Answers
Answer:
Step-by-step explanation:
IMPORTANT: ∛8ˣ is not the square root of 8³. ∛ means cube root.
∛x = x^(⅓)
Related Questions
Can some one help me with these 2 questions I’ll give you brainliest
Answers
9514 1404 393
Answer:
2 + 5i
Step-by-step explanation:
Multiply numerator and denominator by the conjugate of the denominator.
[tex]\dfrac{(25+19i)}{(5-3i)}=\dfrac{(25+19i)(5+3i)}{(5-3i)(5+3i)}\\\\=\dfrac{68+170i}{34}=\boxed{2+5i}[/tex]
__
In general, the multiplication proceeds the way it would if i were a variable. The difference is that i² can be replaced by -1.
1. There are five questions on a multiple-choice test. Each question has four possible
answers. Savanna did not study for the test, randomly picks the answers, and submits
the exam. Find the probability that:
Savanna answers the first question correctly.
b. Savanna answers the first, second, third, fourth, and fifth questions correctly.
Answers
Answer:
a. 1/4
b. 1/4 ^ 5 = 1/1024
Sal is participating in a charity walk. The distance Sal walks, in kilometers, is proportional to the number of hours he spends walking.
Which statements are true about the distance Sal walks?
Select each correct answer.
Answers
the attachment is not clear dude...
Answer:
the attachment is not clearly
If you overestimate the standard deviation of the population, which type of error are you potentially increasing
Answers
Answer:
Standard Error
Step-by-step explanation:
The standard deviation is directly proportional to the sample standard deviation or standard error.
According to the relation :
Standard Error = standard deviation / sqrt(sample size)
Going by these relation an increase in the value of standard deviation will favor or increase the standard error withba constant Number of samples.
Therefore, overestimating the standard deviation will. Cause an increase in the standard error, while underestimating the standard deviation will also lower the standard error.
In a certain chemical, the ratio of zinc to copper is 4 to 11. A jar of the chemical contains 418 grams of
copper. How many grams of zinc does it contain?
It contains
grams of zinc.
Answers
Answer:
Step-by-step explanation:
Zinc:copper = 4:11
Amount of zinc = 4x
Amount of copper = 11x
11x = 418
x = 38 grams
Amount of zinc = 4x = 152 grams
I NEED help Zane is determining whether the given value of the variable is a solution of the equation.
13 + h = 21 for h = 9
What steps should Zane take? Check all that apply.
Substitute 9 for the variable h.
Substitute 21 for the variable h.
Simplify by adding 13 and 21.
Simplify by adding 13 and 9.
21 = 21, so 9 is a solution to the equation.
Answers
Answer:
a, d, f
Step-by-step explanation:
Answer:
A d and f
Step-by-step explanation:
I just did it
A study suggested that childrenbetween the ages of 6 and 11 in the US have anaverage weightof 74 lbs. with a standard deviation of 2.7 lbs.If we assumethe weights are normally distributed, what proportion of childrenin this age range between 70 lbs. and 85 lbs.
Answers
Answer:
The proportion of children in this age range between 70 lbs and 85 lbs is of 0.9306.
Step-by-step explanation:
When the distribution is normal, we use the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
A study suggested that children between the ages of 6 and 11 in the US have an average weightof 74 lbs, with a standard deviation of 2.7 lbs.
This means that [tex]\mu = 74, \sigma = 2.7[/tex]
What proportion of childrenin this age range between 70 lbs and 85 lbs.
This is the pvalue of Z when X = 85 subtracted by the pvalue of Z when X = 70. So
X = 85
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{85 - 74}{2.7}[/tex]
[tex]Z = 4.07[/tex]
[tex]Z = 4.07[/tex] has a pvalue of 1
X = 70
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{70 - 74}{2.7}[/tex]
[tex]Z = -1.48[/tex]
[tex]Z = -1.48[/tex] has a pvalue of 0.0694
1 - 0.0694 = 0.9306
The proportion of children in this age range between 70 lbs and 85 lbs is of 0.9306.
Help me please .
I need to show full work to the teacher ?
How to solve it
Answers
The question is in the attachment
Answers
Answer:
120
10 12
2 5 2 6
2 3
150
10 15
2 5 3 5
Step-by-step explanation:
120= 2x2x2x3x5
150= 2x3x5x5
Multiply all the common prime factors.
2x3x5
HCF= 30
$20 haircut; 10% tip Find the total cost
A. $2.00
B. $18.00
C. $22.00 0
D. $40.00
Answers
Answer:
answer is c
Step-by-step explanation:
10 cents per every dollar. 10*20 is 200 pennies or 2$
So
20+2 is 22 hope this helps
Sixty percent of a plane's passengers are women and ten percent of those women are in first class. What is the number of women in first class if the plane is carrying 200 passengers?
Answers
Answer:
6
Step-by-step explanation:
60 women. 10 percent would be 6 cause 6 x 10 = 60
answer
12
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Given the Isosceles Trapezoid, find the measure of the missing? angle.
Answers
Answer:
s＝65
Step-by-step explanation:
T to S is 180
180－115=65
Evaluate the expression when x=4, y=-6, and z= -3.
3x – 2y
----------------
Z
Answers
Answer:
3x-2y=3(4)-2(-6)
12+12=24
Now, we divide the result of 3x-2y by z
Therefore, we have 24 divide - 3
-8
Therefore, the answer is - 8
From midnight to 6:00 am, the temperature rose 1.55c each hour. If the temperature at 6:00 am was 4.3c, what was the temperature at midnight?
Answers
The question is in the jpg.
Answers
It is 40.8 units^3
6. Los divisores de 28 son:
a. D28 = { 1, 2, 3, 7, 9, 28}
b. D28 = {1,2,5, 8, 14,28}
c. D28 = {1, 2, 4, 7, 14, 28}
Answers
Answer:
C
Step-by-step explanation:
28/1 = 28.
28/2 = 14.
28/4 = 7.
28/7 = 4.
28/14 = 2.
28/28 = 1.
etc.
Find x. (More info in the picture)
Answers
Answer:
The answer is 3.
Step-by-step explanation:
Donnie has $20 to spend at the amusement park. The
amusement park charges a $10 admission fee. The
amusement park also has special exhibits that cost $4.00
each to view. Which equation can be used to determine the
amount of money, y, that Donnie has left if he views x
exhibits?
Answers
Answer:
C. Y=10-4x
Step-by-step explanation:
1. In the Fibonacci sequence {0, 1, 1, 2, 3, 5, 8, ...}, what is the value of Fs?
F5 = 5
F5 = 3
F5 = 8
O F5 = 13
NEED THIS ASAP
NEED A EXAM DONE WILL PAY
Answers
Answer:
f5= 5
Step-by-step explanation:
The value of F₅ in the given Fibonacci sequence is 5, i.e. option A is the correct answer.
What is the Fibonacci sequence?Fibonacci sequence is a sequence in which each number is the sum of the two preceding ones.
i.e.
[tex]F_n = F_{n-1} + F_{n-2}[/tex]
We have,
Fibonacci sequence {0, 1, 1, 2, 3, 5, 8, ...}
i.e.
F₁ = 0, F₁ = 1, F₂ = 1, F₃ = 2, F₄ = 3, F₅ = 5, F₆ = 8
Now,
We have to find the value of F₅,
Here, for n = 5,
i.e.
[tex]F_5 = F_{5-1} + F_{5-2}[/tex]
i.e.
F₅ = F₄ + F₃
So,
F₅ = 3 + 2
So,
We get,
F₅ = 5
So, the value of F₅ for the given sequence is F₅.
Hence, we can say that the value of F₅ in the given Fibonacci sequence is 5, i.e. option A is the correct answer.
To know more about Fibonacci sequence click here
https://brainly.com/question/128628
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What is an equation of the line that passes through the points (4, -8) and (-4, 2)?
Put your answer in fully reduced form.
Answers
People drive, on average, 14,063 miles per year. About how many miles each week is that?
Answers
Answer:
About 270.44 miles
Step-by-step explanation:
There is about 52 weeks in a year. 14,063 divided by 52 is 270.44\
DONT TRUST ME ON THIS
Answer:
270 miles a week
Step-by-step explanation:
there are 52 weeks in a year
so you divide 15,063 by 52
that would equal 270
What is the greatest common factor of 3 and 27?
Answers
Answer:
9
Step-by-step explanation:
3*9=27
The greatest common factor of 3 and 27 is 3.
Given numbers are 3 and 27.
To find the greatest common factor of 3 and 27, find the factor each number individually.
So, the factor of 3 are:
3 = 1, 3
and, the factor of 27 are:
27= 1, 3, 9, 27
Now, the greatest common factor will be 3.
Learn more about greatest common factor here:
https://brainly.com/question/29584814
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How many degrees is angle x?
Answers
Answer:
Step-by-step explanation:
acute angle
Answer:
40 degrees
Step-by-step explanation:
The way I did this (and it won't make much sense I know but its just my way of doing it), is to subtract the bigger angle on the tool by the smaller angle. For example, like in the image, one arrow is at 120 degrees and another at 80 degrees, so I would just do 120-80 which equals 40, and because we talk about angles in the hood its 40 degrees, not plain 40
hope you understand
What is the solution to the system of equations below?
x = 5y - 2 AND 3x - 4y = 27 *
Answers
Answer:
x = 13, y = 3
Step-by-step explanation:
3(5y - 2) - 4y = 27
15y - 6 - 4y = 27
11y = 33
y = 3
x = 15 - 2
x = 13
Working alone, it takes Stephanie seven hours to clean an attic. Shayna can clean it in 12 hours. How long would it take them to clean the attic working together?
Answers
Will give you brainliest PLS HELP ASAPPP
Answers
Answer: UT=18
Step-by-step explanation:
Answer:18
Step-by-step explanation:
It’s divided by 3.5 so divide 63/3.5
Pls help me this is 7th grade (ADVANCED)
Answers
Answer:
Step-by-step explanation:
Any line will add up to 180 degrees. If you subtract the 165 degrees from 180 (total), you will get the x value.
180 - 165 = 15 degrees
Draw a model to show 100 ounces of soda divided equally among 12 people. How many
ounces will each person have?
Answers
Answer:1,200
Step-by-step explanation:
Answer:
1,200
Step-by-step explanation:
After a discount of 30%, the sale price of a ride
pass at a fun park is $35. What was the original
price?
Answers
Answer:
Step-by-step explanation:
Its simple really, its 45.5
Since its a mark down and you want to find the original number, you have to multiply 35 by 1.3
35 x 1.3 = 45.5
Which then gives you 45.5
a car is traveling at a speed of 83 mph. what is the cars speed in miles per minute? how many miles will the car travel in 2 minutes?