Answer:
D. Dilation and reflection
Step-by-step explanation:
There are 4 main types of transformations, rotation, reflection, translation, and dilation. 3 of these transformations are defined as rigid, rigid means that the transformation preserves angles and distance between points. If these aspects are preserved than the image is congruent. The only non-rigid transformation listed is dilation, therefore D must be correct.
Answer:
d
Step-by-step explanation:
help please!! i don’t understand this one!
Answer:
C, D
Step-by-step explanation:
This equation can be solved any of several ways. One that doesn't require much thought is using the quadratic formula.
For ax² +bx +c = 0, the solutions are ...
[tex]x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}[/tex]
In the given equation, a=2, b=11, c=5, so this becomes ...
[tex]x=\dfrac{-11\pm\sqrt{11^2-4\cdot2\cdot5}}{2\cdot2}=\dfrac{-11\pm\sqrt{81}}{4}\\\\x=\dfrac{-11\pm9}{4}=\left\{-\dfrac{20}{4},-\dfrac{2}{4}\right\}=\{-5,-\frac{1}{2}\}[/tex]
The solutions are ...
C. x = -5
D. x = -1/2
_____
My personal favorite is using a graphing calculator. The solutions are the x-intercepts of the expression on the left. That is, where its value is zero, as the equation says.
The decline of salmon fisheries along the Columbia River in Oregon has caused great concern among commercial and recreational fishermen. The paper 'Feeding of Predaceous Fishes on Out-Migrating Juvenile Salmonids in John Day Reservoir, Columbia River' (Trans. Amer. Fisheries Soc. (1991: 405-420)) gave the accompanying data on
y= maximum size of salmonids consumed by a northern squaw fish (the most abundant salmonid predator) and
x= squawfish length, both in mm.
Use the following statistics to give the equation of the least squares regression line.
x=524.880,
y=413.975,sx=12.251,sy=12.300,
r=0.9562
options:
a) ^y=0.960xâ89.910
b) ^y=0.960x+89.910
c) ^y=â89.910x+0.960
d) ^y=0.952x+89.910
e) ^y=0.952xâ89.910
f) None of the above
Answer:
the correct answer is not there. here it is:
^y = 0.960x - 89.910
Step-by-step explanation:
we have regression line equation as:
^y = a+bx
we have the following details available
x = 524.88
y = 413.975
Sx = 12.251
Sy = 12.300
r = 0.9562
we have to find values of a and b
b = rSy/Sx
= 0.9562(12.3)/12.251
= 11.76126/12.251
= 0.960
a = y - intercept
= 413.975-0.96(524.88)
= 413.975-503.8848
= - 89.9098
a = -89.910
putting these values into the equation, we have:
^y = -89.910 + 0.9600x
which is also
^y = 0.960x - 89.910
Devon pays $8.16 for 12 pounds of sugar. What is the price for 10
pounds of sugar
Answer:
$6.80
Step-by-step explanation:
$8.16 ÷ 12 = $0.68
$0.68 x 10 = $6.80
Can someone help me!!plis
Answer:
I would love to but I'm not sure what the answer is. I'm so sorry
Step-by-step explanation:
Please help with my Probability Sheet. Integrated Math 2. Spin or Roll.
Answer:
I can't see the pdf
Step-by-step explanation:
please put the image up
Complete the following statement.
When converting a decimal to a fraction, the digits to the right of the decimal point become th
of the
fraction.
numerator
denominator
NEXT QUESTION
READ NEXT SECTION
ASK FOR HELP
TURN IT IN
Answer:
it becomes the numerator
Step-by-step explanation: i read it in my lesson
round 93.0129 to the nearest thousandth
Answer:
93.013
Step-by-step explanation:
the ansewer is 93.013
Determine if the ratio or rates are equivalent: 24 points scored in 4 games; 48 points scored in 10 games ASAP ANSWER IT I NEED HELP
Answer:
Step-by-step explanation:
Yes: 24 points/4 games = 6 points per game while 48 points/10 games = 24 points in 5 games.
x^2+ bx +c= (x + 3) (x + m)
Answer:
x= c-3m/m+3-b
Step-by-step explanation:
use Math way
Step-by-step explanation:
(b-m-3)x-3m+c =0
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hope u got it!!
(81x^2)^1/2
Simplify.
Answer:
9x
Step-by-step explanation:
HELP ASAP TAKING A TEST I DONT KNOW HOW TO DO THESE I HAVE 1 HOUR PLEASE!
Answer:
diagonal is 11.14 cm
Step-by-step explanation:
We start by writing the equation for the width (w) in terms of the length (L):
w = 2 L - 8
from the area = w * L = 62
we replace w in it: w * L = (2 L -8) * L = 62
2 L^2 - 8 L = 62
2 L^2 - 8 L - 62 = 0
extract 2 common factor:
2 (L^2 - 4 L - 31) = 0
Using quadratic formula we get:
[tex]L=\frac{4+/-\sqrt{4^2-4(1)(-31)} }{2} \\L=\frac{4+/-\sqrt{140} }{2}\\L=7.916\\or\\L=-3.916[/tex]
So, we pick the positive answer L = 7.916 cm
Then we now know the with of the rectangle as well:
w = 2 * L - 8 = 2 * 7.916 - 8 = 7.832 cm
Now we estimate the diagonal of the rectangle using the Pythagorean theorem:
[tex]diag=\sqrt{7.916^2+7.832^2}\approx11.1356\,\,cm[/tex]
which rounded to two decimal places is 11.14 cm
A factory can produce 60 TVs in 7 days. How long does it take to finish 400 TVs?
Answer:
57.12, but being precise and accurate, you might wanna put 58.
Step-by-step explanation:
So, there's this guy, his name is calculator.
The tailor determines that the cost of material varies directly with the amount of material. The cost is $42 for 14 yards of material. What is the cost for 70 yards of material?
Answer:
[tex]the \: cost \: for \: 70 \: yards \: of \: material \: is : \\ \: \$210.[/tex]
Step-by-step explanation:
[tex]let \: the \: cost \: of \: material \: be \to \: c_{m} \\ let \: the \: amount \: of \: material \: be \to \: a_{m} \\ then \: the \: expression \: is: \\ c_{m} \: \alpha \:a_{m} \\ c_{m} \: = k a_{m} \\ if \: c_{m} = 42 \: and \:a_{m} = 14 \\ then \: \to \\ k = \frac{c_{m} }{a_{m}} = \frac{42}{14} \\ k = 3 \to \: this \: is \: the \: variation \: constant. \\ when \: a_{m} = 70 : \: then \to \\ c_{m} = k a_{m} = 3 \times 70 \\ \boxed{ c_{m} = \: 210}[/tex]
♨Rage♨
You are given space that limit as h rightwards arrow 0 of fraction numerator g (3 + h) - g (3)/h = 7 and g (3) = 9. Find m and b so that the tangent space line of g (x) at x = 3, y = m x +b.
Answer:
m = 7 and b = -12 therefore y = 7x - 12
Step-by-step explanation:
From the question we are given the first derivative of the function g to be 7, and it is known that the first derivative of a function is the slope, therefore the slope, m = 7.
Since we are looking for 'b' at x = 3 and we know that our slope is 7, we have:
g(3) = 7*3 + b. We are given g(3) = 9 so we have:
9 = 21 + b and b = -12.
Therefore, m = 7 and b = -12 and the equation of the line is y = 7x - 12.
Which of these fractions is a repeating decimal
1/4
2/3
4/5
3/6
will give out brainliest, a THX, friend request, and i'll rate ur answer
what is the reflection of (5, -3.5) across x-axis
Answer:
(-5,-3.5)
Step-by-step explanation:
Answer:
When you reflect a point across the x-axis, the x-coordinate remains the same, but the y-coordinate is transformed into its opposite (its sign is changed). If you forget the rules for reflections when graphing, simply fold your paper along the x-axis (the line of reflection) to see where the new figure will be located.
Step-by-step explanation:
can someone help please
Answer:
es
375
Step-by-step explanation:
Gabi has 7 bags of apples with x apples each. a. Write an expression to represent the total number of apples.
Answer:
7x
Step-by-step explanation:
What does m equal ? Please help I need this turned in by tomorrow.
Answer:
gnilr
Step-by-step explanation:
Answer:
M equals 1.......... .
PLEASE HELP!! Find the market equilibrium point for the following demand and supply equations
9514 1404 393
Answer:
(p, q) = (16, 20)
Step-by-step explanation:
You can add the two equations together to make one from which q can be eliminated:
(4p) +(3p -q) = (-q +84) +(28)
7p -q = -q +112 . . . . simplify
7p = 112 . . . . . . . . . . add q
p = 112/7 = 16
Using this value in the second equation, we get ...
3·16 -q = 28
48 -28 = q = 20 . . . . . add q-28
The equilibrium point is (p, q) = (16, 20).
What's the answer? please help
Answer:
it's 3.
Step-by-step explanation:
10-4/5-3
6/2
3..
average of 20 numbers is zero how many of them can be greater than zero?
Answer:
The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero? Average of 20 numbers = 0. Therefore Sum of 20 numbers = (0 x 20) = 0 It is quite possible that 19 of these numbers may be positive and if their sum is a, then 20th number is (-a).
Step-by-step explanation:
At the sixth-grade school dance, there are 132 boys, 89 girls, and 14 adults.
A. Write the ratio of the number of boys to the number of girls.
B. Write the same ratio using another form (A: B vs. A to B).
C. Write the ratio of the number of boys to the number of adults.
D. Write the same ratio doing another form.
Answer:
Step-by-step explanation:
A) Boys : Girls
132 : 89
66 : 89
33 : 89
B) Boys to Girls
132 to 89
66 to 89
33 to 89
C) Boys : Adults
132 : 14
66 : 7
33 : 7
D) Boys to Adults
132
-----
14
xxxxxxxx
66
-----
7
xxxxxxxx
33
------
7
I'm not sure but here you go
Simplify:
(7 + 2i)(9 - 6I)
Answer:
27
Step-by-step explanation:
hope this helped <3
Round 43.586 to the nearest tenth. Pleaseee help ASAP
Answer:
43.6
Step-by-step explanation:
I hope this helps you :)
Answer:
43.59
Step-by-step explanation:
43.59 because it is
Find the perimeter of the figure
Answer:
20 m
Step-by-step explanation:
For the perimeter, add all the sides together:
4 + 6 + 3 + 5 + 2 = 20 m
Answer:
Step-by-step explanation: Perimeter of figure is = sum of all sides
= 6m+3m+5m+2m+4m
= 9m+7m+4m
= 16m+4m
= 20m
30 points to HELP PLEASE and THANK U
A wheel of a child's bicycle has a circumference that is 50% of the circumference of a child's mountain bicycle wheel. The child's bicycle wheel has a circumference of 37.7 inches. a. What is the radius (to the nearest inch) of the child's bicycle wheel? of the child's mountain bicycle wheel? b. The child's mountain bicycle wheel takes 2 seconds to make 3 revolutions . How fast(to the nearest inch per second) is the bicycle moving?
Answer:
36960in per minute
Step-by-step explanation:
Answer:
a) 6 inchesb) 113 inches per secondStep-by-step explanation:
Let the child bicycle wheel radius be x
Then its circumference is
C = 2πxa) Solving for x
37.7 = 2*3.14xx = 37.7/6.28x = 6.0 inb) Mountain bicycle has twice the circumference of a child bicycle
In 2 seconds it makes 3 revolutions
It makes the distance of
d = 3*2*37.7 = 226.2 inches in t = 2 secondsSpeed = d/t
Speed is:
226.2/2 = 113 inches/second
Measures of two anges 48 degrees are shown in a triangle. Write a equation showing the value of X
Answer:84
Step-by-step explanation:
Since each trinagle's interior angles which is the angles in side the triangle always add up to 180 you could add the 2 given and then subtract by 180 so 48+48 which equals 96 then 180-96 which will give you 84 as x
Answer
48+48+x=180 x=84
Step-by-step explanation:
The sum of the 3 interior angles of a triangle is always the sum of 180 degrees.
In short, this means that all three angles have to equal up to 180 degrees
48+48=96
180-96=84 x=84
To check your answer add
48+48+84 should equal 180. It does
Hope this helps
A standard showerhead dispenses 50 gallons of water in 20 minutes. At this rate, how many gallons of water will a standard showerhead dispense in 5 minutes?
Answer:
12.5
Step-by-step explanation:
Answer:12.25
Step-by-step explanation:
11.
April is going to the bakery to purchase donuts and cinnamon rolls for the office personnel. She must purchase at least 30 items. She has collected only $30, so total cost must be no more than $30. If d represents donuts that cost $0.75 each and r represents cinnamon rolls that cost $1.25 each, which system of inequalities can be used to represent the region for the number of donuts and cinnamon rolls April could purchase?
A.d + r ≥ 30
0.75d + 1.25r ≤ 30
B. d + r ≥ 30
1.25d + 0.75r ≤ 30
C. d + r ≤ 30
0.75d + 1.25r ≥ 30
D. d + r ≤ 30
1.25d + 0.75r ≥ 30
Please answer quickly :)
The system of inequalities that can be used to represent the region for the number of donuts and cinnamon rolls April could purchase is $0.75d + $1.25r ≤ $30
April cannot spend more than $30. Thus, the inequality sign that would be used is ≤ (the less than or equal to sign).
April wants to purchases two items, cinnamon rolls and donuts. The donuts cost $0.75 per dollar and cinnamon rolls cost $1.25 per dollar.
The total amount April can spend on donuts = $0.75 x d = $0.75d
The total amount April can spend on cinnamon rolls = $1.25 x r = $1.25r
The sum of $0.75d and $1.25r has to be less than $30
This can be represented with this inequality: $0.75d + $1.25r ≤ $30
A similar question was solved here: https://brainly.com/question/18649886?referrer=searchResults
