Answer: ⇒V=π×32×53=45×π3≈47.124 cubic cm
Hope this helps!!
Scores on a certain intelligence test for children between ages 13 and 15 years are approximately normally distributed with μ=101 and σ=24. (a) what proportion of children aged 13 to 15 years old have scores on this test above 83 ? (note: please enter your answer in decimal form. for example, 45.23% should be entered as 0.4523.)
Answer:
a) 0.7734
Step-by-step explanation:
Problems of normal distributions can be solved using 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.
In this question, we have that:
[tex]\mu = 101, \sigma = 24[/tex]
(a) what proportion of children aged 13 to 15 years old have scores on this test above 83 ?
This is 1 subtracted by the pvalue of Z when X = 83. So
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{83 - 101}{24}[/tex]
[tex]Z = -0.75[/tex]
[tex]Z = -0.75[/tex] has a pvalue of 0.2266
1 - 0.2266 = 0.7734
The answer is 0.7734
PLS HELP Does the following table of values represent an exponential function?
What is the solution of the system of equations shown on the graph?
176
12
O (5, -1)
o (-4,-3)
O (3,-4)
o (-4,3)
Answer: 3, -4
Step-by-step explanation: gust look harder
Pls help I’ll brainlest ASAP
2(2x+2) ????????????????????????
Answer:
4x+4
Step-by-step explanation:
2(2x+2)
Distribute the first 2 to each term inside the parentheses
2 * 2x + 2 *2
4x+4
Answer:4x+4
Step-by-step explanation:
Multiply the numbers in the parentheses by 2
2 times 2x=2x+2x=4x
2 times 2=4
So....4x+4 is the answer
ASAP BE||CD. Find the value of x and AC.
I don’t understand
Which equation correctly demonstrates the distributive property?
A.- 2(3a + 1) = - 6a + 1
B.- 2(3a + 1) = - 6a - 2
C.- 2(3a + 1) = 6a + 1
D.- 2(3a + 1) = 6a + 2
Answer:
B)
Step-by-step explanation:
I hope this helps :)
A negative correlation has a/an?
Answer:
A negative correlation means that there is an inverse relationship between two variables - when one variable decreases, the other increases. The vice versa is a negative correlation too, in which one variable increases and the other decreases.
Step-by-step explanation:
An account earns annual simple interest. Find the balance of the account.
$5,000 at 6% for 9 months.
Answer:
$7700
Step-by-step explanation:
As the account earns 6% interest, if we find 6% of $5000 we get $300, the interest is simple and given every month, meaning you get $2700 in interest as $300 x 9 months = $2700
$5000 initial + $2700 interest = $7700
EDIT:
It could be that the interest is 6% yearly, which means that yearly you get 6% interest, and the answer is $5225.
6% interest is $300 per year
$300÷12= $25 per month
$25 x 9 months = $225
$5000 initial plus $225 interest = $5225 total
1. The L.C.M. of x and 12 is 36.
Answer:
36
Step-by-step explanation:
of
5
What is
Domain
Answer:
Because the domain refers to the set of possible input values, the domain of a graph consists of all the input values shown on the x-axis.
Step-by-step explanation:
(hope this helps :P)
Answer:
The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined. y=−5 is a straight line perpendicular to the y-axis at point (0,−5), which means that the range is a set of one value {−5}.
James and Bethany Morrison are celebrating their 10th anniversary by having a reception at a local reception hall. They have budgeted $2500 for their reception. If the reception hall charges a $80 clean up fee plus $35 per person, find the greatest number of people that they may invite and still stay within their budget.
Solve this problem 3/4 - (-2/5)=
Answer:
23/20
Step-by-step explanation:
To subtract the fraction, find LCD and combine.
Answer:
1.15 is the answer ababbasba they making me type so much but the answer is 1.15
20 characterssssssss
One number is five less than three times another number. If the sum of the numbers is 3, find the numbers.
Answer:
1 and 2
Step-by-step explanation:
1 is 5 less than 3 times 2
3*2= 6
6-5= 1
1+2=3
Determine the AMPLITUDE and the MIDLINE of the sine function below.*
1 poin
y = – 3sin(2x) - 5
a. Amplitude = -3, Midline = -5
b. Amplitude = 3, Midline 5
c. Amplitude = 3, Midline - 5
d. Amplitude = 2, Midline = – 3
O a.
Step-by-step explanation:
Amplitude of the sine function is 1.
So if its multiplied by -3, its amplitude is 3 (its always positive).
The midline of sin x is 0.
The midline of sin 2x is also 0.
The midline of -3*sin 2x is also 0.
So if you subtract this function by 5, then the new midline is -5.
what is the difference between multiplying fractions and adding/subtracting fractions? complete sentances pleaseo
Answer:
See explaination for answer! Hope this helps!
Step-by-step explanation:
When multiplying and deviding, you are raising them or lowering them by a certain degree, but adding or subtractions is just combining two fractions.
Just to quickly explain the "combining" aspect, during subraction, you are combining a positive with a negative.
Write an expression for the measurement of angle L using the measurement of angle C found in part C
Answer:
180’ - 130’
Step-by-step explanation:
Answer:
Angle C measures 130°. Find the measure of angle L by subtracting the measurement of angle C from 180°. The numerical expression for the measure of angle L is 180° – 130°.
Step-by-step explanation:
Help
Don’t use for points or I’ll take it back
Answer:
x=34°
Step-by-step explanation:
90°-56°=34°
The bill at a restaurant is $160. You leave a 20% tip. What is your total restaurant bill, including the tip? 20 points!
Answer:
$192
Step-by-step explanation:
Bill: $160.00
Tip: 20%
To figure out 10%, you need to move the decimal point over to the left one place: $16.00
10%: $16.00
16 times 2= $32.00
160.00+32.00= $192.00
#6 pls I’ll give brainliest to whoever replies first
Answer:
y=3x
Step-by-step explanation:
Answer:
c
Step-by-step explanation:
0 goes from 0 to three 3 so the constant rare is the and the linear equation would be y = 3x
Find the area of the composite figure.
Answer:
48
Step-by-step explanation:
4x2=8
4x3=12
12/2=6
PLEASE HELP ASAP!!
How many lines of symmetry are there in the object pictured above
A. 3
B. 1
C. 0
D. 2
The interval(s) for which the function shown below is increasing
Answer:
everywhere except between 2 and 5
(between -inf and 2 and between 5 and inf)
Step-by-step explanation:
pls brainlist
A function assigns the value of each element of one set to the other specific element of another set. The interval for which the given function is increasing is (-2,0).
What is a Function?
A function assigns the value of each element of one set to the other specific element of another set.
A function from a set X to a set Y allocates precisely one element of Y to each element of X. The set X is known as the function's domain, while the set Y is known as the function's codomain.
The given function is increasing only when the slope of the function is positive and when the value of x is increased from -2 to 0. Therefore, it can be concluded that the interval for which the given function is increasing is (-2,0).
Learn more about Function here:
https://brainly.com/question/5245372
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Find 9079 + 1232 + 9786.
Find the sum of the first 22 terms of the arithmetic sequence, the first term is - 2 and the common difference is -5.
Answer:
The sum of the first 22 terms of the sequence is -1199.
Step-by-step explanation:
Arithmetic sequence:
The general term of a arithmetic sequence is given by:
[tex]A_n = a_1 + (n-1)r[/tex]
In which [tex]a_1[/tex] is the first term and r is the common difference.
The sum of the first n terms of a arithmetic sequence is given by:
[tex]S_n = \frac{n(a_1+a_n)}{2}[/tex]
First term is - 2 and the common difference is -5.
This means that [tex]a_1 = -2, a_n = -5[/tex]
Sum of the first 22 terms
[tex]S_{22} = \frac{22(-2+a_{22})}{2} = 11(-2+a_{22})[/tex]
In which
[tex]a_{22} = -2 + (22-1)(-5) = -107[/tex]
So
[tex]S_{22} = 11(-2 - 107) = 11(-109) = -1199[/tex]
The sum of the first 22 terms of the sequence is -1199.
5 ways to get points
Answer:
um answer questions and answer questions and answer questions and answer questions and answer questions
Step-by-step explanation:
Selena earned $4,283.30 last month. She used of her earnings to pay her bills. With the remaining money, she
bought two shirts for $19.99 each and a pair of sunglasses for $12.99. How much money does Selena have left from last
month's earnings?
Answer:
$4,256.31
Step-by-step explanation:
4,283.30 - 2(19.99) + 12.99 = x
Initial value (last month's earnings) - the two shirts, which were both 19.99 and the pair of sunglasses, which were 12.99.
4256.31 = x
pls SOLVE <3l!!
Determine when the cost of the two services will be the same amount, and what the price will be.
The Strauss family is deciding between two lawn-care services. Green Lawn charges a $42 startup fee plus
$28 per month. Yard Guard charges a $24 startup fee plus $34 per month.
After
months, a customer would have paid either company $
Answer:
the answer is 159 dollars in total
Step-by-step explanation:
good luck guys
The area of a bathroom floor measures 6 feet by 9 feet and each custom tile that makes up the flooring is 1 1/2 square feet. How many tiles are needed to cover the floor?
pls help me
Answer:
Around 9.8 tiles
Step-by-step explanation:
The formula is x = (6*9)/5.5.