Answer:
There are two solutions
1.x =(8-√152)/4=2-1/2√ 38 = -1.082
2.x =(8+√152)/4=2+1/2√ 38 = 5.082
Step-by-step explanation:
If SSR=30 and SSE=20, determine SST, then compute the coefficient of determination, r2, and interpret its meaning. SST=nothing r2=nothing (Type an integer or a decimal. Do not round.) Interpret the meaning of r2. Choose the correct answer below. A. It means that 1−r2 of the variation in the dependent variable cannot be explained by the variation in the independent variable. B. It means that r2•100% of the variation in the dependent variable can be explained by the variation in the independent variable. C. It means that 1−r2•100% of the variation in the independent variable cannot be explained by the variation in the dependent variable. D. It means that r2 of the variation in the independent variable can be explained by the variation in the dependent variable.
Answer:
R² value implies that 60% of the variation in the dependent variable can be explained by the variation in the independent variable.
Step-by-step explanation:
The information provided is:
SSR = 30
SSE = 20
Compute the total sum of squares as follows:
SST = SSR + SSE
= 30 + 20
= 50
The coefficient of determination R² specifies the percentage of the variance in the dependent-variable (Y) that is forecasted or explained by linear regression and the forecaster variable (X, also recognized as the independent-variable).
The coefficient of determination R² can be computed as follows:
[tex]R^{2}=\frac{SSR}{SST}[/tex]
[tex]=\frac{30}{50}\\\\=0.60[/tex]
The coefficient of determination value is 0.60 or 60%.
This value implies that 60% of the variation in the dependent variable can be explained by the variation in the independent variable.
Find M<1 in the figure below. PQ and RS are parallel
Answer:
m∠1= 105°
Step-by-step explanation:
The m∠1 and 75° are supplementary angles that sum up to 180°.
The equation here would be: m∠1+75= 180.
Step 1- Subtract 75 to both sides of the equation.
m∠1+75= 180
-75 -75
m∠1= 105
Hope this helps! :)
Answer: The answer would be 105.
Step-by-step explanation:
If you look at the angle's corresponding angle, then you will see that it is right next to angle one. So the angle next to angle one is also 75 degrees because it is the same angle or the corresponding angle to the other one that is 75 degrees. So, together, angle one and the angle next to it should equal 180 degrees. So you subtract 180-75=105. And angle one equals 105.
Of 1000 randomly selected cases of lung cancer, 838 resulted in death within 10 years. Construct a 95% two-sided confidence interval on the death rate from lung cancer. (a) Construct a 95% two-sided confidence interval on the death rate from lung cancer. Round your answers to 3 decimal places. (b) Using the point estimate of p obtained from the preliminary sample, what sample size is needed to be 95% confident that the error in estimating the true value of p is less than 0.03
Answer:
0.8152 ≤ p ≤ 0.8608
579
Step-by-step explanation:
Given the following :
Samples size n = 1000
Deaths within 10 years, p = 838
α = 95%
Construction a two way confidence interval:
p ± Zα/2 * √p(1-p) / n
point estimate p = 838/n = 838/1000 = 0.838
Z0.05/2 = Z0.025 = 1.96
0.838 - 1.96√0.838(1-0.838) / 1000
0.838 - 1.96*0.0116514 = 0.8152
0.838 + 1.96√0.838(1-0.838) / 1000
0.838 + 1.96*0.0116514 = 0.8608
0.8152 ≤ p ≤ 0.8608
b) Using the point estimate of p obtained from the preliminary sample, what sample size is needed to be 95% confident that the error in estimating the true value of p is less than 0.03
Error (E) = 0.03
To find the samome size, use the relation:
n = (Zα/2 / E)² * p(1-p)
n = (1.96/0.03)² * 0.838(1-0.838)
n = (1.96/0.03)² * 0.838 * 0.162
n = 4268.4444 * 0.838 * 0.162
n = 579.46
n = 579
hello I need help on it
what is /4 of 3/4 =
What is 1/4 of 3/4 =
Answer:
3/16
Step-by-step explanation:
1) multiply the fracton/percentage wanted from the entire thing
> 1/4×3/4=3/16
Answer: The answer to this basic math question with a given basic fraction expression is [tex]\frac{3}{16}.[/tex]
Step-by-step explanation: Mmmm, that was super extremely easy, so anyways, here is a basic step in order to evaluate the given basic fraction expression:
The word "Of" is the same as multiplication, so we replaced the word "Of" with a multiplication sign that looks in the new basic fraction equation form like this: [tex]\frac{1}{3}*\frac{3}{4} = ?.[/tex] For the fraction multiplication, let's multiply the numerators and then multiply the denominators in order to get [tex]\frac{3}{16}[/tex] that looks in the basic fraction equation form like this: [tex]\frac{1*3}{4*4}=\frac{3}{16}.[/tex] And therefore, your answer to this basic math question with a given basic fraction expression is [tex]\frac{3}{16}.[/tex]I hope that my full given answer with my full given step-by-step explanation is very helpful to your own basic math question with a given basic fraction expression, please mark me as Brainliest, take care, always be safe, and have a great rest of the holiday winter break, and a happy new year! :D
Sincerely,
Jason Ta,
The Ambitious of The Brainly And The Role of The TDSB And WHCI Student of The High School.
The amount the price of an item is increased above the price the store paid for the item?
Answer:
Markup
Step-by-step explanation:
I don't understand this can you help me pls?
A dog-washing salon is filling up the tub to was a dog. When the employee got to the tub,
there were already 2 gallons of water in the tub. She will fill the tub at a rate of 3 gallons a
minute.
Answer:
If there was 2 gallons in the tub at the moment, it must mean that it has been 2/3 of a minute or 40 seconds.
The two rates would be 3:60 and 2:40 and so on 1:20
Step-by-step explanation:
Good luck! Hope this helps! <3
This is a lot of questions AND WHOEVER ANSWERES THESE BY THURSDAY 10/22/2020 WILL BE HONORED BY ME. I WILL MARK THE BRANLIEST.
1. What’s a better buy? 16 ounces of crackers for $4.00 or 20 ounces of crackers for $5.00?
2. What’s a better buy? 3 bagels for $2.85 or 5 bagels for $4.00?
3. What's a better buy? 3 pounds of apples for $1.89 or 1 pound of apples for $.79?
4. What's a better buy? 80 marbles for $4.99 or 90 marbles for $5.99?
5.Which rate is better? Sam runs 10 miles in 1 and 1/9 of an hour. Rina runs 8 miles in 7/8 of an hour.
6. Which rate is better? Emily bikes 18 miles in 2 hours. Ella bikes 22 miles in 2.5 hours.
7.Which rate is better? Dan types 100 words in 5 minutes. Dora types 118 words in 6 minutes.
8.Which rate is better? Fran reads 60 pages in 2 hours. Fanny reads 100 pages in 3 hours.
9.Which rate is better? Mona earns $44.55 in 9 hours. Mina earns $51 in 12 hours.
10.Which rate is better? Todd scored 132 points in 12 games. Terry scored 81 points in 8 games.
I KNOW IT'S A LOT BUT IF YOU KNOW THE ANSWERS TO SOME, THEN PLEASE SAY SO. AGAIN, I WILL MARK BRAINLIEST!!
Answer:
1. both are the same
2. 20 ounces
3. 3 pounds
Step-by-step explanation:
if the crab 5ft below sea level and the cliff is 3ft above the sea level what is the distance between them?
8ft is the dstance between them.
5+3 = 8
The square below represents one whole.
What percent is represented by the shaded area?
No. of total boxes=100
No. of total shaded boxes=85
percentage of the shaded area=85/100×100=85%
Use encryption matrix A to encrypt the plain text message.
matrix 2
Encrypted message = matrix 3
e11 =
e12 =
e13 =
e21 =
e22 =
e23 =
Please help algebra is kicking my butt
Answer:
e11 = 5
e12 = 8
e13 = 4
e21 = 8
e22 = -7
e23 = 16
Step-by-step explanation:
ik this is really late but I hope this helps someone doing edge. have a nice day :)
Helppppppp plzzzzzzzzzxzxzmfyfdtidt
Answer:
y=7
Step-by-step explanation:
Distribute: 9y-4y-4=31
Add like terms: 5y-4=31
Isolate: 5y=35
Divide each side by 5: y=7
ANSWER: y=7
Hope this helps
If a car is traveling 75 miles per hour, how many feet will it travel in 10 seconds ?
If 1 mile= 5280 feet, So If a car is traveling 75 miles per hour, then it is travelling 1100 feet in 10 seconds.
What is 1 mile in ____ feet?1 mile= 5280 feet
A car is traveling 75 miles per hour, we need to find how many feet it travel in 10 sec.
1 hour = 60*60 = 3600 seconds
75 miles: 1 hour
75 miles: 3600 seconds
75/3600 miles: 3600/3600 seconds
1 second: 1/48 mile
1/48 miles = (1/48)*5280 = 110 feet
So you're going 110 ft per second. In other words, the car travels 110 feet in 1 second.
For 10 seconds 110*10=1100.
Therefore 1100 feet will car travel in 10 seconds.
To learn more on miles and feet click: https://brainly.com/question/2566034
#SPJ2
Sharon wants to open a checking account from which to pay bills. She wants online services, and a debit card, which both banks provide for free. Based upon past experience, she expects to accidentally overdraft the account 1 time per year, due to unexpected charges and miscommunications. She expects no 2nd copies of statements, and to use network ATMs 4 times per month with either bank. She has $3300 in an emergency savings account at First State Bank, and thinks that the balance will be enough to cover overdrafts in the future if automatic transfers are made when needed.
Answer:
a.No, Common Bank will save Sharon more money.
Step-by-step explanation:
There are two banks i.e. first state bank and the common bank that should be compared in the table depend upon the prices of both the banks
On seeing it we get to know that the first state bank would charged a fee on a monthly basis i.e. $4 while on the other hand the common bank has no fee on the monthly basis
Also the unsufficient bonds are more cheaper in the common bank if we compared with the first state bank
Moreover, the $7 is charged in the first state bank and $3 charged in the common bank.
Therefore the common bank would become cheaper
Hence, the correct option is a.
Answer:
Sharon wants to open a checking account from which to pay bills. She wants online services, and a debit card, which both banks provide for free. Based upon past experience, she expects to accidentally overdraft the account 1 time per year, due to unexpected charges and miscommunications. She expects no 2nd copies of statements, and to use network ATMs 4 times per month with either bank. She has $3300 in an emergency savings account at First State Bank, and thinks that the balance will be enough to cover overdrafts in the future if automatic transfers are made when needed.
A 4-column table with 5 rows. Column 1 is labeled First State Bank with entries monthly fee, non-sufficient funds fee, second copy of statement, network A T M usage, non-sufficient funds protection from a First State Bank savings account. Column 2 is labeled Description with entries 4 dollars, 36 dollars, 7 dollars, 3 dollars each transaction, 4 dollars on each day that a transfer occurs to cover an overdraft. Column 3 is labeled Common Bank with entries monthly fee, non-sufficient funds, second copy of statement, network A T M usage, non-sufficient funds protection from a Common Bank savings account. Column 4 is labeled Description with entries 0 dollars, 24 dollars, 4 dollars, 2 dollars each transaction, not offered with this account.
Based on the tables of fees, above, if Sharon chooses First State Bank, will it save her money over choosing Common Bank?
a. No, Common Bank will save Sharon more money. <<<---Correct b. Yes, First State Bank will save Sharon money. c. No, First State Bank and Common Bank would have the same costs for Sharon. d. No, costs cannot be estimated in advance, so this information cannot be used.Step-by-step explanation:
Edge 2021
There are 4 blue and 6 red marbles in a box. Two marbles are drawn at random without replacement. What is the probability having two blue marbles drawn?
Answer:
Probability having two blue marbles(Without replacement) = 2/15
Step-by-step explanation:
Given:
Number of blue marble = 4
Number of marble = 6
Find:
Probability having two blue marbles(Without replacement)
Computation:
Probability of first marble = 4 / 10
Probability of second marble = 3 / 9
Probability having two blue marbles(Without replacement) = [4/10][3/9]
Probability having two blue marbles(Without replacement) = 2/15
Which is a member of the solution set of -5 < x ≤ -1?
Answer:
-1
Step-by-step explanation:
Put these two numbers on a number line with the correct circles. Now choose from any of the between numbers.
What is the slope-intercept form of 3x + 5y = -15?
3x+5y=1 in slope-intercept form is y=−35x+15 .
Compare the proportional relationships. Which represents the greatest price per pound of walnuts
Answer:
B. Weight
Price
The price per pound of walnuts is the slope or unit rates of the graphs, lines and equations
The greatest price per pound of walnuts is $14.00
(a) Cost of 1.5 bags is $12.99
The unit rate is calculated as:
[tex]\mathbf{Rate = \frac{Cost}{Bags}}[/tex]
So, we have:
[tex]\mathbf{Rate = \frac{\$12.99}{1.5}}[/tex]
[tex]\mathbf{Rate = \$8.66}[/tex]
The price per pound of walnuts is $8.66
(b) The table
From the table, we have the following points
[tex]\mathbf{(x,y) =(0.2,2.80)\ (0.4, 5.60)}[/tex]
The unit rate is calculated as:
[tex]\mathbf{Rate = \frac{y_2 - y_1}{x_2 - x_1}}[/tex]
So, we have:
[tex]\mathbf{Rate = \frac{5.60 - 2.80}{0.4 - 0.2}}[/tex]
[tex]\mathbf{Rate = 14}[/tex]
The price per pound of walnuts is $14.00
(c) The graph
From the table, we have the following points
[tex]\mathbf{(x,y) =(0,0)\ (1, 11)}[/tex]
The unit rate is calculated as:
[tex]\mathbf{Rate = \frac{y_2 - y_1}{x_2 - x_1}}[/tex]
So, we have:
[tex]\mathbf{Rate = \frac{11 - 0}{1 - 0}}[/tex]
[tex]\mathbf{Rate = 11}[/tex]
The price per pound of walnuts is $11.00
By comparison, the greatest price per pound of walnuts is $14.00
Read more about rates at:
https://brainly.com/question/18065083
Two times the reciprocal of a number equals 16 times the reciprocal of 20. Find the number. (1 point)
Let the number be x .
Reciprocal of x :-
[tex] = \frac{1}{x} [/tex]
An equation to find x :-
[tex]2 \times \frac{1}{x} = 16 \times \frac{1}{20} [/tex]
[tex] \frac{2}{x} = \frac{16}{20} [/tex]
[tex]16 \times x = 20 \times 2[/tex]
[tex]16x = 40[/tex]
[tex]x = \frac{16}{40} [/tex]
[tex]x = \frac{4}{10} [/tex]
[tex]x= \frac{4 \div 2}{10 \div 2} [/tex]
[tex]x = \frac{2}{5} [/tex]
Reciprocal of x :-
[tex] = \frac{5}{2} [/tex]
Which means the number :-
[tex] = \frac{5}{2} [/tex]
We can check it by :-
[tex]2 \times \frac{2}{5} = \frac{16}{20} [/tex]
[tex] \frac{4}{5} = \frac{16}{20} [/tex]
[tex] \frac{4}{5} = \frac{16 \div 4}{20 \div 4} [/tex]
[tex] \frac{4}{5} = \frac{4}{5} [/tex]
LHS = RHS
Which means we have found the correct number .
Therefore , the value of the number , whose reciprocal multiplied by 2 gives 16 times the reciprocal of 20 is :-
[tex] = \frac{5}{2} [/tex]Jason inherited a piece of land from his great-uncle. Owners in the area claim that there is a 45% chance that the land has oil. Jason decides to test the land for oil. He buys a kit that claims to have an 80% accuracy rate of indicating oil in the soil. What is the probability that the land has oil and the test predicts it?
A.
0.09
B.
0.11
C.
0.36
D.
0.44
Answer:
0.36
Step-by-step explanation:
0.45 x 0.80
= 0.36
7 days left until launch of products with $668 left in budget. Need to spend $85 on last day. How many dollars do we spend on remaining days?
Answer:
In total, you have $668.00.
To reserve enough for the last day, you need to subtract the last day's budget:
This means that, for the remaining 6 days in the week, you have $583.00.
Assuming an equal amount is being spent each day, you can calculate the daily budget by dividing the remaining total by the number of days left.
To avoid going over budget, you can spend $97.16 per day for the other six days.
Hope this helps!
Step-by-step explanation:
HELP ME PLZZZZZZZZZZZZZZ
Answer: 1
Step-by-step explanation: HELP ME PLS TOO
If the two remote interior angles of a triangle measure 60 degrees and 38 degrees , what is the measure of the exterior angle.
Answer:x + y + z = 180
Step-by-step explanation:
The recipe for 1 pie calls for 2 cups of flour. Which statement is true?
A 12 cups of flour are needed for 6 pies.
B. O 8 cups of flour are needed for 4 pies.
C.
1 cup of flour are needed for 2 pies.
D.
9
cups of flour are needed for 8 pies.
Hi!
Lets use a ratio. the recipe calls for 2 cups, for every pie, which is one pie.
So the ratio is 2:1
Now, lets look at the possible answers.
A, has the ratio 12:6. We need to use the ratio 2:1 to make sure this is correct. 2 x 6 = 12, and 12 ÷ 6 = 2, so A is a possibility.
B, has the ratio 8:4. Again, we check with the first ratio 2:1. 2 x 8 = 16, and 16 ÷ 4 = 4, so because the first equation did NOT equal 4, B is not a possibility.
C, has the ratio of 1:2. Because its TWO cups for ONE pie, it wouldn't be correct, so C is not a possibility as well.
D, has the ratio of 9:8. Again, we need to check if its correct using the original ratio of 2:1. 2 x 9 = 18, and 18 ÷ 2 = 2. The ratios do not match, therefore D is not a possibility at all as well.
So, Your Answer Is: A, 12 cups of flour are needed for 6 pies. Also know as the ratio, 12:6
(Here's a tip. When using ratios, use the original ratio to help you out. If when you multiply it doesn't equal the 2nd ratio (as in, 0:6 ⇇⇇ that one right there), and then you divide and it equals the first ratio (as in, this one right here ⇉⇉0:6), it still incorrect.... if all of that made sense)
Hope this helps!
~~~PicklePoppers~~~1
2
How did Buddhism change as it spread throughout Asia?
Buddhism became less focused on seeking enlightenment.
Buddhism combined with Hinduism to create a new religion.
Buddhism split into three groups based on the places where it spread.
Buddhism adopted Christian and Islamic teachings to reach a wider audience.
Answer:
Buddhism split into three groups based on the places where it spread.
Step-by-step explanation:
Answer:
Buddhism split into three groups based on the places where it spread.
Step-by-step explanation:
a drawer contained 49 pencils and erasers. William removed p pencils from the drawer. the remaining pencils and erasers were in the ratio of 2:5. write an algebraic expression for the number of pencils left in the drawer.
Answer:
hey
Step-by-step explanation:
If It rained for 9.5 hours, how many inches of rain would have fallen?
Answer:
I believe the answer is 6.5 inches of rain
Step-by-step explanation:
6.33 (with 3 repeating forever) OR 6 [tex]\frac{1}{3}[/tex]
If it was 4 inches after 6 hours lets make an equation. h being the number of hours and i being the inches of rain.
[tex]\frac{4}{6}[/tex]xh = i
Now fill it in with what we know
[tex]\frac{4}{6}[/tex]x9.5 = i
Now solve it.
You get:
6.33 (with 3 repeating forever) OR 6 [tex]\frac{1}{3}[/tex]
Charlene and Gary want to make confetti. In order to get the right balance of ingredients for their tastes they bought 3 pounds of paper hearts at $2.46 per pound, 5 pounds of sparkling stars for $3.05 per pound, and 3 pounds of shiny coils for $2.33 per pound. Determine the cost per pound of the coffeti.
Answer:
0.712 cents per pound
Step-by-step explanation:
Since we are given the exact amount of each ingredient as well as the price for that amount then we simply need to calculate how much each pound of the confetti actually costs. We do this by adding together all of the pound of all of the ingredients and then adding together all of the costs. Lastly, we divide the cost by the total amount of pounds to find the cost per pound of the confetti like so...
3lbs. + 5lbs. + 3lbs. = 11 lbs.
$2.46 + $3.05 + $2.33 = $7.84
$7.84 / 11 lbs. = 0.712 cents per pound
Therefore, the cost per pound of the confetti is 0.712 cents per pound
How would you write 2 × 2 × 2 using exponents?
Answer:
2³
Step-by-step explanation:
2×2×2...there are 3 2s which is 2³
