Answers
Answer:
the answer is 252 degrees
Related Questions
If x=3 substitute the value of x into the expression and simplify 3x+6
Answers
Answer:
15
Step-by-step explanation:
Plug in 3 as x:
3x + 6
3(3) + 6
9 + 6
= 15
So, the simplified expression if x = 3 is 15
A random variable X has a mean of 120 and a standard deviation of 15 a random variable Y has a mean of 100 and a standard deviation of 9. if c and y are independent approximately what is the standard deviation of X plus Y
Answers
Answer:
The standard deviation is 17.5
Step-by-step explanation:
Let S be the sum of X and Y
S = X + Y
So we want to calculate the standard deviation of S
The standard deviation of S will be the square root of the sum of the variances of X and Y
Kindly recall that variance is the square of standard deviation
The variance of X will be 15^2 = 225
The variance of Y will be 9^2 = 81
So the standard deviation of the sum will be
√(81 + 225)
= √(306)
= 17.5
The standard deviation of X + Y is 17.5
The given parameters are:
[tex]\bar x =120[/tex] --- the mean of X
[tex]\sigma_x =15[/tex] -- the standard deviation of X
[tex]\bar y = 100[/tex] --- the mean of Y
[tex]\sigma_y = 9[/tex] --- the standard deviation of Y
The standard deviation of X + Y is then calculated as:
[tex]\sigma_{x +y} = \sqrt{\sigma_x^2 + \sigma_y^2}[/tex]
This gives
[tex]\sigma_{x +y} = \sqrt{15^2 + 9^2}[/tex]
Evaluate the exponents
[tex]\sigma_{x +y} = \sqrt{225 + 81}[/tex]
[tex]\sigma_{x +y} = \sqrt{306}[/tex]
Take the square root of 306
[tex]\sigma_{x +y} = 17.5[/tex]
Hence, the standard deviation of X + Y is 17.5
Read more about standard deviation at:
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PLEASE HELP I NEED THE ANSWER
*Graph is shown in photo*
Part A: What is the solution to the pair of equations represented by p(x) and f(x)?
Part B: Write any two solutions for f(x).
Part C: What is the solution to the equation p(x) = g(x)? Justify your answer.
Answers
Which statement describes the domain of the function
Answers
Answer:
D: All real numbers except x=-1 and x=1
Step-by-step explanation:
Step-by-step explanation:
The domain of the rational expression is when the denominator is defined. (non-zero)
When the denominator is 0,
4x² - 4 = 0.
=> x² - 1 = 0, (x + 1)(x - 1) = 0, x = -1 or x = 1.
Hence the answer is all real numbers except x = -1 and x = 1.
An equation is shown below:
4(x − 3) − 5(x + 1) = 3
Which statement shows a correct next step in solving the equation? (1 point)
A: The equation can become 4x − 12 − 5x − 5 = 3 by applying the associative property of multiplication.
B: The equation can become 4x − 3 − 5x + 1 = 3 by applying the associative property of multiplication.
C: The equation can become 4x − 3 − 5x + 1 = 3 by applying the distributive property.
D: The equation can become 4x − 12 − 5x − 5 = 3 by applying the distributive property.
Answers
your answer is a
and x equals 20
Somebody plz help me with this
Answers
Answer:
5) I=1848. total=3248
Step-by-step explanation:
interest = principal x rate x time /100
I=prt/100
p=1400
r=16.5%
t=8
i=1400*16.5*8/100
i=14*16.5*8
I=112*16.5
I=1848
Mohamed surveyed his class on their favorite candy bar. 8 picked Snickers. 6 picked Kit Kats. 6 picked Milky Ways. If he applied the results of his survey to the whole school of 1500 people, about how many students would choose Snickers?
Answers
Answer:
600 students
Step-by-step explanation:
there were 20 students surveyed because 6 + 6 + 8 = 20 there were 8/20 who picked snickers then you have to find the proportions 20 * 75 = 1500 you then multiply 8 * 75 which equals 600 so in the end out of 1500 students 600 will pick snickers
What is the value of this expression when g = 5 and h = 1? 3 index square root 2g-2h+g A. 13 B. 16 C. 9 D. 7
Answers
The ratio of the number of boys to the number of girls in a choir is 5 to 4. There are 60 girls in the choir. How many boys are in the choir? A 75 B 61 C 48 D 80
Answers
Answer:
75 boys
Step-by-step explanation:
60 / 4 = 15
5 × 15 = 75
What is the range for this set of data? 7, 15, 12
A. 3
B. 5
C. 8
D. 12
Answers
Answer:
8 is your answer
Step-by-step explanation:
Hope this helps sorry if I'm wrong
Answer:
8
Step-by-step explanation:
I'm doing the quiz rn.
VERY EASY 6TH GRADE MATH! BRAINLIEST PROMICED! ONLY 3 EASY QUESTIONS! PLS HELP :( I PUT ALL MY POINTS IN THIS! Rick deposits $3 into his bank account. The following week, he deposits 3 times that amount. Each week after that, he deposits 3 times the amount he did the previous week.
How much does he deposit in all during the first 3 weeks?
1. Write an exponential expression that represents Rick’s deposit in the second week. Explain how you identified the base and the exponent.
2. How much does Rick deposit in all in the first 3 weeks? Show your work.
3. Do you think Rick can keep up this savings plan for a year? To help you decide, use a calculator to find 315, the amount he would deposit in week 15.
Answers
Answer:
100 POINTS! (50 split up) PLSSSSSSSSSS HELP!!! I REALLY NEED IT SO MUCH :( I PROMICE TO GIVE BRAINLIEST AND FIVE STARS AND A THANKS! 6TH GRADE SCIENCE! i used all my points for this!
You measure the mass of an apple using a balance. You get these three measurements:
Trial 1: 167.0 g
Trial 2: 166.9 g
Trial 3: 167.2 g
You know that the true mass of the apple is 172 g. Describe your results in terms of precision and accuracy. Explain your answer in a paragraph for the best grade.
Step-by-step explanation:
4, 5, 6 is it a right triangle, acute, or obtuse
Answers
Answer:
it is an acute scalene triangle
Answer:
Since the lengths of the triangle are 4,5, and 6, which are almost equal, then the triangle cannot be obtuse. It's right triangle
a scale drawing of a room is shown below
Answers
Pleaseeeeeeees help meee
Answers
if -3 + i is a root of the polynominal function f(x), which of the following must also be a root of f(x)
Answers
25+29=9v solve for v
Answers
Answer: 486
Step-by-step explanation:
The graph of y
2x2 is shifted 8 units down on a coordinate grid.
What are the roots of the equation that correspond to the new graph?
A. X=-2 and x = 2
B. X=-2 and x = 4
C. X = -4 and x = 2
D. x = -4 and x = 4
u
Answers
Answer: the correct answer would be A!
Step-by-step explanation:
Taking this test as well ☺️
Write an equation in both point-slope and slope-intercept form for a line that passes through (-4,-2) and (-3,5)
Answers
Answer:
i do not no
Step-by-step explanation:
Question 13 pts
Data from Ivy Tech's advising center shows the wait times as a normal distribution with the average as 20 min and a standard deviation as 5 min.
Using the empirical rule, what percent of students wait between 15 and 25 minutes?
What percent wait more than 20 min?
Using the empirical rule, what is the chance that someone waits less than 5 min?
Answers
Answer:
1. 68%
2. 50%
3. 15/100
Step-by-step explanation:
Here, we want to use the empirical rule
1. % waiting between 15 and 25 minutes
From what we have in the question;
15 is 1 SD below the mean
25 is 1 SD above the mean
So practically, we want to calculate the percentage between;
1 SD below and above the mean
According to the empirical rule;
1 SD above the mean we have 34%
1 SD below, we have 34%
So between 1 SD below and above, we have
34 + 34 = 68%
2. Percentage above the mean
Mathematically, the percentage above the mean according to the empirical rule for the normal distribution is 50%
3. Probability that someone waits less than 5 minutes
Less than 5 minutes is 3 SD below the mean
That is 0.15% according to the empirical rule and the probability is 15/100
If a group of distinct objects can be arranged in 120 different ways, how many objects are there?
Answers
Answer:
Step-by-step explanation:
5!=5×4×3×2×1=120
so there are 5 distinct objects.
Answer:
The correct answer is option C. 5
Step-by-step explanation:
N=120
N=5
What is the answer to this question?
Answers
Answer:
27 cubic feet
Step-by-step explanation:
Answer:
27ft
Step-by-step explanation:
Multiply Height, Width, and Length
Tim has 3 blue shirts and 2 red shirts in a drawer. He randomly picks one shirt, puts it back, and then picks another shirt. What is the
probability that Tim picked up a blue shirt first and then a red shirt?
A. 5/25
B. 6/10
C. 5/10
D. 6/25
Answers
Answer:
D-6/25
Step-by-step explanation:
-4x+y=3 plzz answerrr simplify itt
Answers
Answer:
x= -3/4 + y/4
Step-by-step explanation:
Move all terms that don't contain
x to the right side and solve.
Answer:
[tex]x = - \frac{3}{4} + \frac{1}{4} y[/tex]
Step-by-step explanation:
[tex] - 4x + y = 3[/tex]
[tex] - 4x = 3 - y[/tex]
[tex]x = - \frac{3}{4} + \frac{1}{4} y[/tex]
[tex]x = - \frac{3}{4} + \frac{1}{4} y[/tex]
Elijah and 2 of his friends are each paid $20 per afternoon
for stuffing envelopes. If they work 5 afternoons, what
is the total amount of their earnings?
Answers
7x - 14=35 what value of x makes this equation true
Answers
Hello there, and welcome to Brainly!
In the following equation, you are solving for the variable, x. 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 operation, and stands for:
Parenthesis
Exponents (& Roots)
Multiplication
Division
Addition
Subtraction
First, add 14 to both sides of the equation:
7x - 14 (+14) = 35 (+14)
7x = 35 + 14
7x = 49
Next, divide 7 from both sides:
(7x)/7 = (49)/7
x = 49/7
x = 7
7 is the value for x that will make the equation true.
~
Look at the pic ! :) 6th grade math
Answers
Answer: 2 pounds in each bag
Step-by-step explanation:
12 = pounds of almonds
6 = number of bags
12 / 6 = 2
Answer:
The 12 means it's how many pounds of almonds she has and the 6 means how many bags she has.
Step-by-step explanation:
12 divided by 6 is 2. (Hope this helps!)
through: (1,1) , slope = -3
Answers
Answer:
y = -3x + 4
Step-by-step explanation:
slope = -3 or -3/1
y - intercept: (0,4)
slope intercept form equation: y = -3x + 4
Two women painted a barn. Barbara can paint it alone in 5 days, and Sara in 8 days. They
started to paint it together, but after 2 days, Sara got bored and Barbara finished alone. How
long did it take her to finish?
Answers
Answer: she will need 2.8 days to finish the work.
Step-by-step explanation:
Let's define:
D = number of days.
B = rate at which Barbara paints a barn
S = rate at which Sara paints a barn
We know that Barbara can paint a barn in 5 days, then:
B*5 days = 1 barn
B = 1/5 barns per day.
And we know that Sara can paint it in 8 days, then:
S*8 days = 1 barn
S = 1/8 barns per day.
Now, when they work together, their rates are added.
Then if they work together for two days, they paint a total of:
(1/5 barns per day + 1/8 barns per day)*2 days
(8/40 barns per day + 5/40 barns per day)*2 days
(13/40 barns per day)*days = 26/40 barns
Now Sara needs to paint he other 14/40 barns in her own, she will need D days, then:
(1/8 barns per day)*D = 14/40 barns
D = (14/40 barns)/(1/8 barns per day) = (14*8/40) = 2.8 days.
So she will need 2.8 days to finish the work.
How Many Solutions?
3x - 7 = 3(x - 3) + 2
No Solution
One Solution
Infinite Solution
Answers
Answer:
Infinite Solutions
Step-by-step explanation:
3x-7=3x(x-3)+2
3x-7=3x-9+2 - Distributive Property
3x-7=3x-7 - adding the right side together
There are 20 houses on Rainbow Street. 45% of the houses have holiday decorations in their yard. How many houses have decorations?
Answers
Answer:
9 houses
Step-by-step explanation:
45% of 20 is 9 so the answer is 9
Total 9 houses have decoration on Rainbow Street.
What is percentage?Percentage is a part of the whole number. It is denoted by % sign.
1 %= 1/100.
Given that,
Total number of houses on Rainbow Street = 20,
The percentage of the houses which have decorations = 45%
The number of houses which have decoration
= 20×(45/100)
= 9
There are 9 houses that have decorations.
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