Answer:
[tex]t=-2.86[/tex]
Step-by-step explanation:
From the question we are told that:
Sample 1 [tex]n_1=8[/tex]
Sample 1 mean blood pressure [tex]\=x_1=89mmHg[/tex]
Sample 1 variance [tex]\sigma_1=81[/tex]
Sample 2 [tex]n_2=8[/tex]
Sample 2 mean blood pressure [tex]\=x_2=105mmHg[/tex]
Sample 2 variance [tex]\sigma_2=169[/tex]
Generally the equation for the test of statistic is mathematically given by
[tex]t=\frac{\=x_1-\=x_2}{\sqrt{\frac{\sigma_2}{n_1}+\frac{\sigma_2}{n_2} } }[/tex]
[tex]t=\frac{89-105}{\sqrt{\frac{81}{8}+\frac{169}{8} } }[/tex]
[tex]t=-2.86[/tex]
therefore the samples test for comparing the two population means
[tex]t=-2.86[/tex]
A ball is thrown from an initial height of 7 feet with an initial upward velocity of 37 ft/s. The ball's height h (in feet) after t seconds is given by the following.
h=7+37t-16t²
Find all values of t for which the ball's height is 27 feet.
round your answer(s) to the nearest hundredth.
Answer:
t = 0.86 or t = 1.45
Step-by-step explanation:
Subtract 11x - 4y from the sum of 15x + 15y and - 18x + 15y.
Answer:
-14x + 34y
Step-by-step explanation:
First, find the sum of the two expressions by adding like terms:
(15x + 15y) + (-18x + 15y)
= -3x + 30y
Now, subtract 11x - 4y, again by combining like terms:
(-3x + 30y) - (11x - 4y)
= -14x + 34y
So, the answer is -14x + 34y
How many diagonals does a 12-sided convex polygon have? What is the general
rule for a convex polygon with n sides?
Answer:
goodluck!
Step-by-step explanation:
well is 12 sided and has digonal so
Answer:
54
Step-by-step explanation:
No of diagonals in a n sided polygon
[tex]= \frac{n(n-3)}{2} [/tex]
Therefore,
No of diagonals in a 12 sided polygon
[tex]= \frac{12(12-3)}{2} [/tex]
[tex]= 6\times 9[/tex]
[tex]= 54[/tex]
PLEASE HELP!!!
Triangle ABC has vertices at A(-5,2), B(1,3), and C(-3,0). Determine the coordinates of the vertices for the image of the pre image is translated 4 units right.
A. A’(-9,2),B’(-3,3), C’(-7,0)
B. A’(-4,6),B’(0,7),C’(1,0)
C. A’(-1,2),B’(5,3),C’(1,0)
D. A’ (-5,-2), B’(-1,-1), C’(-3,-4)
The coordinates of the vertices for the image of the pre image is translated 4 units right are: ’(-1, 2), B’(5, 3), and C’(1, 0).
What is translation on a coordinate plane?Translation on the coordinate plane is sliding a point or figure in any direction without any changes in size or shape.
During translation, the coordinates of the vertices of a figure or point change, and they slide left or right, up, or down without changing size or shape.
Given the question above, we need to find the coordinates of the vertices for the image of the pre image that are translated 4 units right.
So,
[tex]\rightarrow\sf \boxed{\boxed{-5+4=1=\bold{(-1,2)}}}[/tex]
[tex]\rightarrow\sf \boxed{\boxed{1+4=5=\bold{(5,3)}}}[/tex]
[tex]\rightarrow\sf \boxed{\boxed{-3+4=1=\bold{(1,0)}}}[/tex]
Thus, the coordinates of the vertices for the image of the pre image is translated 4 units right are: ’(-1, 2), B’(5, 3), and C’(1, 0).
Learn more about translation on a coordinate plane at:
https://brainly.com/question/28109834
LOOK AT THE PHOTO AND ANSWER PLEASE
Answer:
Parallel, I think ||
Step-by-step explanation:
■■■■■■■
Yes they are parallel! Because they are on either sides of a rectangle this automatically makes them parallel.
PLEASE QUICK AND NO DOWNLOADS I BEG YOU NO DOWNLOADS
Answer:
b. x=20
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
The question is asking which number is bigger than 19 and less than 25.
The only one that fits the criteria is B. 20.
As a reference, look at which way the "alligator mouth" is facing. That number is supposed to be bigger.
If x>y, then x is bigger because the alligator mouth is facing the x.
The answer to this question
does anyone know the answer and how to show your work
Answer: (A)-2, -1
(b) 3,0
(C) 7,2
Step-by-step explanation:
So you just go and write the place and which ever one isnt there then theres you answer. I THINK
Which value of x would make TV IOS?
R
03
08
x
x + 4
10
X + 10
11
T
X-3
V
//
х
Answer:
11
Step-by-step explanation:
the value of x is 11 to make tv IOS
The measure value of y is 10.
Option C is correct.
What is Basic Proportionality Theorem?When a line parallel to one side of a triangle intersects the other two sides in distinct points, the other two sides are divided in the same ratio.
The fundamental proportionality theorem can be used to calculate the lengths of two sides of a triangle divided by a line drawn parallel to the third side. It can also be used to determine the relationship between two equiangular triangles.
We have
RT= x+ 4
TQ= x- 3
RV= x+ 10
As, TV || QS
By using Basic Proportionality Theorem
RT / TQ = RV / VS
(x+ 4) / (x- 3) = (x+ 10)/ x
x² + 4x = x² -3x + 10x - 30
4x - 7x = -30
-3x = -30
x= 10
Thus, the required value is 10.
Learn more about Basic Proportionality Theorem here:
https://brainly.com/question/28987422
#SPJ7
Compare the number of years it will take to double money at 5% interest, with simple interest and compounded annually. What is the difference in the number of years? (Round your answer to the nearest tenth, if necessary)
Answer:
unforntuley i dont know how to solve
Step-by-step explanation:
Simple interest means that you pay 1000000 bucks to the bank so the final answer is
gET LOst
The area of a square can be found using the equation A = s², where A is the area and s is the measure of one side of the square.
Match the equation for how to solve for the side length of a square to its description.
Drag the equation into the box to match the description.
--------------------------------------------------------------------------------------------------------
[ A square has an area of 99 in² ][ - ]
--------------------------------------------------------------------------------------------------------
A.) s=/99in
B.) s=(99)^2in
C.) s=99in
Answer:
s= √99 in.
Step-by-step explanation:
A computer is worth $400 when it is new. After each year, it is worth hall what it was the previous year What will its worth be after 4 years? Round you answer to the nearest dollar NOT cents
A. 500$
B. 125$
C. 250$
D. 1000$
Hello i need help please
Answer:
radius = 5 cm
height = 10 cm
Volume = 261.8 cm³
Step-by-step explanation:
Radius (r) = 5 cm
Height (h) = 10 cm
Volume of the cone (V) = ⅓πr²h
Plug in the values
V = ⅓*π*5²*10
V = ⅓*π*25*10
V = 261.8 cm³ (nearest tenth)
Mari used a thermometer to record temperatures of -3.4 Celsius and 1.6 Celsius . Which temperature in degrees is lower
$500 at 4% for 3 years
:FIND THE INTEREST EARNED
Answer:60$
Step-by-step explanation:
Each of the 8 cats in a pet store was weighed. Here are their weights (in pounds):
6, 16, 15, 10, 9, 9, 7, 11
Find the mean and median weight of these cats.
If necessary, round your answers to to the nearest tenth
Answer:
mean: 10.4
median: 9.5
Step-by-step explanation:
Find the missing lengths and values of square RSTU
SR
RU
Jim and Dianna want to save for their child's college expenses. They find an annuity that pays 6% annual interest,
compounded monthly. If they invest in this annuity by contributing $300 per month for 10 years, how much money will they
have for the college expenses?
Round your answer to the nearest hundred dollars.
Do NOT round until you have calculated the final answer.
Answer:
49200
Step-by-step explanation:
What is the slope of the line that passes through the
points (5, 0) and (5, -3)?
h(x) = 3x + 5
g(x) = 4x – 2
Find h(x) – g(x)
Answer:
6
Step-by-step explanation:
seshhhhh is that dababy. he valid
1. 0.5
2. 14
3. 8
4. 10
Answer:
The awnser is 14
Step-by-step explanation:
If you multiply length x width then divide u get 14
Please help!!
Imaginary Numbers
Answer:
A. 1
Step-by-step explanation:
its A
In August an online store sold 213 graphing calculators during their back to school sale. Since then, sales have increased at a rate of 5% each month. Which function can be used to determine the monthly calculator sales sine August?
Answer:
[tex]y = 213 + 0.05x[/tex]
Step-by-step explanation:
Given
[tex]Initial = 213[/tex]
[tex]Rate = 5\%[/tex]
The equation to o this is:
[tex]y = intial +rate * weeks[/tex]
[tex]y = 213 + 0.05x[/tex]
Write an expression for "m decreased by 2.”
Answer:
m-2
Step-by-step explanation:
m is being subrtacted by 2
-
James ran mile on Monday. On
Tuesday, he ran 3 times as far. Which
equation can be used to determine x,
how far James ran on Tuesday?
Answer:
c
Step-by-step explanation:
gggehheueuru jshgsgsgsgsgsggsgs
An artist uses 18 colors on an art palette to paint a picture. This is 72% of all the colors on the palette. How many colors are on the artist’s palette?
Answer:
25
Step-by-step explanation:
Which graph and equation shows a proportional relationship between r and y? y= 11.5% y = 1.5x - 1.5
Answer:
y = 1.5x - 1.5
Step-by-step explanation:
Model and Solve Equations with Geometry Concepts (7.11c) . ... Now substitute the values for x and y into the expression. 2(1. 3. )(1. 2. −3) ... 10.0+1.5 = 11.5.
Magic Video Games, Inc., sells an expensive video games
package. Because the package is so expensive, the company wants to advertise an impressive guarantee
for the life expectancy of its computer control system.
The guarantee policy will refund the full purchase price if the computer fails during the guarantee period.
The research department has done tests that show that the mean life for the computer is 35 months, with standard deviation of 5 months. The computer
life is normally distributed. How long can the guarantee period be if management does not want to refund the purchase price on more than 6.596 of the
Magic Video packages?
Answer:
Magic Video Games, Inc., sells an expensive video games
package. Because the package is so expensive, the company wants to advertise an impressive guarantee
for the life expectancy of its computer control system.
The guarantee policy will refund the full purchase price if the computer fails during the guarantee period.
The research department has done tests that show that the mean life for the computer is 35 months, with standard deviation of 5 months. The computer
life is normally distributed. How long can the guarantee period be if management does not want to refund the purchase price on more than 6.596 of the
Magic Video packages?
Step-by-step explanation:
What is the square root of 63 expanded?
Answer:
the square root of 32 times square root of 7 equals the square root of 32 times square root of 7 equals 3 times square root of 7
Step-by-step explanation:
im a mathaholic :0
Centerville Middle School spends $13 for every workbook it buys. At most how many
workbooks can Centerville Middle School buy if it has $26 to spend?
Answer:
2
Step-by-step explanation:
13*2=26