Answer:
(rx)(4) = 8
Step-by-step explanation:
Given that,
[tex]r(x)=2\sqrt{x}[/tex]
and
[tex]s(x)=\sqrt{x}[/tex]
We need to find the value of (rs)(4).
[tex](rs)=2\sqrt x \times \sqrt x\\\\=2\times (\sqrt x)^2\\\\=2x[/tex]
[tex](rs)=2x\\\\=2\times 4\\\\=8[/tex]
So, the value of (rx)(4) is equal to 8.
an item costs x dollars and then a 20% discount is applied
Answer:
If an item is x dollars and 20% discount is applied, the new price will be: 0.8x
Step-by-step explanation:
100 - 20%(20) = 80
80 = 80% or 0.8
So, the remaining of the price of x will be 0.8x.
What is the equation for the product of a number g and 5 is 30?
Answer:
6?
Step-by-step explanation:
8.36 Football and Brain Size: Randomization Test Exercise 8.35 describes a study examining hippocampus volume in the brain between controls who have never played football, football players with no history of concussion, and football players with a history of concussion. The data are available in FootballBrain. Use StatKey or other technology to conduct an ANOVA randomization test to determine whether there is a significant difference in mean hippocampus volume between the three categories. What is the F-statistic for the observed data
Answer:
Since the calculated F= 2.8657 does not lie in the critical region F (2,2)≥ 19 we conclude that there no difference between the means.
Since the calculated F= 205.0819 lies in the critical region F(1,2) ≥ 18.51 we conclude that there is a difference between the standard deviations of the three groups.
The F- statistic for the observed data is 0.101 as calculated by F- test in excel.
Step-by-step explanation:
To conduct an ANOVA randomization test we perform anova without replication in excel.
The data for the test is
Mean Standard Deviation Sample Size
Never
Played Football 7602.5 1074 25
FB with no History 6459.2 779.9 25
FB with Concussion 5734.6 593.4 25
Total 6598.8 1133.5 75
Anova: Two-Factor Without Replication
SUMMARY Count Sum Average Variance
Row 1 2 8676.5 4338.25 21310656.13
Row 2 2 7239.1 3619.55 16127224.25
Row 3 2 6328 3164 13215968.72
Column 1 3 19796.3 6598.766667 886871.7433
Column 2 3 2447.3 815.7666667 58708.90333
ANOVA Table
Source Sum of Degrees Mean
of Variation Square of freedom Squares
SS df MS F P-value
B/w Rows 1401945.703 2 700972.8517 2.8657 0.259
B/w Col 50164633.5 1 50164633.5 205.0819 0.00484
Error 489215.59 2 244607.795
Total 52055794.79 5
Set up the null and alternate hypotheses :
H0 ; there's no difference between the means and
there's no difference between the standard deviations
against the claim
Ha: there's a difference between the means and
there's a difference between the standard deviations
The significance level is chosen at 0.05
The test statistics to use are
F1= estimated variance from Between Means/ estimated variance from Error SS
F1= s1²/s3²
F1= estimated variance from Between Standard Deviations / estimated variance from Error SS
F2- s2²/s3²
with υ1= (2,2) and υ2(1,2) degrees of freedom.
The critical regions for F (2,2)≥ 19 for 0.05 significance level
and F(1,2) ≥ 18.51 for 0.05 significance level
Since the calculated F= 2.8657 does not lie in the critical region F (2,2)≥ 19 we conclude that there no difference between the means.
Since the calculated F= 205.0819 lies in the critical region F(1,2) ≥ 18.51 we conclude that there is a difference between the standard deviations of the three groups.
The F- statistic for the observed data is 0.101 as calculated by F- test in excel.
Can you help me with this?
Answer:
B =30 yd²
Step-by-step explanation:
total area
= area of rectangle + area of triangle
=(6*4)+(1/2 * 3 * 4)
=30
Answer:
30
Step-by-step explanation:
The area formula for trapezoid- A=1/2*h*(b1+b2)
So- 1/2*4*(6+9)
what is
r+15=36
[tex]r + 15 = 36[/tex]
Answer:
Step-by-step explanation:
R=21
Hi hi help help please please
Answer:
50.24 or [tex]16\pi[/tex]
Step-by-step explanation:
N/A
the lenght of the longer leg of a right triangle is 9 ft longer than the lenght of the shorter leg x. The hypotenuse is 9 ft shorter than twice the lenght of the shorter leg.
Answer:
see below
Step-by-step explanation: 5 23 8 03
the lenght of the longer leg of a right triangle is 9 ft longer than the lenght of the shorter leg x. The hypotenuse is 9 ft shorter than twice the lenght of the shorter leg.
shorter leg = x
longer leg = x + 9
hypotenuse = 2x - 9
Pythagorean theorem = a² + b² = c²
shorter-leg² + longer-leg² = hypotenuse²
x² + (x+9)² = (2x - 9)² solve for x
x² + (x+9) (x+9) = (2x - 9)(2x - 9)
x² + (x²+18x+81) = (4x² - 36x + 81)
(2x²+18x+81) = (4x² - 36x + 81)
0 = 2x² -54x
0 = x(2x - 54)
0 = x and 0 = 2x -54
54 = 2x
27 = x
shorter leg = 27
longer leg = 36
hypotenuse = 45
divided all the values by 9 and you get a 3, 4, 5 right triangle, so the answer checks correct
find each sum (-4y+3) + (11y-5)
Answer:
7y−2
Step-by-step explanation:
Solve for x.
2x + 4x + 3 = 7 – x + 10
a: x = −4
b: x = −2
c: x = 2
d: x = 4
Answer:
Answer:
A.) 2(-4) + 4(-4) + 3 = 7 -(-4) + 10
-8 -16 + 3 = 21
-24 + 3 = 21
-21 = 21
Answer= -1.
B.) 2(-2) + 4(-2) + 3= 7 -(-2) + 10
-4 -8 + 3 = 19
-12 + 3 = 19
-9 = 19
-2.1.
C.) 2(2) + 4(2) + 3 = 7 -(2) + 10
4 + 8 + 3 = 7 -2 + 10
15 = 15
1.
D.) 2(4) + 4(4) + 3 = 7 -(4) + 10
8 +16 + 3 = 7 -4 + 10
27 = 13
0.481.
pleaseeeee helppppppppppllpllll!!
Answer:
Angle is right
Sides are scalene
X: 80% degrees
Since if its parallel it's 90% degrees
Step-by-step explanation:
what is it called when the vertex is the lowest value of the parabola
Answer:
a Minimum
Step-by-step explanation:
Let θ be an angle such that cot θ= 12/5 and secθ<0.
Find the exact values of cosθ and cscθ.
9514 1404 393
Answer:
cos(θ) = -12/13
csc(θ) = -13/5
Step-by-step explanation:
The relation between the cot and csc is ...
cot² + 1 = csc²
The signs of the cot and sec tell you this is a 3rd quadrant angle, where cos and csc are both negative.
Then ...
csc(θ) = -√(1 +(12/5)²) = -√(169/25)
csc(θ) = -13/5
__
cos(θ) = cot(θ)/csc(θ) = (12/5)/(-13/5)
cos(θ) = -12/13
derive Euler's formula e^(ix) - cos(x) + i*sin(x) by using taylor series expansion
Answer:
the answer is probably 5
Please don’t troll include work
Spain settled Texas because of threats from
a. France.
b. hostile Indians.
C. England .
d. the United States.
Answer:
The answer is A, France
Answer:
Spain settled taxes because of threats from France
what is the longest line segment that can be drawn in a right rectangular prism that is 14 cm long 11 cm wide and 7 cm tall
The longest segment is —
pleaseeee
Answer:
The longest segment is approximately 19.13cm
Step-by-step explanation:
Given
[tex]l = 14cm[/tex]
[tex]w = 11cm[/tex]
[tex]h = 7cm[/tex]
Required
The length of the longest segment (d)
This is calculated using:
[tex]d = \sqrt{l^2 +w^2 + h^2[/tex]
So, we have:
[tex]d = \sqrt{14^2 +11^2 +7^2[/tex]
Using a calculator, the equation becomes
[tex]d = \sqrt{366[/tex]
Take square roots
[tex]d = 19.13cm[/tex]
19
The two figures are proportional. Find the value of x.
36 in.
12 in.
<
10 in.
Х
A
12 in
B) 24 in
30 in
40 in
Answer:
C 30 in
Step-by-step explanation:
set a proportion: 36/12 = x/10 => x = 36 × 10 ÷ 12 = 30
A pair of shoes cost $57.00 and the sales tax is 7%?
What is amount of the sales tax? Be exact, it's money.
Answer:
3.88
Step-by-step explanation:
$57 multiplied by 7%
Help me in the next 10 minutes pls
Answer:
516 in.³
Step-by-step explanation:
14 · 6 · 4
336 in.³
10 · 6 · 3
180 in.³
336 in.³ + 180 in.³
516 in.³
In a 3-digit number, the hundreds digit is one more than the ones digit and the tens digit is twice the hundreds digit. If the sum of the digits is 11, find the number.
Answer:
362
Step-by-step explanation:
Let the ones digit equal x. If the ones digit is one, then the hundreds digit is one more than it or x + 1. And, since the tens digit is twice the hundreds digit, you can say it is 2(x + 1) or as simplified: 2x + 2. Now, we are given the sum of the digits is 11, so if we add all of them, they should be equal to 11:
x + x + 1 + 2x + 2 = 11
We can combine like terms:
4x + 3 = 11
4x = 8
x = 2
So, the ones digit is 2. Since the hundreds digit is one more, it's 3. And because the tens is twice the hundreds, it's 6. The number is 362.
Answer:
362
Step-by-step explanation:
the answer is 363 bcz 3*2=6.3-1 is 2 and 6+3+2 os 11.This satisfys all three condisions.Now the equations if x is the hundreths digit is :x+(2x)+(x-1)=11.
I hope this helps
What is the solution set to the equation 15-4x=x^2-6x?
Answer:
x = 5 and x = -3
Step-by-step explanation:
15 - 4x = x² - 6x
15 = x² - 2x
0 = x² - 2x - 15
Now if solved using quadratic formula the answer would be:
x = 5 and x = -3
Hope this helps!
Which is the graph of X < 2?
Answer:
I think it should be the first or the second one
they both look the same
so choose either
Answer:
The 4th one ( graph #4)
Step-by-step explanation:
Given f (x) = StartLayout Enlarged left-brace first row x squared minus one-third x, for x not-equals negative 1 second row negative 1, for x = negative 1 EndLayout. What is Limit of f (x) as x approaches negative 1?
Negative five-thirds
Negative four-thirds
Four-thirds
Five-thirds
Answer:
Four-thirds
Step-by-step explanation:
If you graph the first equation on desmos, then graph the equation x = -1, the intersection is at 1.333333, making the answer 4/3.
The Limit of f (x) as x approaches negative 1 is 4/3, the correct option is C.
What is a Function?A function is a law that relates a dependent and an independent variable.
f(x) = x² - (1/3)x x ≠ -1
= -1 x = -1
[tex]\lim_{x \to \ -1} f(x)[/tex] = (-1)² - (1/3)(-1)
f(x) = 1 + (1/3)
f(x) = 4/3
To know more about Function
https://brainly.com/question/12431044
#SPJ5
can someone do this for me thanks ok bye
Answer:
log2 10 = 3x
Step-by-step explanation:
Basic Logarithm Tenets
Answer:
log2 10=3x
Step-by-step explanation:
is the amswer
The area of a rectangle is 99 square meters. The length is 11 meters. Find the width.
Answer:
9 meters
Step-by-step explanation:
To find the area of a rectangle you do length times width. To find a side length, or the width divide the area by the length. 99/11=9.
The width is 9 meters.
The perimeter of this shape is 120 π mm
What is the radius of the smaller semicircles?
Answer:
15mm
Step-by-step explanation
It says the perimeter is 120 pi, if pi is separate from 120, that would make 120 our radius 60. with 4 semicircles, divide 60 by 4 and boom, 15.
I think that's right, I was never good at geometry
Help me !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Please help due in 10 min!!! Solve for X
Answer:
x == 9
Step-by-step explanation:
Angle at the vertex is half the difference of those at the intercepted arcs;
35 = 1/2(120-15x+5)
35 * 2 = 120-15x-5
70 = 115 - 5x
70 - 115 = -5x
-45 = -5x
x = 45/5
x = 9
Hence the value of x is 9
Please Help if you can!! I also have more questions in my profile!
Answer:
(4, 0), (-4, 0)
Step-by-step explanation:
Hope it helps you in your learning process.
Water flows from a showerhead at a rate of 24^-1 gallons per second. How many gallons do you use when taking a 15-mintue shower? a 20- minute shower?
Answer:15 min=37.5 gal., 20 min=50 gal.
Step-by-step explanation:
Hey! This question can be tricky at first look. So what we’re going to do first is find 24^-1. This would be .0416 rounded to the thousandths place. We are rounding because it is a repeating decimal and it goes on forever or for a while at least. Now we know that .0416 gallons flow each second.
Next, we will multiply by 60 to find how much flows each minutes. We do this because there are 60 seconds in a minute. We then get 2.5 gallons.
We then multiple by the number of minutes which in this case is 15 and 20.
2.5x15= 37.5 gallons
2.5x20=50 gallons
Sorry if I did anything wrong! If you have any questions, I’m sorry because I have messaging turned off! :(
Hope this helps!