Answer:
x=3.5
Step-by-step explanation:
2.8/4=x/5
cross multiply
2.8(5)=4x
14=4x
x=14÷4
x=3.5
A gallon of paint can cover 50 square feet. Find how many gallon containers of paint should be bought to paint 3 coats
on each wall of a rectangular room with dimensions 10 feet by 18 feet and walls that are 8-feet tall.
Answer:
27 gallons
Step-by-step explanation:
A rectangular room is a rectangular prism. The floor and ceiling are the bases. The walls are the lateral faces. The lateral are of a rectangular prism is the product of the perimeter of the base and the height of the prism.
lateral area = Ph
lateral area = 2(10 ft + 18 ft) × 8 ft
lateral area = 448 ft²
area of walls = 448 ft²
area of three coats = 3 × 448 ft² = 1,344 ft²
area covered by 1 gallon of paint = 50 ft²
number of gallons of paint needed = 1344 ft² / 50 ft² = 26.88
Answer: 27 gallons
Consider a population with 3 observations: 6, 10 and 12. You use simple random sampling without replacement to select a sample of 2 observations. What is the probability that the sample mean is larger than 8?
Answer:
[tex]\dfrac{2}{3}[/tex]
Step-by-step explanation:
Given that:
The number of observations is:
6, 10, 12
If we are to use a simple random sampling without replacement, then we will have:
(6,10) (6,12) (10,12)
Here;
the sample size n = 2
The population size N = 3
For (6,10) ; The sample mean = [tex]\dfrac{6+10}{2}[/tex]
= [tex]\dfrac{16}{2}[/tex]
= 8
For (6,12) ; The sample mean = [tex]\dfrac{6+12}{2}[/tex]
= [tex]\dfrac{18}{2}[/tex]
= 9
For (10, 12) ; The sample mean = [tex]\dfrac{10+12}{2}[/tex]
= [tex]\dfrac{22}{2}[/tex]
= 11
The probability distribution of sample mean(x) is:
X 8 9 11
P(X=x) [tex]\dfrac{1}{3}[/tex] [tex]\dfrac{1}{3}[/tex] [tex]\dfrac{1}{3}[/tex]
Thus, the probability that the sample mean is larger than 8 is:
P(X> 8) = P(X = 9) + P(X + 11)
P(X> 8) = [tex]\dfrac{1}{3}+\dfrac{1}{3}[/tex]
P(X > 8) = [tex]\dfrac{1+1}{3}[/tex]
P(X> 8) = [tex]\dfrac{2}{3}[/tex]
plz help me with this???
Answer:
[tex]\frac{9}{28}[/tex]
Step-by-step explanation:
Shaded area = 1 - [tex]\frac{1}{4}[/tex] - [tex]\frac{3}{7}[/tex] (Make them have the same denominator, 28)
= [tex]\frac{28}{28}[/tex] - [tex]\frac{7}{28}[/tex] - [tex]\frac{12}{28}[/tex] (Simplify)
= [tex]\frac{28}{28}[/tex] - [tex]\frac{19}{28}[/tex] (Evaluate)
= [tex]\frac{9}{28}[/tex]
Answer:
9/28 is the answer
Step-by-step explanation:
it maybe really late.
Write this number using digits: seventy-five thousand, four hundred thirty-seven
75,437
hope this helps
PLEASE HELP!! 20 POINTS!!
Answer:
[tex]12\sqrt{3}[/tex]
Step-by-step explanation:
I do not know if this is completely correct
In their last game, the Arizona Cardinals scored 9 points in the first half. In the second half, they scored three less than two times the points in the first half. What is the ratio of the points scored in the second half to the total number of points scored?
Please HELP!
Answer:
[tex]\huge\boxed{\sf 15:24 }[/tex]
Step-by-step explanation:
In the first Half:
9 points
In the second half:
2(9)-3 = 18 - 3 = 15 points
Total Points:
9 + 15 = 24 points
Ratio of points scored in the second half to the total points:
15 : 24
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807help please! nobody has been answering my questions :( !!!!!!
if someone answers this correctly I'll give em 100 points
this i dont understand i dont understand what an interception is -
Answer: its 2
Step-by-step explanation: An intercept is where the line crosses over the x or y axes.
What will the y-coordinate/value be for A' (A
prime) if Triangle ABC is reflected about the y-
axis?
what are the coordinates if you tell me that I can help you
What is the answer to -12 = 4(f - 6)
Answer:
f= 3
Step-by-step explanation:
-12 = 4f-24
+24. +24
----------------
12 = 4f
/4. /4
-----------
f= 3
Answer:
3
Step-by-step explanation:
-12 = 4(f - 6)
-12/4 = (4(f - 6))/4
-3 = f - 6
-3 + 6 = f - 6 + 6
3 = f
Ashton is paid $90 for 5 hours of work. He earned $18 in 1 hour. He earned $144 in 8 hours. At this rate, how much would Ashton be paid in 3 hours of work?
Answer:$54 for 3 hours of work
Step-by-step explanation:
Multiply 18 times 3
and you get 54
Quadrilateral ABCD has vertices A ( 5,0) , B ( 3,6) , C (-3,6) , and D( -4, -5) . If ABCD is reflected in ×-axis, and then rotated by 90 degrees clockwise about origin to get a new quadrilateral A'B'C'D' , what is the distance between B' to C'. Enter the distance here
The final coordinates of B' and C' after the rotation are B''(6, -3) and C''(6, 3) while the distance between both points is; 6
Distance between B" and C" is;
B"C" = √[(6 - 6)² +(3 + 3)²]
B"C" = 6
What is the distance between coordinates?We are given coordinates of vertices of Quadrilateral ABCD as;
A ( 5,0) , B ( 3,6) , C (-3,6) , and D( -4, -5)
Reflection about the x-axis gives; B (3, 6) , C(-3, 6)
Now, the transformation rule for rotating 90 degrees clockwise is;
(x, y) becomes (y, -x)
Thus, coordinates B' and C' are now;
B''(6, -3) and C''(6, 3)
Distance between B" and C" is;
B"C" = √[(6 - 6)² +(3 + 3)²]
B"C" = 6
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PLEASE HELP FAST I ONLY HAVE ONE HOUR!!!!!
The correct option regarding the standard deviation of the residuals is given by:
The point will increase the standard deviation of the residuals because it has a large negative residual.
What are the mean and the standard deviation of a data-set?The mean of a data-set is given by the sum of all values in the data-set, divided by the number of values.The standard deviation of a data-set is given by the square root of the sum of the differences squared between each observation and the mean, divided by the number of values.Considering a scatter plot and a line of best fit, a residual is the difference between the observed value(scatter plot) and the predicted value(line of best fit).
Hence, the circled value has a large negative residual. For the standard deviation, the differences are squared, hence the circled value increasing the standard deviation, and the correct option is:
The point will increase the standard deviation of the residuals because it has a large negative residual.
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The degree measure of two consecutive angles of a rhombus are represented by 5x+10 and 3x+50 find x
Answer:
23
Step-by-step explanation:
Write the missing number that makes each equation true. Show your work. __ - 4 = 16 - 5
it is 15 cuz 15-4=11 and ,16-5=11
The missing number in the expression equivalent to 16 - 5 is 15 - 4.
What is a numerical expression?A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.
Given, two expressions ___ - 4 = 16 - 5.
Now, RHS of the expression can be written as,
16 - 1 - 4.
= 15 - 4.
Therefore, LHS of the equation is 15 - 4.
So, 15 - 4 = 16 - 5.
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What type of number is √14? (square root of 14) Multiple answers can be selected.
A. Rational
B. Irrational
C.Natural
D. Whole
F. Integer
What type of number is -4? (Multiple answers can be selected)
A. Rational
B. Irrational
C.Natural
D. Whole
F. Integer
What type of number is 3/8 (Multiple answers can be selected)
A. Rational
B. Irrational
C.Natural
D. Whole
F. Integer
What type of number is 3.0? (Multiple answers can be selected)
A. Rational
B. Irrational
C.Natural
D. Whole
F. Integer
Answer:
1. B irrational number
2. A and F
3.A and C
4.A ,C , F and D
Step-by-step explanation:
1. Is the square root of 14 a rational number? No, the square root of 14 is not a rational number. It is an irrational number as it cannot be expressed in the form of p/q.
2.−4 is an integer. We can say it is also a rational number, but it is neither a natural number, whole number, irrational number nor an imaginary number.
3. 3/8 is a rational number and a whole number because its more than 0
4. When a rational number is split, the result is a decimal number, which can be either a terminating or a recurring decimal. All rational numbers can be expressed as a fraction whose denominator is non-zero. Here, the given number, 3 can be expressed in fraction form as 3⁄1. Hence, it is a rational number.
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Samuel pays $59.99 plus $0.25 for each minute over 450 minutes for his cell phone plan. Monica
pays $64.99 plus $0.10 for each minute over 450 minutes for her cell phone plan. Which system
of equations represents this situation? Letx represent the number of minutes over 450
Answer:
D
Step-by-step explanation:
Samuel pays 59.99 for the 450 minutes but when he goes over he pays 0.25 for each minute he goes over. The same thing for Monica
The correct option is D
Given that,
Samuel pays $59.99 plus $0.25 for each minute over 450 minutes for his cell phone plan. Monica pays $64.99 plus $0.10 for each minute over 450 minutes for her cell phone plan.Based on the above information, the equation is as follows:
y = 59.99 + 0.25x
y = 64.99 + 0.10x
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Plz, help! Due soon!
You have just been hired as New York’s premier Real Estate Agent! In your company, you will make a 7% commission. The real estate market in New York is booming! As the realtor calculates your potential commission if you sell the property for list price.
If the listing price for Candy Cane Creek is $864, 550, how much commission would you receive?
Answer
$60,515:
Step-by-step explanation:
Answer:
$60,515:
..............
PLS HELP ASAP BRAINLIEST IF RIGHT AND 100 POINTS PLSSS
Train A is traveling north at a steady speed of 70 miles per hour. After 2
hours, it is 150 miles north of Hillsboro.
Train B is traveling north on a parallel track. Its distance north of Hillsboro is
represented by the graph.
Answer:
its d
Step-by-step explanation:
Please help. I will give you brainlest
Answer:
B or C one of those
Step-by-step explanation:
Will mark Brainliest
Which conic section is represented by the following equation?
5x^2-x+5y^2 – 3y + 4 = 0
circle
ellipse
parabola
hyperbola
Answer:
I believe its hyperbola
Answer:
ellipse
Step-by-step explanation:
just got it right on edg ^u^
Find the value of x that makes each parallelogram the given type
The value of x that will make each of the parallelogram the given type is:
11. x = 6.5
12. x = 3
What are Some Examples of Parallelogram?A parallelogram is any quadrilateral whose opposite sides are parallel and equal to each other.
Examples of a parallelogram include:
RhombusSquareRectangle11. The diagonals of a square intersect at right angles, therefore:
13x + 5.5 = 90
13x = 90 - 5.5
13x = 84.5
x = 84.5/13
x = 6.5
12. The four sides of a rhombus are equal in length, therefore:
14 - x = 2x + 5
14 - 5 = 2x + x
9 = 3x
9/3 = x
x = 3
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6/7=y−3/7
y=?
Does anybody know what the answer to this question is?
If you know, please tell me. I'm really in a hurry.
your time to shine you smart and bright people hahah
Solve each system by substitution
4y - 6 = 2x
y- 3x=9
Answer:
your answer is -3,0
Step-by-step explanation:
if you wanna check you can plug it into the bottom equation y -3(-3) =9
so 9=9 which is a true statement
How are the figures similar?Explain
Answer:
Yes, the given figure are similar but not congruent. All the edges are making angles of 90°.
Use thUse the transformations on the function f(x) = x| to select the correct graph of
e transformations on the function f(x) = x| to select the correct graph of
Answer:
the graph that starts at (0,1) and has a rise/run of 1/3
Step-by-step explanation:
What is the difference between the following two regression equations? Choose the correct answer below.
A. The first equation is for sample data; the second equation is for a population.
B. The first equation is for a population; the second equation is for sample data.
Answer:
The correct option is (A). The first equation is for sample data; the second equation is for a population.
Step-by-step explanation:
According to the scenario, the following would be represented as a sample and the population
Y with caret = b0 + b1x = sample
and
y = b0 + b1x = population
It is because if we considered the population than the expected value would be nearest and there is no need to determine the b0 and b1 value again. But in the case of the sample, the reestimation of the values would be determined again and again
Therefore the correct option is A.
HELP PLS!!!
Which expression shows how to convert 60 hours to days?
A 60 hours 1 hour 1 24 days
B 60 hours 1 day Х 1 24 hours
C 60 hours 24 hours X 1 1 day
D 60 hours 24 days 1 1 hour X
Answer:
B. [tex] \frac{60 hours}{1} \times \frac{1 day}{24 hours} [/tex]
Step-by-step explanation:
Converting 60 hours to days:
24 hours = 1 day
60 hours = x day
Cross multiply
[tex] 24 hours \times x = 60 hours \times 1 day [/tex]
Divide both sides by 24 hours
[tex] x = \frac{60 hours \times 1 day}{24 hours} [/tex]
Thus,
[tex] \frac{60 hours \times 1 day}{24 hours} = \frac{60 hours}{1} \times \frac{1 day}{24 hours} [/tex]
The expression that shows how to convert 60 hours to days is:
[tex] \frac{60 hours}{1} \times \frac{1 day}{24 hours} [/tex]