Can someone please answer this, ill give you brainliest Would be very appreciated.
Answers
Answer:
(4, 0) and (-2, 0)(1, -9)(0, -8)Step-by-step explanation:
Finding the x-intercepts :
y-value of the x-intercept is 00 = (x - 4)(x + 2)x - 4 = 0 ⇒ x = 4x + 2 = 0 ⇒ x = -2The x-intercepts are : (4, 0) and (-2, 0)Finding the vertex :
Expanding the function ff(x) = (x - 4)(x + 2)f(x) = x² - 4x + 2x - 8f(x) = x² - 2x - 8Vertex = (h, k)h = -b/2a = -(-2)/2(1) = 1k = (1)² - 2(1) - 8k = 1 - 2 - 8 = -9The vertex is : (1, -9)Finding the y-intercept :
Substitute x = 0 in the functionf(0) = 0² - 2(0) - 8f(0) = -8The y-intercept is : (0, -8)In order to find x-intercept, the f(x) or y will be 0
=================
(x-4)(x + 2) = 0
(x-4) = 0, (x + 2) = 0
x = 4, x = -2
x intercepts: (4, 0) and (-2, 0)
2) What is the ordered pair of the vertex?In order to find vertex use the formula: x = -b/2a
y = (x-4)(x + 2)
y = x² -4x + 2x -8
y = x² - 2x -8
Now find x-coordinate of vertex:
x = -(-2)/2(1)
x = 2/2
x = 1
y coordinates: (1-4)(1 + 2) = -9
Ordered pair of vertex: (1, -9)
3) What is the y intercepts of the graph?In order to find y intercept, insert x = 0
y = (0-4)(0 + 2)
y = -8
y intercept: (0, -8)
Related Questions
which set of ordered pairs represents a function
Answers
Answer:
A is correct{(-4,4),(-2,4),(1,4),(5,4)}
A cube has a surface area of 181.5sq. In. What is the length of the sides
Answers
Answer:
Answer = 5.5
Step-by-step explanation:
The formula for finding the surface area of a cube is SA = 6(s^2) where s = sides. Since we know the surface area we plug it in for SA. So,
181.5 = 6*s^2
Now we divide 6 by both sides to get
30.25 = s^2
Now we have to find the square root of both sides to get
5.5 = s
Hope that helps! :)
help i need the answer
Answers
Answer:
Step-by-step explanation:
pls help i will give brainliest and 5 stars
Answers
Answer:
See attached diagram
Step-by-step explanation:
See attached picture....I assumed -3% was really just -3
The volume of a right cone is 3975\piπ units^3 3 . If its radius measures 15 units, find its height.
Answers
If its radius measures 15 units. Then the height of the cone will be 53 units.
What is Geometry?It deals with the size of geometry, region, and density of the different forms both 2D and 3D.
The volume of a right cone is 3975π cubic units.
If its radius measures 15 units.
Then the height of the cone will be
The volume of the cone is given as
Volume = 1/3 x π x r² x h
Then we have
3975π = 1/3 x π x 15² x h
11925 = 225 x h
h = 53 units
More about the geometry link is given below.
https://brainly.com/question/7558603
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helpppppppppppppppppp 100 points
Answers
Answer:
Range = 4Mode = 3Step-by-step explanation:
The range is the difference between the maximum and minimum values:
5 - 1 = 4The mode is the most repeated value of the data set
This is 3 (repeated 5 times)Answer:
I attached a screen shot of the answer
Step-by-step explanation:
Calculate the price of melons if melons cost $2.35 a pound and the melon on the scale weighs 2.2 pounds, making sure to round your answer to the nearest cent.
Answers
Please mark brain gl bye
PLEASE HELP ASAP WILL GIVE BRAINLIEST AND 5 STARS
Answers
The hcf of 182 and x is 26 and the l.c.m of 182 and x is 1092 determine the value of x
Answers
The value of x such that the hcf is 26 and the l.c.m is 1092 is 156
How to determine the value of x?The numbers are given as:
182 and x
The HCF and LCM are given as:
HCF = 26
LCM = 1092
As a general rule;
The product of LCM and HCF of x and y equals the product of x and y
So, we have:
182 * x = 26 * 1092
Divide both sides by 182
x = 156
Hence, the value of x is 156
Read more about HCF and LCM at:
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Guys, I beg you! How do you do these factoring quadratic equations!
Which is a solution to (x − 2)(x + 10) = 13
Answers
======================================================
Explanation:
There are at least three ways to solve this.
----------------------------------------------
Method 1:
We could graph y = (x-2)(x+10) using a tool like Desmos. Graph y = 13 as well which is a horizontal line.
Check out the screenshot shown below.
The parabola in red and the horizontal line in blue intersect at the locations (-11, 13) and (3, 13)
We only focus on the x coordinates of the intersection points.
Therefore, the two solutions are x = -11 and x = 3
The order of the solutions doesn't matter.
----------------------------------------------
Method 2:
Expand things out and get everything to one side
(x-2)(x+10) = 13
x^2 + 10x - 2x - 20 = 13
x^2 + 8x - 20 - 13 = 0
x^2 + 8x - 33 = 0
From here we can use the quadratic formula
[tex]x = \frac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\x = \frac{-8\pm\sqrt{(8)^2-4(1)(-33)}}{2(1)}\\\\x = \frac{-8\pm\sqrt{64+132}}{2}\\\\x = \frac{-8\pm\sqrt{196}}{2}\\\\x = \frac{-8\pm14}{2}\\\\x = \frac{-8+14}{2} \ \text{ or } \ x = \frac{-8-14}{2}\\\\x = \frac{6}{2} \ \text{ or } \ x = \frac{-22}{2}\\\\x = 3 \ \text{ or } \ x = -11\\\\[/tex]
----------------------------------------------
Method 3:
Instead of using the quadratic formula, we could factor.
To factor x^2+8x-33, we need to find two numbers that
Multiply to -33Add to 8Through trial and error, you should get 11 and -3
11 times -3 = -3311 plus -3 = 8So,
x^2+8x-33 = 0
(x+11)(x-3) = 0
x+11 = 0 or x-3 = 0
x = -11 or x = 3
A conservationist determines that a particular beach is eroding at a rate of 1.1% each year. when writing an explicit formula to represent the amount of beach remaining each year, which value should she use as the common ratio? 0.011 0.089 0.989 1.011
Answers
Using exponential function concepts, it is found that the common ratio would be given by 0.989.
What is an exponential function?A decaying exponential function is modeled by:
[tex]A(t) = A(0)(1 - r)^t[/tex]
In which:
A(0) is the initial value.r is the decay rate, as a decimal.1 - r, also as a decimal, is the common ratio.In this problem, the amount decays 1.1% a year, hence:
r = 0.011.1 - r = 1 - 0.011 = 0.989.The common ratio would be given by 0.989.
More can be learned about exponential function concepts at https://brainly.com/question/25537936
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Answer: C
Step-by-step explanation:
Trust
The table shows the amount of money in your bank account over a period of 5
5
weeks. You plan to keep saving at the same rate until you have $800
$
800
in the account. Which equation could you use to find the number of weeks,
n
, it would take to reach your goal?
Math item stem image
CLEAR CHECK
100·=800
100
·
n
=
800
35·+100=800
35
·
n
+
100
=
800
100·+35=800
100
·
n
+
35
=
800
35·+800=100
Answers
The linear function that you could use to find the number of weeks it would take to reach your goal is:
35n + 100 = 800.
What is a linear function?A linear function is modeled by:
y = mx + b
In which:
m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.From the table, we have that:
The intercept is the initial balance of 100.The slope is the rate of change of 35.Hence the balance after n weeks is given by:
B(n) = 100 + 35n.
You will have $800 when B(n) = 800, hence the equation is:
35n + 100 = 800.
More can be learned about linear functions at https://brainly.com/question/24808124
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If 10% of a number is 16, find 5% of that number.
Answers
Answer:
5% = 8
Step-by-step explanation:
Since 10% of a number is 16, multiply that by 10 to get 160. In order to get 5%, divide 10% (16) by 2 to get 8, which is 5% of 160.
Find the length of the hypotenuse
Answers
a = height , b= base ,c = hypotenuse
a^2 + b ^2 = c ^2 ( theorem of Pythagoras)
(12cm)^2+ (5cm)^2 = hypotenuse
144cm^2 + 25 cm ^3 = hypotenuse
169cm^2 = hypotenuse
Square toot of 169cm ^2 = hypotenuse
Answer : 13 cm = hypotenuse
The table shows the ratio of people who ate a certain type of lunch to the total number of people who ate lunch. Lunch Type of Lunch Ratio to the Total Turkey sandwich 1 3 1 Vegetarian sandwich 6 4. Chicken sandwich 15 Salad 7 30 A total of 840 people ate lunch. Which statement is true? A Half as many people ate a turkey sandwich as ate a vegetarian sandwich. B One-fourth as many people ate a vegetarian sandwich as ate a salad. C There were 56 more people who ate a turkey sandwich than ate a chicken sandwich. с D There were 28 more people who ate a salad than ate a chicken sandwich.
Answers
Using proportions, it is found that the correct statement is given by:
C There were 56 more people who ate a turkey sandwich than ate a chicken sandwich.
What is a proportion?A proportion is a fraction of a total amount.
In this problem, one third out of 840 people ate Turkey Sandwich, hence the number is given by:
nT = 840/3 = 280.
One sixth ate Vegetarian Sandwich, hence the number is given by:
nV = 840/6 = 140.
4/15 ate Chicken Sandwich, hence the number is given by:
nC = 4 x 840/15 = 224.
7/30 ate Salad, hence the number is given by:
nS = 7 x 840/30 = 196.
Thus, option C is correct.
More can be learned about proportions at https://brainly.com/question/24372153
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What is the volume of this cone?
Answers
Answer:
201.06193
Step-by-step explanation:
A population of bees is decreasing. The population in a particular region this year is 1250. After year 1, it is estimated that the population will be 1000. After 2 years, it is estimated that the population will be 800.
How many years will it take for the bee population to be below 100?
Answers
Answer:
5 years
Step-by-step explanation:
1250 => 250 1000 => 300 800 => 350 450. => 400 50.
A square has an area of square inch what is [tex]18x^{2}[/tex] the length of one of its sides
Answers
Answer:
18x
Step-by-step explanation:
18x times 18x
so the side is 18x because it was squared
Which mass is least 1500 mg, 13.2 kg, 30000 cg, 7428g
Answers
Answer:
1500 mg is the least mass
Step-by-step explanation:
Lets convert them all to the same mass unit,
1500 mg to grams: 1500 mg / 1000 = 1.5 grams
13.2 kg to grams: 13.2 kg x 1000 = 13,200 grams
30000 cg to grams: 30,000 cg / 100 = 300 grams
7428g no conversion needed!
1.5 grams, 13,200 grams, 300 grams, 7,428 grams
1.5 is the smallest number
The ratio of width to length for an American flag is 10 to 19. How wide is a flag that is 66 cm long
Answers
Answer:
35cm
Step-by-step explanation:
The ratio of width:length is 10/19. Since the given length is 66cm long, we multiply by the ratio to get 66 x 10/19 = 34.7 = 35cm
Find the area of this circle. Use
3.14 for i.
72 in.
..
in.2
The area of the circle is about
(Round to the nearest hundredth as needed.)
Answers
Answer:
4,069.44 in squared
Step-by-step explanation:
pir^2
72/2 = 36
36^2 = 1,296pi
1,296*3.14 = 4,069.44
(1+5²) –16 (1/2)³
Please help please and Thank you
Answers
Answer:
the answer simplified is 24
Step-by-step explanation:
Which of these equations shows the correct relationship between x and y?
X+y = 90
x + y = 180
x=y
x + 50 = y
Answers
they are adjacent angles
x=50
y=130
What is the first step when rewriting y = 3x2 + 9x – 18 in the form y = a(x – h)2 + k?
3 must be factored from 3x2 + 9x
x must be factored from 3x2 + 9x
9 must be factored from 9x – 18
3 must be factored from 3x2 – 18
Answers
Answer:
(a) 3 must be factored from 3x^2 + 9x
Step-by-step explanation:
The first step when rewriting a quadratic from standard form to vertex form is to factor out the leading coefficient from the variable terms.
__
y = 3x^2 +9x -18 . . . . . . given
y = 3(x^2 +3x) -18 . . . . . leading coefficient factored out
y = 3(x^2 +3x +2.25) -18 -3(2.25) . . . . . complete the square
y = 3(x +1.5)^2 -24.75 . . . . . simplify to vertex form
Answer:
3rd one
Step-by-step explanation: I am pretty sure becuase the other ones don't sound right hope this helps :)
Jamal is painting his room. He determines that 1/2 gallon container of paint will cover 1/6 of a wall. How many gallons of paint are needed to cover an entire wall (assuming there are no windows or doors)? Enter your answer in the box below, do NOT include units.
Answers
Answer:
3 gallons
Step-by-step explanation:
1/6+1/6=2/6=1/3
1/3x3=3/3=1
Someone help me I send a question on my profile
And this my question
Answers
Step-by-step explanation:
A=X AB=ZX
B=Z. AC=XY
C=Y. BC=YZ
Traingle BCA = Traingle ZYX
Help please! Thank you
Answers
Answer:
A I might be wrong do
Step-by-step explanation:
What is the mean of the data on the dot plot? ( Round to the nearest hundredth)
Answers
Answer: 100
Step-by-step explanation:
Select the correct answer.
Which statement describes a relationship between these equations?
equation 1: y= 3x - 7
equation 2: y=-4x-7
O A.
The equations have the same y-intercept.
B.
The equations have the same slope.
OC.
Each equation represents a line that decreases from left to right.
OD.
Each equation represents a line that increases from left to right.
Answers
Answer:
A. Yes they do. Both equations have their opposing set of y-intercept. Where equation one has a y-intercept of +7, and equation two, +7.
B. No they do not. Equation one has a slope of +3, while equation 2 has a slope of -4.
C. Yes they do. Equation one represents that of a positive increasing graph, while equation two the opposite, decreasing.
Step-by-step explanation:
You can use the slope formula to identify and graph each equation simply by using y = mx + b. Where y is the the y coordinate, x is the x coordinate, m is the slope, and b is the y-intercept. With this you can start plotting by marking the y-intercept by putting the x as zero and seeing what number you get. In this case, 3x0-7 = -7. Meaning that would be the y-intercept. For the slope, depending on what the x coordinate is, that's how much the graph will increase or decrease whenever the x coordinate changes. Say the x coordinate is 1, so 3x1-7 = 3-7 = -4. Meaning your coordinate would be (1, -4) where you can keep doing this formula on and on to find the y coordinate for what x coordinate you want to find, or make it easier to graph with a ruler on paper once you have enough points.
OMG PLS HELP ME!!!!! WILL GIVE BRAINLIEST
Answers
Step-by-step explanation:
I made the added things green so you can understand better what I did to get the right answer. If you have any questions you may text me
Answer:
1. 62 ( 8X8 ) -2
2. 13 ( 10 + 3)
3. 6 ( 4 + 2 )
4. 18 (22 - 4)
5. 3 ( 6/2)
6. 14 (7+7)
Step-by-step explanation:
Next question pls !
It just plain simple add , multiplication , division and subtraction
Pls Do what as you written ! Mark me as Brainly for 100% correct !! Alr helped
