answer:
The graph has 2 solutions
Step-by-step explanation:
they are -5 & 3
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A company does research on their product and finds that 3/5 of people who try the product use it again. If 400 people try the product how many would we expect to use it again
Answer:
240
Step-by-step explanation:
It is 240 because that would be 3/5 of 400.
which best describes a graph of a two-year-old child's height over the course of a year?
Answer:
Step-by-step explanation:
First
a group of 4 students buy movies tickets for $24.At this rate, how much would 20 students pay for the movies
Answer:
$120.
Step-by-step explanation:
Just multiply 4 by 5 since it makes 20. Since we know that the price for 4 people is $24, you multiply 24 by 5 since you are paying for 20 people.
WILL MARK BRAINLIEST!!! PLEASE ANSWER!!! WRONG ANSWERS JUST FOR POINTS WILL BE REPORTED!!!!!!!!!!!!!!
Answer: 2.5
Step-by-step explanation: r= sqrt(V/pi*h)
sqrt(171/(8.7)(3.14)
Step-by-step explanation:
solution given.:
radius=[r] let
height[h]=8.7in
volume[V] of cylinder=171in³
π=3.14
we have
volume[V] of cylinder=πr²h
171=πr×8.7
r²=[tex] \frac{171}{3.14×8.7}[/tex]
r=[tex] \sqrt{6.26} [/tex]
r=2.5in
so radius is 2.5in
Answer the question Please, I am not sure of what it is.
Answer:
total area = 14.6 units²
Step-by-step explanation:
rectangle = 3 x 5 = 15
cos 30 = height/3
triangle height = 2.6
triangle = 1/2(3)(2.6) = 3.9
semi circle = (3.14)(1.5²)(.5) = 3.53
total area = 15 + 3.53 - 3.9 = 14.63
1. Find (f(g(2)) for f(x)= 3x² and g(x)= 5 - x.
Answer: 27
Step-by-step explanation:
Does anyone know this question,I need help
Given h(x) = -X – 2, solve for x when h(x) = 3.
Answer:
x = -5
Step-by-step explanation:
One is given a function and the value of the function at a certain output. One must set the function to the given output, and solve to find the input,
h(x) = - x - 2
h(x) = 3
Set the output equal to the input,
h(x) = - x - 2 = 3
Inverse operations,
- x - 2 = 3
+2 +2
- x = 5
*-1 *-1
x = -5
Can you guys help me finish this quiz tonight
The Answer Is g(x)=1/3x^2
Use (3,3) to find the equation.
3^2x1/3=3
Meaning y or g(x) equals 3. Which is true.
Answer:
I'm pretty sure its (A)
g(x) = [tex]\frac{1}{3} x^2[/tex]
Assume a student shows up for EGR 280 completely unprepared and the instructor gives a pop quiz. Assume there are 6 questions, every single question is multiple choice question. Assume that each question has five options (a, b, c, d, and e), the student selects the answer randomly. Also assume that whether one question is answered correctly is independent of whether or not another question is answered correctly.
Required:
For a single question, what it the probability (p) that the student answers correctly?
Answer:
P=20%
Step-by-step explanation:
Let's suppose that each question in the test has one and only one correct answer. This means we have 1 desired outcome out of the total 5 desired outcomes. Therefore:
Probability=#of desired outcomes / #of possible outcomes
or
[tex]P=\frac{1 correct}{5 opctions}[/tex]
[tex]P=\frac{1}{5}[/tex]
P=0.20
P=20%
Solve for the letter t
which equation has (2, -1) as a solution
a. y=2x-1
b. y=x+3
c. y=x-3
d. y=-2x+1
Answer:
y=x-3
-1=2-3=-1
............
16. Which of the following
numbers should go in the
space to make the equation
true?
(4 x 2) × (6-3) = 4 x_x2
Answer: 3
Step-by-step explanation: Start off by solving the right side of the equation: 4 x 2 is 8 and 6 - 3 is 3, and then you must do 8 x 3 which is 24. Now, the equation should look like this: 24 = 4 x _ x 2. Next, you should go a step further with the left side of the equation by multiplying 4 and 2. Now, the equation should look like this: 24 = 8 x _. For the final step, you must divide 8 on both sides to solve for the missing number. Since 24 divided by 8 is 3, your answer is 3.
WILL GIVE BRAINLIEST ONLY IF ANSWER IS CORRECT!!! WRONG ANSWERS JUST FOR POINTS WILL BE REPORTED!!!!!!!!!!!
Answer:
r=14 in
Step-by-step explanation:
The volume of a cylinder is given by:
[tex]v = \pi \times {r}^{2} \times h[/tex]
So,
[tex]r = \sqrt{ \frac{v}{\pi \times h} } = \sqrt{ \frac{196 \times \pi}{\pi \times 1} } = \sqrt{196} = 14[/tex]
Step-by-step explanation:
solution given.:
radius[r] =r
height[h]=1in
volume[V] of cylinder=196πin³
we have
volume[V] of cylinder=πr²h
196π=πr×1
r²=[tex] \frac{196π}{π}[/tex]
r=[tex] \sqrt{196} [/tex]
r=14in
so radius is 14in
Identify the correct statement for the given figure.
Question 14 options:
A)
(5x)° + (2x + 7)° = 90°
B)
90° + (2x + 7)° = (5x)°
C)
(5x)° + (2x + 7)° = 180°
D)
(5x)° = (2x + 7)°
Answer:
A. 5x° + (2x + 7)° = 90°
Step-by-step explanation:
Complementary angles add up to give us 90°.
From the given diagram, we have a part of the angles on a straight line as a right angle. Which means it is 90°. Therefore, the other two angles, 5x° and (2x + 7)° will add up to give us 90°. Thus, 5x° and (2x + 7)° are complementary angles.
Therefore:
5x° + (2x + 7)° = 90°
The area of a rectangular flower bed is 6 ½ square feet. The width of the flower bed is ¾ foot. What is the length
Answer:
8 and 2/3 or 8.666666 forever
Step-by-step explanation:
A parallelogram has an area of 324 square feet and a base of 13.5 ft. how long is the height of the parallelogram? please help me!!
pls i will give 50 points
Answer:
y = |x - 1| - 1Step-by-step explanation:
This is a translation of the absolute value function:
y = |x| is translated down 1 unit and right by 1 unit:The function is:
y = |x - 1| - 1
Mr. Wallace took 600 mg of medicine. This was
75% of the full dose. What is the full dose?
Answer:800
Step-by-step explanation:
75% = 0.75
600/0.75 = x/1
Cross multiply:
0.75x = 600
Divide 0.75 to both sides:
x = 800
So the full does is 800mg.
If k(x) = 2x^2-3√x, then k(9) is
1) 315
2) 307
3) 159
4) 153
Answer:
153
Step-by-step explanation:
k(9)=2×9^2-3/9
k(9)= 2×81-9
k(9)=153
Use the quadratic formula to find both solutions to the quadratic equation
given below.
4X2 +5x + 1 = 0
Answer:
A and B are correct
Step-by-step explanation:
(NO LINKS)
Please help this assignment is over due and I don't get it
Answer:
5
2y
40
Step-by-step explanation:
Answer:
y = 5
Because [2y] is on both sides of the equation, 8y must be equal to [40] so that the equation is true.
Step-by-step explanation:
Combine like terms to find the value of y.
8y + 2y = 2y + 40
10y = 2y + 40
8y = 40
y = 5
As we can see, we ended with 8y = 40, and 2y is the only term on both sides of the equation.
There is a group of 8 people ordering pizza. If each person
gets 3 slices and each pizza has 5 slices, how many pizzas
should they order?
Answer:
5 pizzas
Step-by-step explanation:
8people times 3slices = 24 slices needed
24slices/ 5 pizzas per box= 4.8 you cant buy 4.8 boxes of pizza, so you round it to 5 boxes.
Scenario: The Cannon Instructions: View the video found on page 1 of this Journal activity. Using the information provided in the video, answer the questions below. Show your work for all calculations. The Cannon: Ernest's friend Nik is about to be shot out of a cannon. The path he will travel follows a parabolic arch that can be described by this polynomial. f(x) = –0.05(x2 – 26x – 120) He is supposed to land on a safety net 30 feet away. Does the function give you enough information to tell you where he will land? If so, how far from the cannon will he land?
Answer:
Part A
Yes
Part B
He will land at a point 30 meters from Cannon
Step-by-step explanation:
Part A
The given function that represent the path of the Cannon, which is the path of a parabolic arc, is presented as follows;
f(x) = -0.05·(x² - 26·x - 120)
We note that the height, 'h', of the path of a parabola at a horizontal distance, 'x' from the origin is equal to f(x)
Therefore, given that at the ground level, at the start and end of the flight, the f(x) = 0, we can write;
-0.05·(x² - 26·x - 120) = 0
∴ x² - 26·x - 120 = 0
x = (26 ± √((-26)² - 4 × 1 × (-120)))/(2 × 1)
Which gives;
x = 30 or x = -4
Therefore, he lands at a point 30 meters from the starting point
Therefore, the function gives enough information to tell where he will land
Part B
He lands at the point, x = 30 from the point the cannon was fired.
3. Terry wants to buy 3 toys.
He can choose trucks or robots.
Complete the table to show three
different ways Terry can choose
the 3 toys.
Answer:
Robot truck robot
truck robot truck
robot robot robot
truck truck truck
Step-by-step explanation:
A lawnmower has a blade that extends out 1 foot from its center. The tip of the blade is traveling at the speed of sound, which is 1,100 feet per second. Through how many revolutions per minute is the blade turning?
Answer:
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nk to the answer:
bit.^{}
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