Answer:
0.010
Step-by-step explanation:
there is one 79 in the dice, and since there are 103 numbers in total, you use
1/103
= 0.00970873786
round to thousandths
= 0.010
The American Psychological Associated conducted a survey in 2003 of psychologists to estimate the average incomes for psychologists based on their academic degree and years of experience. 36 psychologists responded who had a just received their masters degree in 2003. The average was $48,800 with a standard deviation of $16,800.
This question is incomplete, the complete question;
The American Psychological Associated conducted a survey in 2003 of psychologists to estimate the average incomes for psychologists based on their academic degree and years of experience. 36 psychologists responded who had a just received their masters degree in 2003. The average was $48,800 with a standard deviation of $16,800.
The 95% Confidence Interval is ($, $ )
Answer:
at 95%, confidence interval is ( $43312, $54288 )
Step-by-step explanation:
Given the data in the question;
sample size n = 36
mean x' = 48,800
standard deviation σ = 16,800
at 95% confidence level;
∝ = 1 - 95% = 1 - 0.95 = 0.05
∝/2 = 0.05 / 2 = 0.025
z critical value, [tex]Z_{\alpha/2[/tex] = 1.96
now, confidence interval for population mean is given by the formula
x' ± [tex]Z_{\alpha/2[/tex]( σ/√n )
so we substitute
⇒ 48800 ± 1.96( 16800/√36 )
⇒ 48800 ± 1.96( 2800 )
⇒ 48800 ± 5488
⇒ 48800 - 5488, 48800 + 5488
⇒ ( 43312, 54288 )
Therefore, at 95%, confidence interval is ( $43312, $54288 )
help please ! solve for u and simplify the answer
Answer:
u = 5
Step-by-step explanation:
[tex]\frac{u + 7}{15} = \frac{4}{5}[/tex]
We want to solve for u. This means we need to isolate u on one side of the equation.
To do this, first multiply both sides by 15. This will cancel out the denominator on the left side.
[tex]u + 7 = (\frac{4}{5})(\frac{15}{1})[/tex]
Multiply the numerators and denominators separately.
4 • 15 = 60
5 • 1 = 5
[tex]u + 7 = \frac{60}{5}[/tex]
Simplify the fraction.
60 ÷ 5 = 12
u + 7 = 12
Subtract 7 from both sides.
u = 5
Check your work by plugging u = 5 back into the original equation.
[tex]\frac{5 + 7}{15} = \frac{4}{5}[/tex]
[tex]\frac{12}{15} = \frac{4}{5}[/tex]
[tex]0.8 = 0.8[/tex]
Your answer is correct.
Hope this helps!
Answer:
5 is your answer for u.
Step-by-step explanation:
Note the equal sign, what you do to one side of the equation, you do to the other.
First, multiply 15 and 5 to both sides of the equation (to get rid of the denominators):
[tex]15 * 5 * (\frac{u + 7}{15}) = (\frac{4}{5}) * 5 * 15\\5 * (u + 7) = 4 * 15[/tex]
First, distribute the 5 to all terms within the parenthesis. Also, simplify the right side by multiplying:
[tex]5 * (u + 7) = 4 * 15\\(5 * u) + (5 * 7) = (4 * 15)\\5u + 35 = 60[/tex]
Next, isolate the variable, u. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.
PEMDAS is the order of operations, and stands for:
Parenthesis
Exponents (& Roots)
Multiplication
Division
Addition
Subtraction
~
First, subtract 35 from both sides, and then divide by 5 to isolate the variable, u:
[tex]5u + 35 = 60\\5u + 35 (-35) = 60 (-35)\\5u = 60 - 35\\5u = 25\\\\\\\frac{5u}{5} = \frac{25}{5} \\u = \frac{25}{5} = 5\\u = 5[/tex]
Has any one done this or have an idea what its even asking?
Answer: Its asking for the combination for the shapes like WXYX (example) ( I think) just search it up because I cant help much
Step-by-step explanation: j
Dan made 8 out of 10 free throws. What is the experimental probability that he will not make his next free throw? What is the theoretical probability of not making a free throw?
Answer:
8/10--> 2/10 20 % scnahce of not makin git
Step-by-step explanation:
please help me out, god bless you. dont answer with a link or just steal points plz, I really need help
Answer:
x = 12 radical 2 ithink these is ansewer
Can someone help me? I’ll reward points + brainalist (btw only need help with number 5)
Answer:
A. 55°
hope it can help you
PLEASE I HAVE BEEN TRYING ALL NIGHT AND ITS PAST DUE I CANNOT FIGURE THIS OUT!!!
Answer:
Scale Factor:1/3
A(-6,0)->A'(-2,0)
B(-3,-3)->B'(-1,-1)
C(-9,-6)->C'(-3,-2)
This scale factor is reduced
Scale Factor:2
A(-6,0)->A'(-12,0)
B(-3,-3)->B'(-6,-6)
C(-9,-6)->C'(-18,-12)
This scale factor is enlarged
Susan traveled 57.9 miles each day for the past 7 days. How many miles did she travel in all?
Answer:
Simply take the number of miles each day and multiply it by the number of days. 57.9 miles × 7 days = 405.3 miles
Answer: 405.3 miles
What is the measure of
162
A. 324°
B. 162°
O C. 81°
D. 72°
Answer:
81
Step-by-step explanation:
trust me its correct
Answer:
C. 81
Step-by-step explanation:
Just took the test the person is correct
Solve the following system of equations.
-3x+5y=-7
-7x-9y=25
Answer:
(x,y)=(-1.-2)
Step-by-step explanation:
Using the elimination method:
-27x+45y=-63
-35x-45y=125
---------------------
-62x=62-->x=-1
-3*(-1)+5*6=-7-->y=-2
How many solutions will the equation have?
| x – 2| = 6
Answer:
2
Step-by-step explanation:
Answer:
2 solutions I believe. 2 different x values.
Help plzz will mark brainleast
Answer:
rectangular prism
Step-by-step explanation:
maybeeee
sorry if it wrong :l
What do kitty cats like to eat for breakfast
Answer:
Mice crispys
Step-by-step explanation:
what kind of angle does an acute triangle have
Answer:
An acute angle is an angle that measures less than 90 degrees. A triangle formed by all angles measuring less than 90˚ is also known as an acute triangle. For example, in an equilateral triangle, all three angles measure 60˚, making it an acute triangle.
hope this answer helps you.....
HELP NOW QUICKKK PLZZZZ ITS TIMED WILL GIVE BRAINLYIST
Answer:
480. Since each one is 120 and there are 4 of them then its 120*4
Step-by-step explanation:
In a random sample of 8 residents of the state of Montana, the mean waste recycled per person per day was 3.0 pounds with a standard deviation of 0.23 pounds. Determine the 99% confidence interval for the mean waste recycled per person per day for the population of Montana. Assume the population is approximately normal. Step 1 of 2: Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.
Answer:
at 99%, Confidence interval is ( 2.716, 3.285 )
( 2.716 < μ < 3.285 )
Step-by-step explanation:
Given the data in the question;
sample size n = 8
mean x' = 3.0
standard deviation σ = 0.23
To calculate the confidence interval, we use the following expression;
x' ± [tex]t_{\alpha /2, df[/tex]( σ/√n) ------- let this be equation
now, at 99% confidence interval;
∝ = 1 - 99% = 1 - 0.99 = 0.01
degree of freedom df = n - 1 = 8 - 1 = 7
hence t-critical value = 3.499
in equation 1, we substitute in our values;
⇒ 3.0 ± 3.499( 0.23/√8 )
⇒ 3.0 ± 0.2845
⇒ 3.0 - 0.2845, 3.0 + 0.2845
⇒ ( 2.7155, 3.2845 )
Therefore at 99%, Confidence interval is ( 2.716, 3.285 )
( 2.716 < μ < 3.285 )
FInd the unknown value of:
18 = 3 + x
x = ?
the answer to the equation is x=15
A culture of bacteria has an initial population of 54000 bacteria and doubles every 7 hours. Using the formula P_t = P_0\cdot 2^{\frac{t}{d}}P t =P 0 ⋅2 d t , where P_tP t is the population after t hours, P_0P 0 is the initial population, t is the time in hours and d is the doubling time, what is the population of bacteria in the culture after 8 hours, to the nearest whole number?
Answer:
P
t
=119241.6675≈119242
Step-by-step explanation:
Find the GCF of the terms of the polynomial
Answer:
7z³
Step-by-step explanation:
7z³
[tex]\huge\boxed{Hi\:there!}[/tex]
To find the GCF of the polynomial, all we have to do is spot the common factor of all the terms of the polynomial.
21z⁵-42x⁴+14z³
The common term is
7z³
If we factor 7z³ out, we'll get
z³(3z²-6z+2)
[tex]\huge\boxed{\sf{Hope\:this\:helps!}}\\[/tex]
[tex]\huge\bold{Good\:luck!}[/tex]
[tex]\huge\mathfrak{LoveLastsAllEternity}[/tex]
Help please !!! I don’t know what to do
9514 1404 393
Answer:
6. x = 3
8. x = -7.5
Step-by-step explanation:
Put the number in place of the expression it is equal to, then solve for x.
__
6) g(x) = -x +5
2 = -x +5 . . . . . . . . . g(x) is replaced by 2, because g(x) = 2
x +2 = 5 . . . . . . . . . . add x to both sides
x = 3 . . . . . . . . . . . . . subtract 2 from both sides
__
8) n(x) = -2x -21
-6 = -2x -21 . . . . . n(x) is replaced by its equal: -6
3 = x +10.5 . . . . . . divide both sides by -2
-7.5 = x . . . . . . . . . subtract 10.5 from both sides
_____
Additional comment
We have shown a couple of ways these equations can be solved. You can separate the x-term and the constant terms before you divide by the x-coefficient, or you can do it after. In the first equation, we could have solved it ...
2 -x +5
-3 = -x . . . . subtract 5
3 = x . . . . . . multiply by -1
The way we did it avoids negative numbers.
The grocery store is located at (-6,5), the school is located at (8,5), and the library is located at (-6,-8). How much farther is the school from the grocery store than the library is from the grocery store?
Answer:
by 1 unit
Step-by-step explanation:
School to the grocery store is 14units
Library to grocery store is 13 units
14-13=1
Megan's text messaging plan costs $5 for the first 700 messages and 30¢ for each additional text message. If she owes $63.20 for text messaging in the month of January, how many text messages did she send that month?
Answer:
Fixed cost $14 -350 messages
variable $ 0.25 each message i think
Step-by-step explanation:
Which choice is equivalent to the fraction below?
7/12
A. divided 12
B. 7•12
C. 7-12
D. 12 divided 7
Answer:
b
Step-by-step explanation:
:)
what is the equation of the line?
Answer:
it is D ithought sinse for x=0 y=0 and for x=4 y=-2 (-1/2 x4 =-2 )and others didnot give correct nbs
solve the system algebraically (using elimation or substitution method)
4x + 5y = 2
x + 2y = -1
Answer:
Equation form: x=3, y=-2
Point Form: (3,-2)
Step-by-step explanation:
Plz help plz help pl help
[tex] \large{\underline{\textsf{\textbf{\purple{ Given : }}}}} [/tex]
• Length = 9 [tex] \sf \dfrac{1}{2} [/tex] yd = [tex] \sf \dfrac{19}{2} [/tex] yd
• Breadth = 6 yd
• Height = 4 [tex] \sf \dfrac{2}{3} [/tex] yd = [tex] \sf \dfrac{14}{3} [/tex] yd
[tex] \large{\underline{\textsf{\textbf{\purple{ To \: calculate : }}}}} [/tex]
• Volume
[tex] \large{\underline{\textsf{\textbf{\purple{ Calculation : }}}}} [/tex]
As we know that,
[tex]\bigstar \: \boxed{\sf {Volume_{(Cuboid)} = \ell \times b \times h}} \\ [/tex]
So,
→ Volume = [tex] \sf \dfrac{19}{2} [/tex] yd × 6 yd × [tex] \sf \dfrac{14}{3} [/tex] yd
→ Volume = ( [tex] \sf \dfrac{19}{2} [/tex] × 2 × 14 ) [tex] \sf yd^3 [/tex]
→ Volume = 19 × 14 [tex] \sf yd^3 [/tex]
→ Volume = 266 [tex] \sf yd^3 [/tex]So, option (i) is correct.
Anyone know What 4/3 divided by 16 is
Answer:
1/12
Step-by-step explanation:
That's the same as
4/3 * 1/16
3 x 16 = 48
4/48
simplify
1/12
Answer:
4/3 divided by 16 is 0.0833333333333
Step-by-step explanation:
The second angle of a triangle is twice as large as the first. The measure of
the third angle is 20 degrees greater than the first. How large are the angles?
Please help me with this and fast!
Answer:
16
5
O
I think
Step-by-step explanation:
PLS HELP!!!!
7x=28
x/9=3
5x=125
14=x÷2
8x=40
Answer:
7x=28
x = 4
x/9=3
x = 27
5x=125
x = 25
14=x÷2
x = 28
8x=40
x = 5