Answer:
120$
Step-by-step explanation:
PLEASE HELP ME!!!!!!
9514 1404 393
Answer:
vertex: (2, -3.2)
axis of symmetry: x = 2
zeros: x=0, x=4
formula for axis of symmetry:
x = <x-coordinate of vertex>x = -b/(2a) . . . . . . . where the quadratic is ax^2 +bx +cx = average of zeros, (z1 +z2)/2Step-by-step explanation:
a) The vertex x-coordinate is halfway between the zeros, so is x = (0+4)/2 = 2. It is where the graph has a turning point.
The vertex y-coordinate is the low point of this graph. It is not on a grid line, so we can only guess at its value. I choose to call it -3.2.
The vertex is (2, -3.2).
__
b) The axis of symmetry is the vertical line through the vertex. The constant in its equation is the x-coordinate of the vertex:
x = 2
__
c) The zeros of the function are where the function crosses the x-axis. These are marked on the graph with red dots. The zeros are x=0 and x=4.
__
d) When the quadratic is written in standard form, ax^2 +bx +c, the equation of the axis of symmetry is ...
x = -b/(2a) . . . . . perhaps this is the formula you're being asked for (?)
When there is no equation, the axis of symmetry can be found from the graph a couple of ways. One is to identify the x-coordinate of the vertex.
x = <x-coordinate of the vertex>
Another is to average the zeros, since they are symmetrical about the axis of symmetry.
x = average of zeros = (z1 +z2)/2
If the quadratic is written in vertex form, the vertex coordinate is the constant in the equation for the axis of symmetry.
y = a(x -h)^2 +k . . . . . quadratic with vertex (h, k)
x = h . . . . . . equation of axis of symmetry
The mean test scores with standard deviations of four English classes are given below.
Class
Mean
Standard Deviation
Mrs. Jones
89
1.9
Mrs. Rijo
82
1.4
Mr. Phan
73
3.4
Mrs. Scott
90
6.1
Which statement is most likely to be true?
The scores of Mrs. Scott’s class are the closest to the class mean.
The scores of Mr. Phan’s class are the closest to the class mean.
The scores of Mrs. Jones’s class are the closest to the class mean.
The scores of Mrs. Rijo’s class are the closest to the class mean.
Answer: the answer is B
Step-by-step explanation:
edge 2021
Answer:
b
Step-by-step explanation:
A quadratic function has a vertex of (0,7) and passes through the point (2, 3). Which of
the following is the equation of the graph of the quadratic function?
Answer:
Y = -2X + 7
Step-by-step explanation:
Y = a(x-h)^2 + k
From (h,k) h = 0 k = 7 x = 2 y = 3
3 = a(2-0) + 7
3 = 2a - 0 + 7
Collect like terms
2a = 3 - 7
2a = -4
Divide both sides by 2
2a/2 = -4/2
a = -2
y = a(x-h) + k
y = -2(x-0) + 7
y = -2x + 0 + 7
y = -2x + 7 or
y + 2x - 7 = 0
If the section for Rosemary has a side length of 2x and together the sections for Mint and Rosemary cover 6x2 - 2x square feet. What would be the width of the Mint section?
Answer:
3x-1
Step-by-step explanation:
Let the area of the mint section = Length * Width
Given
Area = 6x²-2x
Length
Required
Width
A = LW
Substitute
6x²-2x = 2x(W)
2x(3x-1) = 2xW
Divide both sides by 2x
2x(3x-1)/2x = 2xW/2x
3x-1 = W
W = 3x-1
Hence the width of the mint section is 3x-1
I need a minimal of 3 paragraphs explain how the problem was solved and if it’s correct, please help!
That is a question about spatial geometry.
In our problem, we have to calculate lateral surface area of a triangular prism. Let's see how to solve this.
A triangular prism has 5 faces: 3 equals rectangles and 2 equals triangles. If we can find a way to calculate those areas, we can solve the problem.
The first thing that we should note is that we know the dimensions of the rectangular faces. The dimesions of the rectangular are 5cm and 8cm. To calculate the are of a rectangle, we multiplicate the dimensios of it. Therefore, each rectangle (in our problem) has [tex]5 \times 8 = 40cm^2[/tex] of area. There are 3 rectangles, so, the sum of the 3 rectangular area is [tex]40 + 40 + 40 = 120cm^2[/tex].
Now, we need to know the area of the triangular areas. To calculate the area of a triangle, we need to know the value of the base and the value of the height.
In the image, we know the value of the base, but we do not know the value of the height. To calculate the height, we can use the Pythagorean Theorem because we have a right triangle. (Please find attached the document.)
The Pythagorean theorem says that:
[tex]\boxed{a^2 = b^2 + c^2}[/tex]
a is the hypotenuse and b and c are cathetus.
In this right triangle, the value of the hypotenuse is 5cm and the value of one cathetus is the half of 6cm (that is 3cm). Let's replace the values in the expression:
[tex]a^2=b^2+c^2\\5^2= 3^2 +c^2\\25 = 9 + c^2\\c^2 = 25 - 9\\c^2 = 16\\c = \sqrt{16} \\c = 4cm[/tex]
Now, we know the bases and the height of the triangular areas. To calculate the area of a triangle, we multiply the base and the height and we divided the result by 2. See the expression:
[tex]\boxed{A_t=\frac{b\times h} {2}}[/tex]
b is the base and h is the height. Let's replace the values in the expression:
[tex]A_t = \frac{b\times h}{2} \\A_t = \frac{6\times4}{2} \\A_t = \frac{24}{2} \\A_t = 12cm^2[/tex]
So, each triangular area has 12cm² of area. Therefore, the sum of the triangular areas is [tex]12 + 12 = 24cm^2[/tex].
Finally, we know that the sum of the rectangular area is 120cm², and the sum of the triangular area is 24cm², so, the lateral surface area is [tex]120 + 24 = 144cm^2[/tex].
In other words, they didn't choose the correct answer because the correct answer is J) 144 cm².
I hope I've helped. :D
Enjoy your studies. \o/
❗️help me❗️2. Marissa is playing a game using the spinner below.
с C
Red
Blue
Red
Blue
C
Which tree diagram shows all the possible outcomes that Marissa can get
when she spins the arrow twice?
Explanation:
In this answer choice, we effectively have two columns. In the first column is simply R and B, with R over B. This represents spinning either red (R) or blue (B).
Depending on the outcome, you branch the same outcomes from that.
So if you spin R, then you'll have R and B branch off that. Same idea applies to blue as well.
Something like choice D doesn't work because we have R show up twice at the very bottom.
The tree diagram shows all the possible outcomes that Marissa can get
when she spins the arrow twice is choice D.
What is the sample space for a random experiment?Sample space is the set of all possible outcomes the considered random experiment can result to.
Marissa is playing a game using the spinner below.
Red, Blue, Red, Blue
In this answer choice, we effectively have two columns. The first column is simply R and B, with R over B.
This represents spinning either red (R) or blue (B).
Depending on the outcome, you branch the same outcomes from that.
So, if you spin R, then you'll have R and B branch off that. The same idea applies to blue as well.
choice D doesn't work because we have R show up twice at the very bottom.
The tree diagram shows all the possible outcomes that Marissa can get
when she spins the arrow twice is choice D.
Learn more about the possible outcome;
https://brainly.com/question/9773761
#SPJ2
Need Help ASAP Will Mark Brainliest
Answer:
I only know where da first one goes lol
Step-by-step explanation:
8.333333333333.... can be denoted using a fraction, therefore it's a rational number. It turns out that irrational numbers cannot be denoted using simple fractions.
good afternoon can anyone tell me the answer
HELPPP I WILL GIVE YOU BRAINLIEST WALLAH
Answer:
78qt= 19.5 U.S. gallons
Step-by-step explanation:
Fram Algebraic expression for the following
a)Two times a number increase by three
Answer:
2x + 3
Step-by-step explanation:
Let the number be x
2x + 3
Hope it helps :)
Please mark my answer as the brainliest
what is the volume of the cylinder shown below to the nearest hundredth of a cubic meter 3.5 m w 2 m height
Answer:
The answer is 76.97
Step-by-step explanation:
The formula that I used
V=πr^2h
Volume = π·3.52·2 ≈ 76.96902
Answer:76.93
Step-by-step explanation:
Add -7mn +5, 12 mn+2, 9mn -8,- 2mn-3
Answer:
7+5+12+2+9+2+3=40mn
Answer:
4mn - 6
Step-by-step explanation:
expressions => (-7mn) + 5, 9mn - 8, -2mn - 3
In addition, we get..... (-7mn + 9mn - 2mn) + (-3 - 8 + 5)
4mn + (-6)
=> 4mn - 6
Hope it helps.
b. x +6 <-8 and x-1 > -1
Answer:
what is the question? please write a question.
find the volume of metal required to make a closed box of thickness 1 cm with external measurements 12 cm × 7 cm × 10
Answer:
The volume of the metal is:
[tex]V_{t}=548\: cm^{3}[/tex]
Step-by-step explanation:
First, let's find the volume of the front face of the square:
[tex]V_{1}=12*7*1=84\: cm^{3}[/tex]
The back face is the same, so we have:
[tex]V_{2}=84\: cm^{3}[/tex]
The volume of the side faces will be:
[tex]V_{3}=7*10*1=70\: cm^{3}[/tex]
[tex]V_{4}=70\: cm^{3}[/tex]
And finally, the volume of the top and bottom side faces of the box will be:
[tex]V_{5}=12*10*1=120\: cm^{3}[/tex]
[tex]V_{6}=120\: cm^{3}[/tex]
The total volume of the metal will be:
[tex]V_{t}=V_{1}+V_{2}+V_{3}+V_{4}+V_{5}+V_{6}[/tex]
[tex]V_{t}=2(84)+2(70)+2(120)[/tex]
[tex]V_{t}=548\: cm^{3}[/tex]
I hope it helps you!
Write a piecewise-defined function that represents the graph?
Answer:
f(x) = { x, -5 ≤ x < 0 and 3x - 3, 1 ≤ x < 5
Step-by-step explanation:
The equation of one line is y = x
The equation of the other line is y = 3x - 3
Altogether,
f(x) = { x, -5 ≤ x < 0 and 3x - 3, 1 ≤ x < 5
The longest side is 24cm and the second-longest side is 20cm what is the length of the shortest side?
PLSS HELP I NEED IT RN
Answer:
x >= -3
x is greater than or equal to -3
Step-by-step explanation:
Answer:
it going be -3
Step-by-step explanation:
if 60 people were asked their favorite color how many people preferred blue when 26% were red ,16%green,30%blue,4%black and 24%yellow
Answer:
18 people preferred the color blue
Step-by-step explanation:
you switch the percent to a decimal and .30*60 is 18
Answer:
18 people
Step-by-step explanation:
26 red
16green
30blue
4black
24yellow
100percent=60
30=30×60÷100=18
Please help
Is that right?
Answer:
Yep your very smart
Step-by-step explanation:
Answer:
yep
Step-by-step explanation:
since a triangle's total angle is 180 degrees,
(5x + 18) + (3x + 2) + (x + 16) = 180
9x + 36 = 180
9x = 144
x = 16
m<D = (3x + 2)
m<D = 3(16) + 2
m<D = 48 + 2
m<D = 50 (your answer)
what is 2/4 x 3/5 = 3.14
Answer: It is false
Step-by-step explanation:
2/4x3/5=3.14
1/2 x 3/5=3.14
3/10=3.14
0.3=3.14
This is false
Answer:
Hey mat its me haylee id k if you remember me cuz its been a long while and im sorry about that but id like to talk again sometime soon.
Step-by-step explanation:
A company's profit from 1990 to 2020 is modeled by P(t) = .35t^2 - 10.7t + 125.38 where t=0 represents 1990. In which year did the company make the minimum profit?
Based on how the graph turns out 15 years into the business is when the company made its minimal profit.
HELP!
y = 2.5x + 5.8
when x = 0.6
Answer:
[tex]y = 7.3[/tex]
Step-by-step explanation:
convert 235% to a decimal
Answer:
2.35
Step-by-step explanation:
Answer:
2.35
Step-by-step explanation:
move decimal point left 2
A rectangular swimming
pool has a perimeter of
150 meters. The length of
the pool is twice the width
of the pool. What is the
length of the pool?
Answer:
77
Step-by-step explanation:
perimeter=150
lets name the length x
length=x
width=x-2
2[x±x-2]=150
2x±2x-4=150
4x=154
154÷4=77
x=77
The length of the pool is 50 meters and this can be determined by using the formula of the perimeter.
Given :
A rectangular swimming pool has a perimeter of 150 meters. The length of the pool is twice the width of the pool.The following steps can be used in order to determine the length of the pool:
Step 1 - The formula of the perimeter of the rectangle is given by:
P = 2(l + w)
where l is the length of the rectangle and w is the width of the rectangle.
Step 2 - According to the given data, the length of the pool is twice the width of the pool that is:
l = 2w --- (1)
Step 3 - Now, substitute the known terms in the formula of the perimeter.
150 = 2(3w)
150 = 6w
w = 25 meters
Step 4 - Now, substitute the value of w in the equation (1).
l = 2(25)
l = 50 meters.
For more information, refer to the link given below:
https://brainly.com/question/897975
If x = 15 and y = 4, what is the value of the following expression?
x - 8 + 3y
A.
52
B.
19
C.
41
4 1/3 - 1 1/2
Subtract ROADBLOCK
Answer:
17/6
Step-by-step explanation:
Answer:
2 5/6
Step-by-step explanation:
4 1/3= 13/3
1 1/2= 3/2
lowest common denominator of 3 and 2 is 6 so:
13/3*2/2=26/6
3/2*3/3=9/6
26/6-9/6=17/6
17/6= 2 5/6
70 out of 350 calculators at a bookstore are scientific calculators. What percent of the calculators are scientific calculators?
6th grade math help me please...
Answer:
B and D
Step-by-step explanation:
a. 5t+4t =9t
b. t+5+4= t+9
c. 9t
d. 4×5×t= 20t
e. t(5+4)- do the inside the parenthesis first. =9t
the answer would me B and A because the answer isn't 9t so it would be those!! also the boxes on the right you multiply t×5 and t×4 and that would be 5t + 4t =9t
1. A beaker holding 1.5 litres of water is placed in a temperature-controlled room so that 120 mL of
water evaporates each day. Use "d' as the day and V(d) as the volume of water left in beaker.
a) Use function notation to write an equation for this situation.
b)
On which day there will be 900 mL of water left in the beaker? Show all calculations.
c)
Write the domain and range of the function in set builder notation (use variables provided).
Domain:
Range
Answer:
Oi tudo bem?
meu nome é Ana Kesia, e qual é o seu nome também?
Desculpe-me eu Nn consegui responder sua pergunta.
Mas mesmo assim, agradeço pelos pontos estava precisando.
tchau, tenha uma Ótima tarde!
Bons estudos nas suas atividades! ❤♥
In ΔKLM, m = 320 cm, ∠L=123° and ∠M=52°. Find the length of l, to the nearest centimeter.
Answer:
341
Step-by-step explanation:
l=
sin52/320sin123
≈340.572≈341