Answer:
Ryan sprinted 46.33 yards.
Step-by-step explanation:
Ryan sprinted 139 feet.
1 feet = 0.33 Yard
Formula: Divide the length value by 3
Now,
139 ÷ 3 = 46.33
Thus, Ryan sprinted 46.33 yards.
-TheUnknownScientist
A pharmaceutical company claims that one of its drugs works on 90% of those who have a certain ailment. An experimenter, suspicious that the company is overexaggerating the drug's efficacy, decides to collect data to test the pharmaceutical company's claim to see if the true efficacy might be less. Of the 250 individuals surveyed, 215 individuals said the drug helped their ailment.
a. What is the null hypothesis?
b. What is the Z-value?
c. Based on an alpha of .10, should we reject or fail to reject the test?
d. What is the result of finding a z-statistic that is more extreme than the critical value?
Answer:
Below is the solution to the given points:
Step-by-step explanation:
Please find the complete question in the attached file.
For point a:
[tex]H_0 : p \geq 0.90[/tex]
For point b:
[tex]z=\frac{\frac{x}{n}-p}{\sqrt{\frac{p(1-p)}{n}}}=\frac{\frac{215}{250}-0.90}{\sqrt{\frac{0.9 \times 0.10 }{250}}}= -2.11\\\\[/tex]
For point c:
[tex]Z_{critical} =z_{\alpha}=-1.28[/tex]
since the test statistics [tex]< Z_{critical}\\\\[/tex]
Reject [tex]H_o[/tex]
For point d:
[tex]P(|z \leq -2.11|)=0.0174[/tex]
12) A survey found that 60% of the people by used cars. If a car dealership has 3,500 car buyers, predict how
many buyers purchased a used car.
Answer:
The correct answer is 2100.
(60% of 3,500 = 2,100)
Step-by-step explanation:
Robin had picked 7 bags of oranges. How many glasses of orange juice could she make if each glass took one-seventh of a bag?
Answer:
7 Glasses
Step-by-step explanation:
One glass of orange juice needs 1/7 of a bag, she brought 7 bags which all adds up to a full 7 glasses
Answer:
7
Step-by-step explanation:
if it takes 1/7 of a bag to make a glass and there are 7 oranges in a bag you can assume you can make 7 glasses
Maas has a bank account with less than $400 in it.his bank pays no interest on that account,and charges $2 per month for each month the account is below $500 how much will be in Maaz account if he makes no deposits or withdrawals,after two years?
Answer:
400 - 2 (24 months) = $352
Step-by-step explanation:
The balance in Maas account after two years will be $352.
Mass has a bank account with less than $ 400 in it. He pays charges of $ 2 per month if account has less balance than $500.
We have to find out that if he doesn't deposit or withdraws any amount , what will be balance of his account after 2 years ?
What will be the value if 2 times of 400 is added to 2 times of 400 ?
The value will be 1600.
We know that no. of months in 1 year = 12 months
No. of months in 2 years = 24 months
As , bank charges $2 per month if the balance is less than $500.
⇒ for 24 months the charges will be ;
= 24 × 2 = $48
The balance in Maas account after 2 years will be
$ 400 - $ 48 = $ 352.
Thus, the balance in Maas account after two years will be $352.
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ILL GIVE BRAINLEST, find the value of x and show work
Answer:
90°+90°+64°+x=360°{sum of angle of quadrilateral is 360°}
244°+x=360°
x=360°-244
x=116°
hope it helps.
What is the amount of snow that can be placed in this globe if it is 4.7 inches wide?
A.434.9 in^3
B.23.1 in^3
C.217.4 in3
D.54.3 in3
Answer:
The awnswer is D. 54.3in^3
Step-by-step explanation:
The amount of snow that can be placed on this globe will be 23.1 inch³.
What is the volume of the globe?
Globe is a spherical 3d element that has a radius let R then the volume of that sphere will be 4/3 π R³.
Given a globe wide 4.7 inches means it is the diameter of the globe.
The radius of the globe = dia/2.
Radius = 2.35 inch.
Volume of globe(amount of snow) = 4/3 π (2.35)³= 23.1 inch³
so the amount of snow needed will be 23.1 inch³.
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find the indefinite integral ∫((x^2)/(4x^3+9)) dx
Answer:
[tex] \displaystyle \frac{1}{12} \ln( |{4x}^{ 3} + 9|) + \rm C[/tex]
Step-by-step explanation:
we would like to integrate the following indefinite integral:
[tex] \displaystyle \int \frac{ {x}^{2} }{4 {x}^{3} + 9} dx[/tex]
in order to integrate it we can consider using u-substitution also known as the reverse chain rule and integration by substitution as well
we know that we can use u-substitution if the integral is in the following form
[tex] \displaystyle \int f(g(x))g'(x)dx[/tex]
since our Integral is very close to the form we can use it
let our u and du be 4x³+9 and 12x²dx so that we can transform the Integral
as we don't have 12x² we need a little bit rearrangement
multiply both Integral and integrand by 1/12 and 12:
[tex] \displaystyle \frac{1}{12} \int \frac{ 12{x}^{2} }{4 {x}^{3} + 9} dx[/tex]
apply substitution:
[tex] \displaystyle \frac{1}{12} \int \frac{ 1}{u} du[/tex]
recall Integration rule:
[tex] \displaystyle \frac{1}{12} \ln(|u|) [/tex]
back-substitute:
[tex] \displaystyle \frac{1}{12} \ln( |{4x}^{ 3} + 9|) [/tex]
finally we of course have to add constant of integration:
[tex] \displaystyle \frac{1}{12} \ln( |{4x}^{ 3} + 9|) + \rm C[/tex]
and we are done!
PLEASE HELP! 10 pts. i just need the letters in order :))
pythagorean theorem.
Answer:
Start A-E-I-J-F-K-G-C-H-Escape
Step-by-step explanation:
Start A-E-I-J-F-K-G-C-H-Escape
The Venn diagram shows the number of students that exercise in different ways. What number should go in the highlighted box below?
Answer:
50
Step-by-step explanation:
Add up all the numbers
if 2 × 3 equals 812 4 × 5 equals 1620 then what is 6 × 7
Answer:
2x3=812
4x5=1620
then
6x7=2428
description
2x400+3x4=812
4x400+5x4=1620
6x400+7x4=2428
the answer is 2428
A group of friends wants to go to the amusement park. They have no more than $310 to spend on parking and admission. Parking is $9, and tickets cost $35 per person, including tax. Write and solve an inequality which can be used to determine xx, the number of people who can go to the amusement park.
Answer:
9 + 35x = 310
Step-by-step explanation:
In the triangle, what is the degree measure of angle ABC ?
Answer:
135 - 25 = 110
Step-by-step explanation:
Answer:
m∠ABC = 110°
Step-by-step explanation:
There is an exterior angle given, at about point C. This can be utilized to find the interior angle, as they form a linear pair and ergo are supplementary. So,
180° - 135° = 45°
∠C = 45°
Now, you know that a triangle contains 180°. So, use ∠A + ∠B + ∠C = 180° to find the missing angle.
25° + ∠B + 45° = 180°
70° + ∠B = 180°
∠B = 110°
∠B in this case can also be written as ∠ABC.
Can someone help me pleaseeeee
Answer:
The Table Answer are
-2=-1
-1=3
0=7
1=11
2=15
Second Table is
-3=-5
-1=3
1=11
3=19
5=27
Step-by-step explanation:
I did the math
Please find missing side length!
Answer:
[tex]4\sqrt{3}[/tex]
Step-by-step explanation:
64 - 16 = 48
49 = 16 x 3
what is the volume if a hemisphare with a diameter of 10cm
Answer:
volume of hemisphere=2/3πr³
2/3×22/7×5³261.90cm³hope it helps.
Plz help me well mark brainliest if correct
Answer:
63
Step-by-step explanation:
smallest is 38
biggest is 63
ion
What is the total surface area of a pyramid with a square base with sides of 12 cm, where the faces
have a slant height of 15 cm?
15 cm
On this side.
A
= 0.3333333
12 cm
O A 144 cm?
OB 234 cm
OC 360 cm
OD 504 cm?
Answer: 504
Step-by-step explanation:
Area: 4 triangles + square
Triangle area = 1/2 x b x h
Square = side x side
4(1/2 x 12x 15) + 12x12
= 504
Marcus has two salary options for his new job.
A monthly salary of $1,800 plus a 3.5% commission of sales
A monthly salary of $2,000 plus a 2% commission of sales
If he expects $5,000 in sales each month, what is the difference of the two salary offers?
Answer:
$125
Step-by-step explanation:
Help please with math!
Answer:
7. D. Obtuse
8. D. 5
9. C. 117°
Step-by-step explanation:
Step 1: Define.
Acute angles - angles less than 90°Right angles - angles that equal 90°Straight angles - angles that equal 180°Obtuse angles - angles above 90° but less than 180°.-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Step 2: Solve.
7. The angle presented is an obtuse angle because it is more than 90°, but less than 180°.
-------------------------------------------------------------------------------------------------------------
Step 2 continued: Solve.
8. 140° and 8x° are supplementary angles; this means both angles have a sum of 180°.
[tex]140 + 8x = 180[/tex]
The first step to finding 'x' is to subtract 140 from 140 and 180.
[tex]140 - 140 = 0[/tex] (cancels itself out)
[tex]180 - 140 = 40.[/tex]
Now we are left with:
[tex]8x=40.\\[/tex]
The last step to solving this is dividing 40 by by the coefficient.
[tex]40/8=5[/tex]
[tex]x=5.[/tex]
------------------------------------------------------------------------------------------------------------
Step 2 continued: Solve.
9. As I mentioned before, supplementary angles are two angles that have a sum of 180°.
If angle 1 is 63, then angle 2 is..
[tex]180 - 63 = 117[/tex]
Angle 2 is 117°.
Here is an attachment to make number 8 easier to understand.
Find the missing value in the ratio table. Then write the equivalent ratio
Answer:
The missing value in shirts is 28, and the missing value in jackets is 14.
Step-by-step explanation:
HELP ME PLEASE IM LOST
Answer:
D) $0.15/hr
Step-by-step explanation:
Divide 1.5 by 10 and you get 0.15, check your work by dividing 3 by 20=0.15, you divide the numbers in which are a line, for example look at the cost 3 and hours used 20, (if that makes sense)
Help me plsssssssssssssssssssssssssss
number 7 is as follows Answer: C18.9
Step-by-step explanation:
The perimeter is the length of the outline of a shape. To find the perimeter of a rectangle or square you have to add the lengths of all the four sides. so (5.65x2)+(3.8x2)=18.9 cm
Answer:
2 is F. 768 because all you have to do is mulltiply base times height oh and 7 is C
Step-by-step explanation:
What is the value of 1 / 5 (6 + 8.5)?
Can someone help me please
Answer:
x=9 since 2x9=18 and 18-8=10
100 POINTS PLEASE HELP. answer all questions please. check the image.
Answer:
Step-by-step explanation:
Problem 1
g(-23) = 3
g(0) = 5
2 = g(10)
1 = g(34)
Problem 2
No, because g(x) = f(-x). For g(x) to inverse of f(x), g(f(x)) = x
Problem 3
tan(50) = 1.19
Height of statue = 250*1.19 - 150
= 147.9 ft
Problem 4
cosθ = 9/12
θ = 41.41 deg.
Answer:
Step-by-step explanation:
g(x) is inverse of f(x)
so g(f(x))=x
g(-23)=3
g(0)=5
g(10)=2
g((34)=1
no, it is an inverse
4 inverse fn, g(r(x))=x
but here g(x)=r(-x)
so g(r(x))=r(-r(x)) n NOT =x
pedestal + statue = 250*tan(50degree) = 297.94
statue ht = 297.94-150 = 147.94 ft
cos(theta) = 9/12
theta = 41.41 deg.
answer this if you want 70 pts who ever answers first I will brainliest and give 5 stars with a thank you and you will earn 70 pts you may go NOW
Find the product for each of the following.
Answer:
1 10/17
Step-by-step explanation:
make 45 a fraction by putting a denominator of 1
3/85 * 45/1
3*45 = 135
85*1 = 85
Simplify 135/85 = 1 10/17
Law of sines due tonight
Answer:
Step-by-step explanation:
sin(110°) / AC = sin(40°) / 12
now use algebra skillz to solve for AC
12*sin(110°) / sin(40°) = AC
17.5 =AC
Distance between points A(5,3) and B(7,-4)
Answer:
The distance between the two points is [tex]\sqrt 53[/tex]
Step-by-step explanation:
First you find the distance between the x values which is 2 units and then you find the distance between the two y values which is 7 units. Then you use the pythagorean theorem to find the distance between the two points. Since the distance between the x values is 2 and the distance between the y values is 7 then you do 2²+7² and you get the square root of 53 since the pythagorean theorem equation is a²+b²=c².
Part A
The graph of which quadratic function has roots of 7 and 3 and passes through (2, 10)?
Multiple choice question.
A)
f(x)=x2+10x+21
B)
f(x)=x2 – 10x+21
C)
f(x)=2x2 – 20x+42
D)
f(x)=2x2+20x – 42
Part B
Select the correct choices to complete the sentence.
The graph of the function has a , 1 of 1.
minimum
maximum
Answer:
C
Step-by-step explanation:
because The graph of which quadratic function has roots of 7 and 3 and passes through (2, 10), so therefore its C
The equation f(x) = 2x² -20x +42 and the function has minimum at x=5 which is f(5) = -8 option (C) is correct.
What is a quadratic equation?Any equation of the form [tex]\rm ax^2+bx+c=0[/tex] Where x is variable and a, b, and c are any real numbers where a ≠ 0 is called a quadratic equation.
Part A)
The quadratic function has roots of 7 and 3
f(x) = (x - 7)(x - 3)
f(x) = x² -3x -7x +21
f(x) = x² -10x +21
Multiply by:
f(x) = 2x² -20x +42
Plug (2, 10)
10 = 8 - 40 +42 = 10
Part B) From the graph, the function has minimum at x = 5
f(5) = -8
Thus, the equation f(x) = 2x² -20x +42 and the function has minimum at x=5 which is f(5) = -8
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