Como pasar una potencia de negativa a positiva ?
Answer:
Cuando tenemos un exponente negativo hay que INVERTIR LA BASE para pasar a exponente positivo. Fíjate que el poner el inverso de la base no significa cambiar el signo de la misma. Al final el signo del resultado dependerá de si el exponente es par o impar. Con las fracciones ocurre lo mismo.
what is 10 times smaller than 0.6
Answer:
0.06
Step-by-step explanation:
(20 points) A random sample of =1200 n = 1200 registered voters and found that 620 would vote for the Republican candidate in a state senate race. Let p represent the proportion of registered voters who would vote for the Republican candidate. Consider testing 0:=.50 H 0 : p = .50 :>.50 H a : p > .50 (a) The test statistic is z =
Answer:
The test statistic is Z = 1.157
Step-by-step explanation:
Given that:
The sample size n = 1200
The sample proportion of those that will vote for the Republican candidate is represented by [tex]\hat p = \dfrac{x}{n}[/tex]
[tex]\hat p = \dfrac{620}{1200}[/tex]
[tex]\hat p =0.5167[/tex]
The null and the alternative hypothesis can be computed as:
[tex]H_o: P=0.50 \\ \\ H_a :P>0.50[/tex]
The formula for the one-sample Z-test for the population proportion can be expressed as:
[tex]Z = \dfrac{\hat p - P_o}{\sqrt{\dfrac{P_o(1-P_o)}{n}}}[/tex]
[tex]Z = \dfrac{0.5167 - 0.5}{\sqrt{\dfrac{0.5(1-0.5)}{1200}}}[/tex]
[tex]Z = \dfrac{0.0167}{\sqrt{\dfrac{0.5(0.5)}{1200}}}[/tex]
[tex]Z = \dfrac{0.0167}{\sqrt{\dfrac{0.25}{1200}}}[/tex]
[tex]Z = \dfrac{0.0167}{\sqrt{2.08333333\times10^{-4}}}[/tex]
Z = 1.157
Testing the hypothesis, from the information given, it is found that the test statistic is z = 1.157.
The null hypothesis is:
[tex]H_0: p = 0.5[/tex]
The alternative hypothesis is:
[tex]H_1: p > 0.5[/tex]
The test statistic is given by:
[tex]z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}[/tex]
In which:
[tex]\overline{p}[/tex] is the sample proportion. p is the proportion tested at the null hypothesis. n is the sample size.For this problem, the parameters are: [tex]p = 0.5, n = 1200, \overline{p} = \frac{620}{1200} = 0.5167[/tex]
Hence, the value of the test statistic is:
[tex]z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}[/tex]
[tex]z = \frac{0.5167 - 0.5}{\sqrt{\frac{0.5(0.5)}{1200}}}[/tex]
[tex]z = 1.157[/tex]
The test statistic is z = 1.157.
A similar problem is given at https://brainly.com/question/24166849
y=x+2 y=-3X
solve system of equations algebraically
Answer:
(x,y) = -1/2 , 3/2
Step-by-step explanation:
Let y = x +2 ----- (1)
y = -3x ------ (2)
Put equal both sides x +2 = -3x
x = -3x -2
x +3x = -2
4x = -2
x = -1/2 Put it in 2nd equation
Y = -3 (-1/2)
y = 3/2
so (x,y) = -1/2 , 3/2
Hope you got it.
Please Mark as Brainliest.
DOK Nitter Email You might need: Calculator Find the area of a circle with a radius of 8. Either enter an exact answer in terms of or use 3.14 for and enter your answer as units2
Answer:
about 201.06
Step-by-step explanation:
A house cast a 10 foot shadow. A 5 foot boy castsa 4 foot shadow.
5 feet
10 feet
4 feet
feet
How tall is the house?
What is 6825x25 please help
Answer:
170625
Step-by-step explanation:
170,625.................
Which measurements could not represent the side lengths of a right triangle?
A 6 cm, 8 cm, 10 cm
B 12 cm, 35 cm, 37 cm
C 4 cm, 6 cm, 10 cm
D 10 cm, 24 cm, 26 cm
6,8,10
Answer:
C
Step-by-step explanation:
It says COULD NOT so you just compare them. 10+4=14 so thats one side
6+10=16 so another side BUT 6+4=10 so that automatically cancels out the last side because it is equal to 10. It has to be above 10. So C is te correct answer.
prove that the sides with measures 10cm 8cm and 6 cm are the sides of right angled triangle??
Answer:
3 4 5 rule applies ie 10÷2 8÷2and 6÷2
Helppp!!!
37.37 x 7.6
Answer:
284.012
Step-by-step explanation:
Hope this awnsers your question!
Answer:
284.012
Step-by-step explanation:
what's the c ??
easy question solve it and get points...
hints : a is 116 and b is 64
Answer:
64 degrees
Step-by-step explanation:
It is the same amount of degrees as the original one.
2. 3 2/5 ÷ 4/5
HELP PLS I NEED THE ANSWER
4.25 is DECIMAL FORM
17/4 is exact form
4 1/4 is mixed form
HOPE THIS HELPS :)
I need help ASAP ???
y-3x=-2 and 7x- 2y=8
Answer:
thx for the free
Step-by-step explanation:
Kate wants to spend less than $100 per day to rent a car. A car rents for $45 per day plus $0.25 per mile. Write, solve, and graph an inequality for the amount of miles she is able to drive while staying within her budget.
solve for z −cz+6z=tz+83
Answer: z=83/c - 7 + t
Step-by-step explanation:
HALP MEEEE
Function y=x+4 is _ than the function in the table
A. Greater than
B. Less than
C. Equal to
The sum of four and the product of three and a number x
Answer:
4+3x
Step-by-step explanation:
4+3x
What is the slope of the line that passes through the points (-2,8) and (-22,8)
Answer: m = 0
Step-by-step explanation:
Answer:
m=0
Step-by-step explanation:
The slope formula is: m=y1=y2/x2=x1
where (x₁, y₁) and (x₂,y₂) are the points on the line.
The points given are (-2,8) and (-22,8). Therefore,
x1=-2
y1=8
x2=-22
y2=8
Substitute the values into the formula.
m=8-8/-22-2
Solve the numerator. Subtract 8 from 8.
m=0/-22+2
Zero divided by any number is zero, so we automatically know the slope is zero.
m=0
The slope of the line is 0
There are 1,620 minutes of music to be put on 9 CD's. If the same number of minutes fits on each CD, how many minutes of music fit on each CD?
Answer:
180 minutes
Step-by-step explanation:
take 1,620 divide it by 9 and there is your answer
hope this helped
Answe: 180 minutes
Step-by-step explanation
you divide 1,620 divide it by 9 and there is your answer
Two percents are shown below:
1. 25% of 60
2. 10% of 150
Are these amounts equivalent? Explain why or why not.
Im really dumb i need help and can you also explain it
Mrs. Smith uses an automatic bill pay service to pay their monthly electric bill. So far this
year they have paid $843.36 over 8 months. How much has Mrs. Smith paid per month?
PLEASE HELP I don’t k is the answer
Answer:
B
Step-by-step explanation:
You have 96 grams of a radioactive kind of vanadium. How much will be left after 32 days if it’s half life is 16 days?
Answer:
24
Step-by-step explanation:
and finding the equation pls!
Answer:
Step-by-step explanation:
y = x + 5
(0,5)
(1, 6)
(3,8)
(5, 10)
Please help me smart people!!!!! It would be realllllyyyyy helpful right now!!!!!!
(Geometry) pls answer the problems in the photo!
what is slope intercept
Answer:
Slope Intercept is the equation of a straight line in the form y = mx + b where m is the slope of the line and b is its y-intercept.
Step-by-step explanation:
Emily bought 2 burgers and 4 drinks for $20. Deja bought 2 burgers and 2 drinks for $14. What was the cost of each burger and each drink? HURRY IN TEST RN
Plz help I’m not good with math!!
Answer:
point slope, slope intercept form, and I think two point
