Answer:
17.75
Step-by-step explanation:
43.5 divided by 2 is 21.75
21.75 minus 4 equals 17.75
You're basically just using reverse operations to get back to the original number.
Tell whether the ordered pair is a solution of the inequality.
(-1,2)
8x + y > -6
Yes
No
Answer:
yes
Step-by-step explanation:
Which function does the graph represent?
Of(x) = (x - 2)2 + 3
Of(x) = -(x - 2)2 + 3
Of(x) = (x + 2)2 + 3
O f(x) = -(x + 2)2 + 3
Answer:
The function which represents the graph is:
[tex]y=-\left(x\:-\:2\right)^2+\:3[/tex]
Hence, option B is correct.
The graph is also attached.
Step-by-step explanation:
From the graph, it is clear that:
The vertex = (2, 3)
The y-intercept = (0, -1)
Let us check the equation
[tex]y=-\left(x\:-\:2\right)^2+\:3[/tex]
Determining the y-intercept:
The value of the y-intercept can be determined by setting x = 0, and determining the corresponding value of y.
substituting x = 0 in teh equation
[tex]y=-\left(x\:-\:2\right)^2+\:3[/tex]
[tex]y=-\left(0\:-\:2\right)^2+\:3[/tex]
[tex]y=-2^2+3[/tex]
[tex]y=-4+3[/tex]
[tex]y=-1[/tex]
Thus,
The point representing the y-intercept is: (0, -1)
Determining the vertex:
The vertex of an up-down facing parabola of the form ax² + bx + c is:
[tex]x_v=-\frac{b}{2a}[/tex]
As the equation is
[tex]y=-\left(x\:-\:2\right)^2+\:3[/tex]
Rewriting the equation [tex]y=-\left(x\:-\:2\right)^2+\:3[/tex] in the form ax² + bx + c:
[tex]y=-x^2+4x-1[/tex]
The Parabola params are:
[tex]a=-1,\:b=4,\:c=-1[/tex]
Thus,
[tex]x_v=-\frac{b}{2a}[/tex]
[tex]x_v=-\frac{4}{2\left(-1\right)}[/tex]
[tex]x_v=2[/tex]
Now plug in [tex]x_v=2[/tex] in the equation to find [tex]y_v[/tex]
[tex]y_v=-x^2+4x-1[/tex]
[tex]\:y_v=-\left(2\right)^2+4\left(2\right)-1[/tex]
[tex]y_v=-4+8-1[/tex]
[tex]y_v=3[/tex]
Therefore, the vertex of the equation is: (2, 3)
Hence, the function which represents the graph is:
[tex]y=-\left(x\:-\:2\right)^2+\:3[/tex]
Hence, option B is correct.
The graph is also attached.
what is the simplest from of this expression? (-3x^2 + 4x) + (2x^2 - x -11)
A. -x^2 + 3x + 11
B. -x^2 + 5x - 11
C. -x^2 + 5x + 11
D. -x^2 + 3x - 11
Answer:
D
Step-by-step explanation:
Variable Terms in 3x + 2 – 10 – 3x
Answer:
X
Step-by-step explanation:
because its the varible term
Shoes cost $135. If you save $27 with a sale, what is the percent discount?
Answer:
the precent discount is 20%
(27 / 135) x 100 = 20%
I hope this helps! ^^
☁️☁️☁️☁️☁️☁️☁️
CDEF is kite and m
A. 14
B. 56
C. 28
D. 62
Answer:
Step-by-step explanation:
56
(x - 1)(8x – 4) = 0
what is the factor
Answer:
the factor is x=1/2 or x=1
Step-by-step explanation:
hoped I helped:)
PLS HELP! Thank you pls
Answer:
Step-by-step explanation:
no
I’m stuck with this question plz help
Answer:
40 in i think if i am wrong sorry
Step-by-step explanation:
5in + 5in = 10 10 * 4 = 40
246.49
All you have to do to find the Circumference is use this formula
pi (3.14) R (radius) squared.
-Ɽ3₮Ɽ0 Ⱬ3Ɽ0
A 2-column table with 5 rows. Column 1 is labeled Number of friends helping with entries 0, 1, 2, 3, 4. Column 2 is labeled Hours to build tree house with entries 20, 20 minus 20 (0.10) = 18.0, 18 minus 18 (0.10) = 16.2, 16.2 minus 16.2 (0.10) = 14.6, question mark.
Peter figures he can build the entire tree house by himself in 20 hours. He figures that each additional friend who helps him would improve the time by 10%. He created a table using the algebraic expression n – n(0.10), where n is the previous number of hours.
To the nearest tenth of an hour, how long will it take to build the tree house if 4 friends are helping?
Answer:
x y x
Step-by-step explanation:
Answer: 13.1
Step-by-step explanation:
hope this helps
Robin has read 3/4
of a book. Mark said he had read 1/2
as much as Robin. What fraction of the book has Mark ready?
Answer:
3/8
Step-by-step explanation:
Answer:
3/8
Step-by-step explanation:
3/4 × 1/2 = 3/8I hope this helps!
Lindsay has scored 15 goals in 10 lacrosse games this season. a) What is her unit rate of scoring? b) How many goals might Lindsay score in 35 games? What assumptions do you make?
please help!!!!!!!!!!!!!
WILL MARK BRAINLIEST 15 POINTS
What is the probability that you would land on red for the first spin and then land on purple for the second spin?
1/5
1/10
1/25
0
Answer:
Step-by-step explanation:
Z. 1/25 it’s just a guess theough
Engineers must consider the breadths of male heads when designing motorcycle helmets. Men have head breadths that are normally distributed with a mean of 6.0 inches and a standard deviation of 1.0 inches. If one male is randomly selected, find the probability that his head breadth is less than 6.2 inches.
Answer:
0.57926
Step-by-step explanation:
Given that :
Mean, m = 6
Standard deviation, s = 1
P(x < 6.2)
Obtain the Zscore :
Zscore = (x - m) / s
Zscore = (6.2 - 6) / 1
Zscore = 0.2
P(Z < 0.2) = 0.57926 (Z probability calculator)
Probability of having head breadth less than 6.2 is 0.57926
find the slope of the line parallel to this equation: y=2/5x-4
Answer:
slope = [tex]\frac{2}{5}[/tex]
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = [tex]\frac{2}{5}[/tex] x - 4 ← is in slope- intercept form
with slope m = [tex]\frac{2}{5}[/tex]
Parallel lines have equal slopes
Thus the slope of a parallel line is m = [tex]\frac{2}{5}[/tex]
Question 8 of 10
Which equation represents the slope-intercept form of the line below?
y-intercept = (0,2)
slope = -3/7
Answer:
y = (-3/7)x + 2
Step-by-step explanation:
slope-intercept form is y = mx + b, where m = slope and b = y-intercept.
all you need to do is plug the values into the equation! :)
since your slope is (-3/7), plug that in for m.
y = mx + b ⇒ y = (-3/7)x + b
and since your y-intercept is 2, plug that in for b.
y = (-3/7)x + b ⇒ y = (-3/7)x + 2
therefore, the line's equation in slope-intercept form is y = (-3/7)x + 2.
don't worry about the parentheses, i only put them in there to separate the 7 in -3/7 from x. i'm not good at putting equations in here on brainly lol i just wanted to make sure you didn't think that it was -3 over 7x.
i hope this helps! have a lovely day <3
George and Lea each toss a tetrahedral die with faces numbered 1 through 4, and then multiply the two resulting numbers. If the product is less than 9, George wins; otherwise, Lea wins. What is the probability that Lea will win? Express your answer as a common fraction.
Answer:
I think the total number of combinations of 3 from 6 = 6C3 = 20
All possible combinations of 3 which have a product divisible by 3 must contain either a 3 or a 6.
So the number not divisible must be 3 combinations from the number 1, 2, 4, and 5.= which is 4
So the required probability is 20-4 ? 20 = 16/20 = 0.8 Answer
Hope this help you! :)
The answer choices are the bottom ones
Answer:
b) x = 31
Step-by-step explanation:
It's an isosceles triangle, meaning the base angles are congruent as well.
can someone help? i need help ♀️
Answer:
Mean: 29.6
MAD: 10
Step-by-step explanation:
Answer:
Mean = 29.6
MAD = 10
Step-by-step explanation:
For the mean, just add all of the points together and divide it by 10 since there are 10 games.
For the MAD, use the mean and subtract is from each of the games. As an example, just do 23-29.6 and ignore if it is a negative sign. Do it for all and then add up the leftovers. Then divide it by the 10 games.
(6.6+1.4+1.6+8.4+10.6+8.4+15.4+4.6+26.6+16.4)/10
Check out a khan academy video about it if you're having trouble
Darrien purchases some clothes for a total of $26.50, before tax. Sales tax in his state is 5 percent. What is the total price he has to pay for the clothes?
does someone know tha answer??
Answer:
either 5 or 6 months
Step-by-step explanation:
Tom M Jerry
500 1 125
475 2 175
450 3 225
425 4 275
400 5 325
375 6 375
A 2 month membership at the gym costs $25.if you
want to be a member for 8 months. how much will
you need to pay?
$1
because 2 months is 25. so 8 months divided by 2 is 4 so 4 times 25. is 1 dollar
Find the distance between the points given. (0, 6) and (5, 12)
62hshhsjshsjsjsjsjjsjsjs
B. Perform the following operations on polynomials.
1. (2x + 3y) - (5x – 2y)
2. (9x²y + 5xy - 2) + (-12x²y – 3xy + 2)
3. (8x + 2y - 3z") + (42* - 5x + 3y)
4.(- 10x*yz? + 5xyz-2) -(10xyz + x - 10 xy)
5. (3x + y) - (2x + z)
pahelp po plss asap
展开时的公式:
+ + > +
- - > +
+ - > -
- + > -
ishdkshdjdicbekjednejjdjxjxj w d f
Answer: x=73 y=73 z=107
Step-by-step explanation:
The angel of x is 73° because opposite angles are always the same.
The angle of y is also 73° because it is on a parallel line so angles on a parallel line would be the same.
Then the angle of z is 107° because the other side of z would be 73° so you need to deduct this from 180° (because a straight line always adds up to 180°).
express each of the following percentages as a fraction.28% 158%
Answer:
28% = 7/25 and 158% = 79/50
Step-by-step explanation:
To convert a percent into a fraction, you have to put the value of the percent over 100.
For 28%: 28/100
28 and 100 are both divisible by 4, so the fraction reduces to 7/25.
For 158%: 158/100
158 and 100 are both divisible by 2, so the fraction reduces to 79/50. If you teacher doesn't want you do use improper fractions, then 79/50 can further be reduced and becomes [tex]1\frac{29}{50}[/tex].
Hope this helped!
4. Encuentra dos sistemas de ecuaciones lineales
que tengan como solución el punto dado
Recuerda: para que un punto pertenezca a la
recta, reemplazas las coordenadas en la ecuación
a) (-2,1)
b) 3,-2
c) 0,5; -1)
d) (0,4
Answer:
ggghyhjjudeieikwkkskkskskkskkkwkkskskdkejjsjsuusuydueujejekkekejjje
The system of equations for each point are mentioned below.
What is a mathematical function, equation and expression? function : In mathematics, a function from a set X to a set Y assigns to each element of X exactly one element of Y. The set X is called the domain of the function and the set Y is called the codomain of the function.expression : A mathematical expression is made up of terms (constants and variables) separated by mathematical operators.equation : A mathematical equation is used to equate two expressions.Given is to find two systems of linear equations that have the given point as a solution.
For the point (- 2, 1), we can write the system of equations as -
1 = - 2m₁ + c₁
1 = - 2m₂ + c₂
For the point (3, - 2), we can write the system of equations as -
- 2 = 3m₁ + c₁
- 2 = 3m₂ + c₂
For the point (0.5, 1), we can write the system of equations as -
1 = (1/2)m₁ + c₁
1 = (1/2)m₂ + c₂
For the point (0, 4), we can write the system of equations as -
4 = c₁
4 = c₂
Therefore, the system of equations for each point are mentioned above.
To solve more questions on functions, expressions and polynomials, visit the link below -
brainly.com/question/17421223
#SPJ2
{Translation in english -
Find two systems of linear equations
that have the given point as a solution
Remember: for a point to belong to the
line, plug the coordinates into the equation
a) (-2.1)
b) 3,-2
c) 0.5; -1)
d) (0.4)
}
The sum of twice a number and five is greater than three times the number minus three.
Answer:
x<8
Step-by-step explanation:
2x+5>3x-3
2x+8>3x
8>x
Answer:
n < 8
Step-by-step explanation:
Let n represent the unknown number. Then:
2n + 5 > 3n - 3
Collecting like terms:
8 > n or n < 8
Six times the lesser of the two consecutive even integers is 4 times the greater even integer. What are the integers?
Answer:
Integers are 4 and 6
Step-by-step explanation:
Let the two consecutive even integers be [tex]x,x+2[/tex] such that [tex]x<x+2[/tex]
Six times the lesser of the two consecutive even integers is 4 times the greater even integer.
So,
[tex]6x=4(x+2)\\6x=4x+8\\6x-4x=8\\2x=8\\x=4[/tex]
Other integer [tex]=x+2=4+2=6[/tex]