The value of a is 72.74.
What is Probability ?Probability is the study of likeliness of an event to happen.
It is given that
The mean [tex]\rm \mu[/tex] of the distribution is 70
Standard deviation [tex]\rm \sigma[/tex] is 2
p( x<a) = 0.9147
a = ?
From Z table
For p ( p < 0.9147) , z = 1.37
[tex]\rm Z = \dfrac { X - \mu}{ \sigma}[/tex]
[tex]\rm \rm 1.37 = \dfrac { a - 70}{ 2}[/tex]
a = 70+ 2*1.37
a = 72.74
Therefore the value of a is 72.74.
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What is the formula for capacity of a prism?
Answer:
The prism volume formula is B*h B (area of one end) =0.5*1000*566 = 283,000 mm 2 (area of a triangle) H (length/height of prism) = 1000 mm
Step-by-step explanation:
Answer:
Step-by-step explanation:
Any prism volume is equal to the area of the base (B) multiplied by the height of prism (H)
V = BH
Now, to find the area of the base you need this formula : B = 1/2 h(b1+b2), then multiply by the height of the prism.
What is the solution to the equation startfraction 3 over m 3 endfraction minus startfraction m over 3 minus m endfraction = startfraction m squared 9 over m squared minus 9 endfraction?
The provided equation has no solution because the square of any number cannon is negative.
What is an expression?It is defined as the combination of constants and variables with mathematical operators.
The question is incomplete.
The complete question is:
Find a solution to the given equation
Please refer to the attached picture for the expression.
We have an expression:
[tex]\rm \dfrac{3}{\left(m+3\right)}-\dfrac{3}{\left(m-3\right)}=\dfrac{m^2+9}{\left(m^2-9\right)}[/tex]
3(m - 3) - 3(m + 3) = m² + 9
3m - 9 - 3m - 9 = m² + 9
m² ≠ -27
As the square of any number cannot is negative, so no solution to the provided equation.
Thus, the provided equation has no solution because the square of any number cannon is negative.
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Answer:
D = No Solution
Step-by-step explanation:
In AABC, what is the value of x?
Answer:
x = 6.5
Step-by-step explanation:
* since it's a triangle ALL the angles inside should give you 180° * Equate everything to 180°
8x + 10x - 10°+ 10x + 8° = 180°( sum of angles on a triangle)
28x - 2° = 180° * group like terms*
28x = 182°
x = 6.5
Evaluate.
{3−[−4−(6+2)]}⋅(−5)
A−75
B−57
C−15
D−9
Step-by-step explanation:
please mark me as brainlest
4. Minnie bought 6 postcards during 3 days of vacation. After 8 days of vacation, how many total postcards will Minnie have bought?
A. 4
B. 5
C. 16
D. 12
A survey found that 50% of teenagers prefer to watch a movie at a theater over other viewing options. You want to know the estimated probability that three out of four randomly chosen teenagers do not prefer watching a movie at a theater. How could you design a simulation for this situation?
Answer:
7m tall convert this into imperial measurement
Using the quadratic formula to solve x2 + 20 = 2x, what are the values of x?
Answer:
[tex]x=1[/tex] ± [tex]i\sqrt{19}[/tex]
Step-by-step explanation:
First off let's state the quadratic formula
Quadratic formula
[tex]\frac{-b+\sqrt{b^2-4ac} }{2a}[/tex]
[tex]\frac{-b-\sqrt{b^2-4ac} }{2a}[/tex]
For this question our quadratic equation is
[tex]x^2+20=2x[/tex]
Now before we can apply the quadratic formula we first have to set the equation equal to zero. We do this my moving everything to one side and setting it equal to zero.
In this case, we simply move the 2x to the other side making it negative and setting the equation equal to zero.
[tex]x^2-2x+20=0[/tex]
From here we plug in the values to the quadratic equation.
Now incase you don't know
[tex]a =[/tex] Coefficient of [tex]x^2[/tex] value
[tex]b=[/tex] Coefficient of [tex]x[/tex] value
[tex]c=[/tex] The Constant
Now plug in values
[tex]a=1[/tex]
[tex]b=-2[/tex]
[tex]c=20[/tex]
To get the values of x using the quadratic formula we have the plug in the values, we also have to both subtract and add the [tex]\sqrt{b^2-4ac}[/tex] to [tex]-b[/tex]
Plug in values into formula
[tex]\frac{2+\sqrt{(-2)^2-4(1)(20)} }{2(1)}[/tex]
[tex]\frac{2+\sqrt{-76} }{2}[/tex]
[tex]\frac{2+\sqrt{-1} *\sqrt{76} }{2}[/tex]
[tex]\frac{2+i *\sqrt{76} }{2}[/tex]
[tex]\frac{2+i *\sqrt{4(19)} }{2}[/tex]
[tex]\frac{2+i *\sqrt{2^2(19)} }{2}[/tex]
[tex]\frac{2+2i \sqrt{19} }{2}[/tex]
[tex]x=1+i\sqrt{19}[/tex]
Now repeat the steps except subtract from -b rather than add to it.
Final Answer
[tex]x=1[/tex] ± [tex]i\sqrt{19}[/tex]
BTW
± = plus and minus
What is true about △ABC? Select three options
AB ⊥ AC
The triangle is a right triangle.
The triangle is an isosceles triangle.
The triangle is an equilateral triangle.
BC ∥ AC
Answer: Isosceles triangle
Step-by-step explanation: Two of the base sides are equal distance away. (Sides AB and AC)
What statement is true for f(x) = 3.2^x?
Answer:
Step-by-step explanation:
Select the correct answer.
Consider the given functions.
A table with values of x and f of x is given along with a non-linear equation g of x equals 2 power x minus 5 and a graph solving the equation
Select the true statement regarding the end behavior of the functions.
Using limits, it is found that the true statement regarding the end behavior of the function is given by:
B. As the value of x increases, f is the only function to approach 0.
How to find the end behavior of a function?The end behavior of a function is given by the limit of the function as x goes to infinity.
In this problem, we have that:
[tex]\lim_{x \rightarrow \infty} f(x) = 0[/tex], as we can see from the table, when x increases, y decreases. [tex]\lim_{x \rightarrow \infty} g(x) = 2^{\infty} = \infty[/tex].[tex]\lim_{x \rightarrow \infty} h(x) = \infty[/tex], from the graph.Hence statement B is correct.
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What is equivalent to 3(5-2i)?
Answer:
Step-by-step explanation:
One equivalent can be obtain by distributing multiplication with 3 over subtraction 5-2i
3(5-2i) =
3·5 -3·2·i =
15 -6i or -6i +15
An object is attached to a spring that is stretched and released. The equation d= -8COS(pi/6 t) models the distance, d, of the object in inches above or below the rest position as a function of time, t, in seconds. Approximately when will the object be 6 inches above the rest position? Round to the nearest hundredth, if necessary.
0 seconds
1.38 seconds
4.62 seconds
8 seconds
The time when the object will be 6 inches above the rest position is C. 4.62 seconds.
How to depict the information?From the information, the object is attached to a spring and is stretched and released.
The given model is given as:
d = -8 cos (π/6t)
In this case, it's important to plot the graph based on the model given. Therefore, the time when the object will be 6 inches above the rest position is 4.62 seconds.
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A survey of 1,000 men and women asked, "Do you earn over $50,000 per year?" The table below shows the responses for males and females:
Male Female Total
Income over $50,000 475 375 850
Income below $50,000 75 75 150
Total 550 450 1,000
Based on these data, are "being female" and "earning over $50,000" independent events?
Yes, P(being female | the person earns over $50,000) = P(being female)
Yes, P(being female | the person earns over $50,000) ≠ P(being female)
No, P(being female | the person earns over $50,000) = P(being female)
No, P(being female | the person earns over $50,000) ≠ P(being female)
Based on the data, it is found that "being female" and "earning over $50,000" are not independent events. the correct answer is option D.
What is probability?Probability is defined as the ratio of the number of favorable outcomes to the total number of outcomes in other words the probability is the number that shows the happening of the event.
Two events, A and B are independent, if:
P(A [tex]\cap[/tex] B) = P(A) P(B)
In this problem, the events are:
Event A: Being female.Event B: Earning over $50,000.Out of the 1000 people, 450 are female, hence:
P(A) = [tex]\dfrac{450}{1000}[/tex] = 0.45
850 earn over $50,000, hence:
P(B) = [tex]\dfrac{850}{1000}[/tex] = 0.85
375 are women who earn over $50,000, hence:
P(A [tex]\cap[/tex] B) = [tex]\dfrac{375}{1000}[/tex] = 0.375
The multiplication of the probabilities is:
P(A [tex]\cap[/tex] B) = 0.45(0.85} = 0.3825
Therefore based on the data, it is found that "being female" and "earning over $50,000" are not independent events. the correct answer is option D.
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Help with math work
Answers for different section are given below;
What is Function?The functions are the special types of relations. A function in math is visualized as a rule, which gives a unique output for every input x.
Here, given function;
f(x) = -x² - 4x + 6
1. If we take -1 common from the given function, we get
f(x) = -1 (x² + 4x - 6)
f(x) = -1 (x² + 4x) + 6
Thus, first block contains -1 and second block contains 4.
2. Then we add half of the coefficient of x², (b/2)², inside the bracket and subtract it outside a times, a(b/2)².
f(x) = -1 ( x² + 2. 2x + 2²) +2² + 6
f(x) = -1 ( x² + 4x + 2²) +4 + 6
Thus, first block contains -1, second block contains 4, third block contains 4, and fourth block contains 4.
3. Then we factorize the bracket and simplify outside the bracket;
f(x) = -1 (x + 2)² + 10
Thus, first block contains -1, second block contains 2 and third block contains 10.
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6. Solve for x: please explain
Answer:
5
Step-by-step explanation:
the angles need to add up to 180
60 + 40 =100
180 - 100 =80
80 - 5 =75
75/15 =5
What is the length of the hypotenuse? If necessary, round to the nearest tenth.
Answer:
75 mm
Step-by-step explanation:
Pythagorean theorem:To find the hypotenuse, use Pythagorean theorem
Hypotenuse² = base² + altitude²
c² = 21² + 72²
= 441 + 5184
= 5625
[tex]\sf c = \sqrt{5625}[/tex]
[tex]= \sqrt{75*75}\\\\\boxed{\bf c = 75 \ mm}[/tex]
What is 9 squared?
Why?
Why do we call this "Squared"?
What is 5 cubed?
Why?
Why do we call this "Cubed"?
Answer:
The squared root of 9 is 3
Why - Half of 9 is 3
Why do we called this squared - It is the positive solution of the equation x2 = 9. The number 9 is a perfect square.
5 Cubed is equal to 125
Why - The number 125 on prime factorization gives 5 × 5 × 5. On combining the prime factors in groups of 3 gives 5
Why do we call this cubed = The cube of a number is that number times itself times itself. 5 cubed, denoted 53, is equal to 5×5×5, or 125.
Match the terms to their correct definitions.
1. Adjusted balance
planning for the distribution of one's estate after death
2. ATM Automatic (or Automated) Teller Machine
the annual interest ÷ cost
3. Bond
a share in the ownership of a company
4. Certificates of deposit (CD's)
document that specifies how one desires his estate to be distributed upon his death
5. Checking account
a share of money earned as profits by a company and distributed to its stockholders
6. Club account
a sum on deposit usually for a given period of time at a fixed interest rate
7. Compound interest
accounts are set up to save for specific purchases
8. Debit card
can be used like a credit card, but money is deducted directly from bank account
9. Dividend
a trust established while the owner of the trust is still alive
10. Estate planning
interest figured only on the amount of money in the savings account
11. Interest
interest figured on the amount of money in the savings account plus the amount of interest already earned
12. Intestate
permits the customer to make transactions by using a special computer terminal
13. Investment
an estate, or other property or money, given to a person or institution to manage
14. Living trust
like loaning money to the company for interest
15. Mutual fund
account allows you to write an instruction to the bank, as a check, to make a payment from that account
16. Simple interest
without a will
17. Stocks
a commitment of money in order to gain a financial return
18. Trust
investment instrument in which you purchase a part of a collection of investments
19. Will
balance after adding the outstanding deposits and subtracts the outstanding checks to the balance on the statement
20. Yield
the fee a bank pays you to keep your money
Lets try to figuring out the definition of it.
1. Planning for the distribution of one's estate after death is Estate planning.
2. Trust: an estate, or other property or money, given to a person or institution to manage.
3. Compound interest: figured on the amount of money in the savings account plus the amount of interest already earned.
4. Dividend: a share of money earned as profits by a company and distributed to its stockholders.
5. Checking account: account allows you to write an instruction to the bank, as a check, to make a payment from that account.
6. Will a legal document that describes how your estate should be distributed upon.
8. Purchasing a bond is like loaning money to the company for interest.
9. Club accounts: accounts are set up to save for specific purchases.
11. Mutual fund: instrument in which you purchase a part of a collection of investments.
12. A debit card can be used like a credit card, but money is deducted directly from bank account.
13. Automatic Teller Machine: permits the customer to make transactions by using a special computer terminal.
14. Adjusted balance: balance after adding the outstanding deposits and subtracts the outstanding checks to the balance on the statement.
15. Certificate of deposit (CD) is a sum on deposit usually for a given period of time at a fixed interest rate.
18. A trust created while a person is still alive is called a Living Trust.
19. Intestate: without a will.
20. Interest is the fee a bank pays you to keep your money.
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Answer:
1. Planning for the distribution of one's estate after death is Estate planning.
2. Trust: an estate, or other property or money, given to a person or institution to manage.
3. Compound interest: figured on the amount of money in the savings account plus the amount of interest already earned.
4. Dividend: a share of money earned as profits by a company and distributed to its stockholders.
5. Checking account: account allows you to write an instruction to the bank, as a check, to make a payment from that account.
6. Will a legal document that describes how your estate should be distributed upon.
8. Purchasing a bond is like loaning money to the company for interest.
9. Club accounts: accounts are set up to save for specific purchases.
11. Mutual fund: instrument in which you purchase a part of a collection of investments.
12. A debit card can be used like a credit card, but money is deducted directly from bank account.
13. Automatic Teller Machine: permits the customer to make transactions by using a special computer terminal.
14. Adjusted balance: balance after adding the outstanding deposits and subtracts the outstanding checks to the balance on the statement.
15. Certificate of deposit (CD) is a sum on deposit usually for a given period of time at a fixed interest rate.
18. A trust created while a person is still alive is called a Living Trust.
19. Intestate: without a will.
20. Interest is the fee a bank pays you to keep your money.
Step-by-step explanation:
8y and y are like terms
true
or
false
Answer:
True
Step-by-step explanation:
Hope this helps :)
Which number line represents the solution set for the inequality 3(8 – 4x) < 6(x – 5)?
A number line from negative 5 to 5 in increments of 1. An open circle is at 3 and a bold line starts at 3 and is pointing to the left.
A number line from negative 5 to 5 in increments of 1. An open circle is at 3 and a bold line starts at 3 and is pointing to the right.
A number line from negative 5 to 5 in increments of 1. An open circle is at negative 3 and a bold line starts at negative 3 and is pointing to the left.
A number line from negative 5 to 5 in increments of 1. An open circle is at negative 3 and a bold line starts at negative 3 and is pointing to the right.
A number line from negative 5 to 5 in increments of 1. An open circle is at 3 and a bold line starts at 3 and is pointing to the right. So the correct answer is option B.
What is inequality?inequality the relationship between two expressions that are not equal, employing a sign such as ≠ “not equal to,” > “greater than,” or < “less than.”.
We can start by dividing the inequality by 3 to get ...
8 -4x < 2(x -5)
And we can divide by 2 to simplify further to ...
4 -2x < x -5
Now, we can add 2x+5, which gives ...
9 < 3x
and then divide by 3 again:
3 < x
Therefore number line from negative 5 to 5 in increments of 1. An open circle is at 3 and a bold line starts at 3 and is pointing to the right. So the correct answer is option B.
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There are 7 pieces of pie over in the cafeteria. If 5 pieces are apple and 2 are cherry, what fraction of the remaining pieces are cherry?
Answer:
No
Step-by-step explanation
because 5+2=7 so I don't have a piece of cake left over
A graph is shown below
what is the equation of the line in slope intercept form HELP ASAP
Answer:
y = -2x + 16
the y intercept is the y value at x = 0. On the graph there is a dot at 16 on x= 0, so the y intercept would be 16.
the only answer choice adding 16 sis y = -2x + 16
Round to the nearest tenth. B 63 142° 61 A C X x = [?]
The value of x in the triangle is 117.2 units
The missing image is attached with the answer.
What is an Equation?An equation is formed when two expression is equated by an equal sign to a constant , variable or an expression.
Cosine rule of Triangles is used and is given by
c² = a² + b² - 2ab cos C
Where a, b, c are the sides and C is the angle opposite side c.
from the given data in the figure
c = 63
a = 61 and
angle B is 142 degree
x² = 63² + 61² - 2(63)(61) * cos(142)
On solving
x = 117.2
The value of x in the triangle is 117.2 units
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what is the correct answer
What are all the solutions of x² + 3x -4 = 0? Multiple choice
A: -4
B:-2
C:-1
D:0
E:1
F:2
G:4
Answer :
A and E .
Step-by-step explanation:
A gym has 65 members. If 35 are men and the
rest are women, what is the ratio of the female
members to the total members of the gym?
Answer:
Step-by-step explanation:
số nữ là 65- 35= 30
vậy tỷ lệ số tv nữ trên tổng số thành viên của phòng tập là 30/65 = 6/13
I need help please! What’s the answer?
Answer:
x = 17.32 units
Step-by-step explanation:
In a right triangle tan (angle) = opposite leg / adjacent leg...
for this triangle tan 27° = 34 / x
then x = 34 tan 27° = 17.32 units
Which inequality is shown on this graph?
The inequality which shows the graph is [tex]y\le\ 4x+2[/tex].
What is inequality?A statement of an order relationship—greater than, greater than or equal to, less than, or less than or equal to—between two numbers or algebraic expressions.
As, from the inequalities the graph is representing the fourth inequality.
The graph attached below show the graph corresponding to
[tex]y\le\ 4x+2[/tex] is shown.
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PLEASE HELP
If the perimeter of a garden is 16 yards, how many inches is it? Hint: There are 3 feet in 1 yard.
If 3 ft = 1yard
? = 16 yards?
Thats [tex]\frac{16 yards * 3ft}{1yard}[/tex]
The common values cancel each other out and you'll have 48 feet :)
1. Kelsey spent 55 hours over 2 weeks working on a ELA project. She worked 32 hours the
Answer:
23
Step-by-step explanation:
If Kelsey spent 32 hours in the first week. We subtract 32 from 55. 55-32=23. That means she worked 23 hours in the second week.
