Self-select sampling is a sample in which members choose to be in the survey.
True
False
Answer:
true
Step-by-step explanation:
PLEASE HELP ME!!!! 20 POINTS!!!!!!!
What is the correct expanded form and value of 4/5?
A. 4/5+4/5+4/5=12/5
B.4/5•4/5•4/5=64/125
C. 4+4+4+4/5=12/5.
D. 5/4•5/4•5/4=125/64
Help me with my math **50 pts** I mark brainliest**
Answer:
2)
[tex]2x + 6x + 8 = 32[/tex]
collect like terms
[tex]8x + 8 = 32[/tex]
move the constant to the right hand side and change its sign.
[tex]8x = 32 - 8[/tex]
Subtract the numbers
[tex]8x = 24[/tex]
Divide both sides of the equation by 8
[tex]x = 3[/tex]
Need help with number 3a and 3b ?
Answer:
4 and 4.1
Step-by-step explanation:
because sqrrt17 is about 4.123 (memmorized) and it's rounded down to 4 and down to 4.1
how do I solve -6(4 – t) = 121
Find each angle measure to the nearest degree please help
9514 1404 393
Answer:
4°48°Step-by-step explanation:
The inverse cosine function of your calculator is used to find the angle from the cosine value. (Be sure your calculator is set to 'degrees' mode.)
1) A = arccos(0.9976) ≈ 4°
2) U = arccos(0.6691) ≈ 48°
Daisy is making lemonade with water and lemons. Based on the table below, how many lemons are needed for 24 oz. of water?
ANSWER NOW PLEASE
400_349 is same as 200_?
Please help I will give Brainliest
What two numbers have a sum of 142 and a difference of 16?
Answer:
x=79,y=63 I have solve it in above picture
PLEASE SOMEONE HELP WITH MY MATH!
Answer:
Oop
Step-by-step explanation:
2. Randy has a house that is worth $250,000 but he still owes $175,000. He has a car that is worth $50,000 but he still owes $37,000. He has a motorcycle valued at $8,000 that is paid in full. He has a credit card bill with a balance of $3, 200. He has $200 in cash, $1,500 in his checking account, and $3,000 in savings. What is his net worth?
Answer:
$91,200
Step-by-step explanation:
I gave it my best shot sorry if it wrong
PLEASE HELP DUE SUPER SOON
Answer:
2 Blocks
Step-by-step explanation:
Answer:2/3
Step-by-step explanation: 2 blocks apart so just 1/3 times 2=2/3
Change 3 5/8 into an improper fraction.
Answer:
The improper fraction 29/8 is equal to the mixed number 3 5/8.
Step-by-step explanation:
The fractions is solved and the improper fraction is A = 29/8
Given data ,
To change 3 5/8 into an improper fraction, we need to combine the whole number and the fraction part.
The fraction part, 5/8, can be expressed as an improper fraction by multiplying the whole number, 3, by the denominator of the fraction, 8, and then adding the numerator, 5. This gives us:
3 * 8 + 5 = 24 + 5 = 29
The denominator remains the same, so the improper fraction is:
A = 29/8
Therefore , the value of A = 29/8
Hence , 3 5/8 can be expressed as the improper fraction 29/8
To learn more about fractions click :
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Please this is due in 1 hr and 11 minutes...
Please don’t answer this with one answer, blank or ridiculous answer this is serious....
Answer:
Angle R is congruent to angle Y; line ZX is congruent to line SQ
Step-by-step explanation:
Order matters when listing sides and angles, as in the question.
R is second listed angle, and so is Y.
Line ZX is first and third listed, so congruent side is line SQ
seven more than twice a number is greater than negative fifteen
Answer: 2n > -15
Step-by-step explanation:
We can use the variable n to show the unknown number.
It says that there is twice a number, meaning two of an unknown number. We can show it by using the term 2n.
It also states that 2n is greater than -15. Because of that, we can use the equation 2n > -15, to show that 2n is greater than -15.
(Quick note: The variable n just represents the unknown number, you can subsitutue any variable into its place.)
The Inequality that shows seven more than twice a number is greater than negative fifteen is; 2n > -15
What is inequality?Inequality is defined as the relation which makes a non-equal comparison between two given functions.
We can consider the variable n to show the unknown number.
That says, there is twice a number, meaning two of an unknown number. We can show it by using the term "2n".
It states that seven more than twice a number is greater than negative fifteen
MEans 2n is greater than -15.
we can use the equation 2n > -15, to show that 2n is greater than -15.
Learn more about inequality ;
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Total world consumption of iron was approximately 900 million tons in 1993. If consumption had increased by 2.5% each year and the resources available for mining in 1993 were 450 billion tons, how much longer would the world’s iron resources have lasted?
Step-by-step explanation:
We can model the annual consumption of iron by the equation
c = 900 million tons x [tex]1.025^n[/tex], where
n is the number of years after 1993 and
c is the consumption for that year.
An estimate for the total consumption of iron can now be obtained by integrating this equation with respect to a dummy variable, x from 0 to n.
[tex]C = 900*10^6* \int\limits^n_0 {1.025^x} \, dx[/tex]
This equation simplifies to
C = 900 million tons x (1.025^n - 1) / ln(1.025), where
x is a dummy variable and
C is the total consumption of iron n years after 1993.
Let R be the amount of iron remaining at n years after 1993, so
R = 480 billion tons - C
R = 480 billion tons - 900 million tons x (1.025^n - 1) / ln(1.025)
We need to find the value of n when R is 0, so
0 = 480 billion tons - 900 million tons x (1.025^n - 1) / ln(1.025)
Simplify this equation to obtain
n = 107.4
So the iron will run out in the year 1993 + 107 = 2100
Estimate the sum or difference.
7/8-1/5
Answer:27/40
Step-by-step explanation:
7/8-1/5
35/40-8/40=27/40
The graph of y = 4x2 - 4x – 1 is show
Use the graph to find estimates for
the solutions of
i) 4x2 - 4x – 1 = 0
Answer:
Here we have the equation:
y = 4*x^2 - 4*x - 1
And we should have the graph (you can see it below this answer)
Now we want to find the solutions of:
4*x^2 - 4*x - 1 = 0
These solutions will be the two values of x at which the graph of our function intersects the line y = 0, that is the x-axis.
Then we need to find the two values of x at which our graph intersects the x-axis.
In the graph, we can estimate the solutions as:
x = -0.2
x = 1.2
To find the exact solutions we can use the Bhaskara's equation, and we will find that the solutions are given by:
[tex]x = \frac{-(-4) +- \sqrt{(-4)^2 - 4*4*(-1)} }{2*4} = \frac{4+ -\sqrt{32} }{8} = \frac{4 +-5.66}{8}[/tex]
Then the two solutions are:
x = (4 + 5.66)/8 = 11.2075
x = (4 - 5.66)/8 = -0.2075
Which list shows the plant growth in order from least to greatest?
A. 0.34, 0.3, 0.014, 0.104, 0.003
B. 0.003, 0.3, 0.014, 0.34, 0.104
C. 0.003, 0.104, 0.014, 0.3, 0.34
D. 0.003, 0.014, 0.104, 0.3, 0.34
Answer:
D
Step-by-step explanation:
the hundredth place should be less than the tenth place and so on.
Using the textbook example of 420 California school districts and the regression of testscores on the student-teacher ratio, you find that the standard error on the slope coefficient is 0.51 when using the heteroskedasticity robust formula, while it is 0.48 when employing the homoskedasticity only formula. When calculating the t-statistic, the recommended procedure is to A. use the homoskedasticity only formula because the t-statistic becomes larger B. first test for homoskedasticity of the errors and then make a decision C. use the heteroskedasticity robust formula D. make a decision depending on how much different the estimate of the slope is under the two procedures
Answer:
The answer is "Option C".
Step-by-step explanation:
Robust standard errors or generic White-Huber mistakes depending on this procedure. This is also recognized as the Variance Sandwich Stimator because of the appearance of the formula. Therefore, which is under homoskedasticity, robust error terms were appropriate, in which the standard deviations of its predictor variables are non-constant and are tracked across different values or linked to pre-time periods of an exponential function.
Amelia took a total of 18 quizzes over the course of 2 weeks. After attending 5 weeks of school this quarter,how many quizzes will Amelia have taken a total? Solve using unit rates
Answer:
45 quizzes
Step-by-step explanation:
Maribel is packing boxes of canned goods for the food drive. Each box can hold 8 books. How many boxes are needed for 122 books?
answer is:16 books
Answer:
16 boxes will be needed for 122 books.
Step-by-step explanation:
Given that,
Each box can hold 8 books.
We need to find the number of boxes needed for 122 books. It can be calculated as follows :
[tex]\dfrac{122}{8}[/tex] = 15.25
It means 15 boxes can be filled and 16 boxes will be needed for 122 books.
find the x (please help lol)
Answer:
x = 23.5
Step-by-step explanation:
x is the midsegment theorem of the trapezoid given.
Based on the midsegment theorem of a trapezoid, thus:
x = (7 + 40)/2
x = 47/2
x = 23.5
Which expression is equivalent to 8.6(x – 1) + 8x.
Answer:
16.6 x − 8.6
Step-by-step explanation:
Hope this helps
Find the rational zeros of 2x3 + 3x2 – 11x - 6
Answer:
(2x+1)(x−2)(x+3)
Step-by-step explanation:
2x3+3x2−11x−6
2x3+3x2−11x−6
=(2x+1)(x−2)(x+3)
Answer:
-1/2
2
-3
Step-by-step explanation:
Collectively, what are the interest costs and other fees for using a credit card called? A. balance B. credit line C. finance charge Reset Next
The correct answer is C. Finance charge
Explanation:
A credit card is a service offered by financial entities such as banks that allows customers to buy goods and pay them later. This implies the customer does not immediately for goods but pays for these after a specific time. The use of this benefit implies related costs such as fees for the use of the credit card, and interest costs (money charged for borrowing the money from the bank), which are known as finance charge or the money charged for the benefit of using credit. According to this, the correct answer is C.
Hello I need help
100ײ×100x²
Answer:
Today: Friday, 12th Feb 2021
10.11 PM
_______________________
[tex] \rm 100 {x}^{2} \times 100{x}^{2} [/tex]
[tex] \rm = (100 \times 100)^{2 + 2} [/tex]
[tex] {\boxed{\boxed{ \rm = 10000x^{4} }}}[/tex]
-
[tex]{\boxed{\boxed{ \rm \pink{i} \: \blue{hope} \: \orange{this} \: \pink{help} \: \blue{you} \: : )}}}[/tex]
Answer:
100ײ×100x²=100×100×x²×x²=10000x⁴ is your answer
Explain 5 different ways you use Math in your everyday life.
Answer:
Buying Groceries, paying for a house, maybe in your job, doing schoolwork of course, and counting money.
Step-by-step explanation:
Answer:
1. you use it to calculate time (managing your day)
2. you use it while driving (use in angles and degrees)
3. you use it while drawing (again, use in angles and degrees)
4. you use it while cooking
5. you use it while banking (financial help)
Step-by-step explanation:
hope this helps:) please mark brainliest
a train travels 16 miles in 20 minutes how many minutes would 12 miles be
Answer:Then 16x = 240, and x = 240/16 = 15. It will take 15 minutes to travel 12 miles.
Step-by-step explanation:
16 miles = 12 miles
20 mins. how many mins?
16 = 12 cross multiply 16? = 240 divide by 16 240 divided by 16 = 15 miles
20 ? because 15 x 16 = 240
Answer:
It will take 15 minutes to travel 12 miles.
Step-by-step explanation:
Write and solve an equation of ratios:
16 miles 20 min
----------- = -----------
12 miles x
Then 16x = 240, and x = 240/16 = 15.