Answer:
domain: -infinity < x <infinity or (-infinity, infinity)
range: -infinity < f(x) < infinity or (-infinity, infinity)
Step-by-step explanation:
Arithmetic Summation
Find the sum of the first n terms of the arithmetic series.
40 + 37 + 34 +31 +...
n=20
Answer:
142
Step-by-step explanation:
hope this help love y all!
Kathryn is 1.6 meters tall. Convert her height to feet. Round to the nearest tenth.
Answer:
1.6 m = 5.3 ft
What percent of Miss Colwell's day does she spend watching Netflix if she
watches 4 hours a night?
a) 25%
b) 6%
c) 16.7%
d) 33.33%
A day is 24 hours.
She watches tv 4 out of 24 hours.
4/24 = 1/6 = 0.167 x 100 = 16.7 %
The answer is C. 16.7 %
Question 1 of 10
Which of the following is the quotient of the rational expressions shown
below?
2x-3
X-5
-
3х -1
57
A.
X - 4
5x2
B
10x2 - 11x - 6
9x3 - 3x2
C.
6x2 - 11x +3
5x3 - 25x2
-2x +3
Answer:
C. 6x2-11x+3/5x3-25x2
Step-by-step explanation:
AP3X
solve the system by substitution.......
Answer:
x=3
y=15
Step-by-step explanation:
y=5x
y=-4x+27
5x=-4x+27
+4x +4x
9x=27
/9 /9
x=3
y=5x
y=5(3)
y=15
I really need help with this stadistic problem
Answer:
the mean is 5.8 and the median is 6
Step-by-step explanation:
if you multiply the test scores by their frequencies and then add up all those values, and then divide by the number of test scores, you get 5.8
for the median, you write out all the test scores in order from least to greatest and how many times they appear. then if you go to the middle of that number line, youll find the median
If a ball is dropped on the ground from a height of h meters, then the ball reaches the ground with the velocity 4.43h m/sec.
Find the velocity with which a ball reaches the ground when it is dropped from a height of 32 m.
Answer:
v = 141.76 m/s
Step-by-step explanation:
Given that,
The ball reaches the ground with a velocity of 4.43h m/sec.
We need to find the velocity of the ball at a height of 32 m.
Since, v = 4.43h
Put h = 32 m in the above expression.
v = 4.43(32)
v = 141.76 m/s
So, the velocity of the ball is equal to 141.76 m/s.
Please answer the question in the picture Thxx
Answer:
A) 3, 4, and 5
D) 9, 12, and 15
Step-by-step explanation:
A) 3, 4, and 5
D) 9, 12, and 15
If you square and add the first two, you get the third one squared. That doesn’t work for B and C.
If 2 power x= 1, then find the value of x.
Answer:
x = 0
Step-by-step explanation:
2^x = 1
The only way a number can equal one when there's an exponent is when the exponent is 0
x = 0
2^0 = 1
Find the surface area of the composite solid.
Answer:
185ft squared
Step-by-step explanation:
since this is a composite solid, all we have to do is use the 2 formulas:
b x h / 2 (Triangles on the pyramid)
l x w (Rectangular faces)
to solve the surface area of the composite figure.
Find the area of a circle with radius equal to 7π
Answer:
49π³
Step-by-step explanation:
area = πr²
area = π(7π)² = 49π³
Answer:
1519.3 sq units
Step-by-step explanation:
A = πr²
A = π(7π)²
A = 49π³
A 12-sided sold has faces numbered 1 to 12. The table shows the results of rolling the solid 200
times Find the experimental probability of rolling a number greater than 10
Results
Number
1 2 3 4 5 6 7 8 9 10 11 12 Total
rolled
Frequency 17 13 15 15 17 14 15 32 16 14 15 17 200
The experimental probability of rolling a number greater than 10 [#/#] is
(Simplity your abswer)
Answer:
4/25 maybe?
Step-by-step explanation:
It takes 3 hour 15 minutes to fly from city a to city b at constant speed. Find how long the journey takes if
A) the speed is 1×1÷2 times of the original speed and
B) if the speed is three-quarters of the original speed.
Answer:
a) t= 2hours and 10 minutes
b) t=4hours and 20 minutes
v1t1=v2t2
Answer:
Step-by-step explanation:
rate = distance / time distance is constant (a-b) so call it D
time = distance / rate rate = speed (ie miles per hour = mph)
time = distance / speed
A) if the new speed is 1.5 of the original speed
original time = 3.25 hours or 195 minutes
3.25 = D / 1 new time = D/1.5 find new time
3.25 is to D as new time is to D/1.5
3.25/D = new time / D/1.5 multiple D/1.5 on both sides
(3.25/D) ( D/1.5) = new time the distance D cancels
3.25 (D / D) / 1.5 = new time
3.25 / 1.5 = 2.167 hours or 2 hours and 10 minutes
B) if the speed is 3/4 the original speed
original time = 3.25 hours or 195 minutes
3.25 = D / 1 new time = D/(3/4) find new time
3.25 is to D as new time is to D/0.75
3.25/D = new time / D/0.75 multiple D/0.75 on both sides
(3.25/D) ( D/0.75) = new time
3.25 (D / D) / 0.75 = new time
3.25 / 0.75 = 4.333 hours or 4 hours and 20 minutes
help please, asap. thank you
Answer:
KL = 28
YZ = 76
LZ = 38
Step-by-step explanation:
Because J K and L are midpoints, the segment lengths are half of the segments from the XYZ triangle.
Think of it like this: ZLK is just ZXY scaled to half.
From that we get:
KL = YX/2 = 56/2 = 28
YZ = 2*KJ = 2*38 = 76
LZ = YZ/2 = 76/2 = 38
Answer: KL= 28
Explanation: YJ and JK are 28 each and together they add up to 56. Since KL has the same measure as YJ, its measure is 28.
Answer: YZ= 76
Explanation: JK is half the measure of ZY, so if you multiply 38 by 2 you get 76.
Answer: LZ= 38
Explanation: LZ=JK, so LZ=38
Solve the following inequality. x >-1
Answer:
( − 1 , ∞ )
Step-by-step explanation:
( − 1 , ∞ )
(-7)+b=(-11) what does b=
Answer:
-4 or 4
Step-by-step explanation:
:)
Please i need help :(
Answer:
Step-by-step explanation:
7 is 1
8 is 2
What is 672 divided by 12?
Answer:
56
Step-by-step explanation:
Answer:
56
Step-by-step explanation:
672 ÷ 12 = 56
someone answer this please
Answer:
7.5
Step-by-step explanation:
The decimal form would be 7.549... when put in a calculator. When rounded, it will be 7.5
What is the slope of the line perpendicular to 2x-3y=8
Answer:
y = - [tex]\frac{3}{2}[/tex]x - [tex]\frac{8}{3}[/tex]
Step-by-step explanation:
2x-3y=8
rewrite, solve for y
3y = 2x - 8
divide by 3
y = [tex]\frac{2}{3}[/tex]x - [tex]\frac{8}{3}[/tex]
perpendicular = negative reciprocal slope = - [tex]\frac{3}{2}[/tex]
6/7 - 1/3
Your answer
11/21
b/t/w you con go on this website called calculator soup and it has fraction calculators
and the website it self has nothing to download im pretty sure it doesnt
Help me please , thank you so much
Answer:
B.......
Step-by-step explanation:
you can check ✔️
this sol this answer
Help me plz thank you
Answer:
[tex]\text{Axis of symmetry: }x=-2\\\text{Vertex: }x=-2,\ y=10[/tex]
Step-by-step explanation:
[tex]y=-2x^2-8x+2\\\\\text{Solving }y=0:\\-2x^2-8x+2=0\\x=-2\pm\sqrt{5}\text{ (Using the quadratic formula)}\\\\\text{Finding mid-point (x-coordinate):}\\\frac{-2+\sqrt{5}-2-\sqrt{5}}{2}=-2\\\\\therefore\text{Vertex: }x=-2,\ y=10\\\text{Axis of symmetry: }x=-2[/tex]
HELP PLEASE BRAINLIEST AND ITS EASY\
What is the mean of the values in the dot plot?
Enter your answer in the box.
Answer: 2
Step-by-step explanation:
2+2+1+3=8/4=2
A website administrator is considering using one of the two models above to predict the total number of purchases, P, made x weeks after the website's advertisin(g campaign begins. How many more purchases are predicted by the exponential model than by the linear model 5 weeks after the advertising campaign begins?
P = 2000x
P= 500(2^x)
A. 6000
B. 8000
C. 10,000
D. 16,000
9514 1404 393
Answer:
A. 6000
Step-by-step explanation:
Use x=5 and evaluate each model.
Linear model
P = 2000(5) = 10,000
Exponential model
P = 500(2^5) = 500(32) = 16,000
The difference in the predicted value is ...
16,000 -10,000 = 6,000 . . . more are predicted by the exponential model
Quincy is having a sale at his store. He is selling a table for $450. If the sales tax is 8.5%, then how much will a customer need to pay in taxes if they buy the table?
Answer:
488.25
Step-by-step explanation:
need help with linear function 2 sad face
the awnser is graph A.
you find the two point that the line is going through and count the squares going up (rise) and count the squares going a cross (run). and that is the slope and the -3 is where the point is on the y intercept
A bicycle is originally priced at $80 the store owner gives a discount in the bicycle is know priced at $60 enter the percent markdown for the cost of the bicycle
Answer:
25%
Step-by-step explanation:
Since we know that the markdown is $20 by subtracting 80-60 , we find out what percent of 20 is 80. To do that you do 20/80, which is 0.25, or 25 percent.
WILL MARK BRAINLEST
Which statement cannot be true of the graph of a proportional relationship?
A It is not linear.
B It is a straight line.
C It includes the origin.
D It shows a constant ratio.
Answer:
A
Hope that helps!
Step-by-step explanation:
An expression is shown below:
3x3y + 12xy − 9x2y − 36y
First Rewrite the expression so that the GCF is factored completely. Show the steps of your work.
Then Rewrite the expression completely factored. Show the steps of your work.
Answer:
Part A: so the GCF is 3y,
We need to rewrite the equation such as:
-36 as -12 · 3, -9 as -3 · 3, 12 as 4 · 3
It will look like this:
3x^3 y +4 · 3xy + 3 · 3x^2 y + 4 · 3 · 3y
We then need to factor out 3y:
3y(x^3 + 4x - 3x^2 - 12)
Part b: factor out completely
3y(x^3 + 4x - 3x^2 - 12)
So, we need to do the following:
3y{x^2(x-3) + 4 (x-3)}
we then get the final factor: 3y(x - 3) (x^2 + 4)
Step-by-step explanation:
The factored expression is:
[tex]3y(x^3 + 4x - 3x^2 - 12)[/tex]
------------------------
To factor the expression:
First, we need to find the greatest common factor of the numeric and symbolic coefficients.Then, we divide each term of the expression by it's gcf.------------------------
The expression is:
[tex]3x^3y + 12xy - 9x^2y - 36y[/tex]
------------------------
The numeric coefficients are: 3, 12, 9, 36
The gcf of the numeric coefficients is:
3 - 12 - 9 - 36|3
1 - 4 - 3 - 12
The gcf of the numeric coefficients is 3, as 3 is the only number by which 3, 12, 9 and 36 are all divisible.
------------------------
The symbolic coefficients are: [tex]x^3y, xy, x^2y, y[/tex]
The only common term is y, so y is the gcf of the symbolic coefficients.
------------------------
The gcf of the entire expression is the multiplication of the gcfs of the numeric and of the symbolic coefficients, so it is 3y.
Now, to factore the expression:
[tex]3x^3y + 12xy - 9x^2y - 36y = 3y(\frac{3x^3y}{3y} + \frac{12xy}{3y} - \frac{9x^2y}{3y} - \frac{36y}{3y}) = 3y(x^3 + 4x - 3x^2 - 12)[/tex]
The factored expression is:
[tex]3y(x^3 + 4x - 3x^2 - 12)[/tex]
A similar problem is given at https://brainly.com/question/20691631