Answers
Answer:
AD = 23
Step-by-step explanation:
Related Questions
Solve the inequality and enter your solution as an inequality in the box below,
using "<=" for sor">=" for 2 if necessary.
-2(5x + 1) > 48
Answer here
Answers
Answer:
x < -5
Step-by-step explanation:
-2(5x + 1) > 48
Divide by -2, remembering to flip the inequality
-2/ -2(5x + 1) < 48/-2
5x +1 < -24
Subtract 1 from each side
5x+1-1 < -24-1
5x < -25
Divide by 5
5x/5 < -25/5
x < -5
The two triangles are similar. What is the value of x? Enter your answer in the box. x =
Answers
Answer:
the value of x=12
Step-by-step explanation:
d) the answer is d on edg.
if jonny has 3 × 6 amounts of dish soap, how much dish soap does he have?!
a(I dont know)
b(18)
c(12)
d(6)
look up a skit called what's 6×3 before answering.
Answers
Answer: 18 (b)
Step-by-step explanation:
3x6=18
Answer:
18
Step-by-step explanation:
you can use a visual for a short answer or organize 3 dots in six groups, count in total
A mixture of pulverized fuel ash and Portland cement to be used for grouting should have a compression strength of more than 1300 KN/m^2. The mixture will not be used unless experimental evidence indicates conclusively that the strength specification has been met. Suppose compressive strength for specimens of this mixture is normally distributed with \sigma =60. Let \mu denote the true average compressive strength.What are the appropriate null and alternative hypothesis?
Answers
Answer:
The null hypothesis is: u >= 1300 KN/m^2
And the alternative hypothesis is:
u < 1300 KN/m^2.
Step-by-step explanation:
The null hypothesis describes hat there is no difference or assiciation between variables of a specific population or that it is a particular average value while the alternative hypothesis states otherwise.
In this case study, the null hypothesis is: u >= 1300 KN/m^2
And the alternative hypothesis is:
u < 1300 KN/m^2.
Currently patrons at the library speak at an average of 64 decibels. Will this average decline after the installation of a new computer plug in station? After the plug in station was built, the librarian randomly recorded 47 people speaking at the library. Their average decibel level was 63.2 and their standard deviation was 5. What can be concluded at the the α α = 0.05 level of significance?
Answers
Answer:
The conclusion is that the average level of decibel at the library has changed since the installation of a new computer plug
Step-by-step explanation:
From the question we are told that
The population mean is [tex]\mu = 64[/tex]
The sample size is [tex]n = 47[/tex]
The sample mean is [tex]\= x = 63.2[/tex]
The sample standard deviation is [tex]\sigma = 5[/tex]
The level of significance is [tex]\alpha = 0.05[/tex]
The Null Hypothesis is
[tex]H_o : \mu = 64[/tex]
The Alternative Hypothesis is
[tex]H_a : \mu \ne 64[/tex]
The test statistics is mathematically evaluated as
[tex]t = \frac{\= x - \mu }{\frac{\sigma }{\sqrt{n} } }[/tex]
substituting values
[tex]t = \frac{63.1 - 64 }{\frac{5 }{\sqrt{47} } }[/tex]
[tex]t = -1.234[/tex]
The negative sign show that this is a left-tail test
Now the critical value of the level of significance obtained from the critical values table is
[tex]z_{0.05} = 1.645[/tex]
Now comparing the critical value of the [tex]\alpha[/tex] and the test statistics we see that critical value is greater than the test statistic which implies that the null hypothesis is rejected.
The conclusion is that the average level of decibel at the library has changed since the installation of a new computer plug
Researchers often enter a lot of data into statistical software programs. The probability of making zero to two errors per 1,000 keystrokes is 0.41, and the probability of making three to five errors per 1,000 keystrokes is 0.22. Find the probabilities (per 1,000 keystrokes) associated with each of the following.(a) at most two errors(b) at least three errors(c) at most five errors(d) more than five errors
Answers
Answer:
(a) P(0≤x≤2) = 0.41
(b) P(x≥3) = 0.59
(c) P(x≤5) = 0.63
(d) P(x≥6) = 0.37
Step-by-step explanation:
(a) The probability to have at most two errors is the probability to have 0, 1 or 2 errors or the probability of making zero to two errors. So, the probability to have at most two error is:
P(0≤x≤2) = 0.41
(b) The probability to have at least three errors is the probability to have 3 or more errors. So, it can be calculated as:
P(x≥3) = 1 - P(x≤2)
P(x≥3) = 1 - 0.41
P(x≥3) = 0.59
(c) The probability to have at most five error is the probability to have 0, 1, 2, 3, 4 or 5 errors. This can be calculated as the sum of the probability to have zero to two errors and the probability to have three to five errors as:
P(x≤5) = P(0≤x≤2) + P(3≤x≤5)
P(x≤5) = 0.41 + 0.22
P(x≤5) = 0.63
(d) The probability to have more than five errors is the probability to have 6 or more errors. So, it can be calculated as:
P(x≥6) = 1 - P(x≤5)
P(x≥6) = 1 - 0.63
P(x≥6) = 0.37
What is the slope of the line?
Answers
Answer:
-2
this eq. can be simplified to -
y = 5 - 2x
we know that the coefficient of x is the slope
therefore , -2 is the slope
Answer:
A. -2
Step-by-step explanation:
Arrange to y-intercept form:
-4x + 7 = 2y - 3
7 = 4x + 2y - 3
7 + 3 = 4x + 2y
10 = 4x + 2y
10 - 2y = 4x
-2y = 4x - 10
y = -2x + 5
As you can see, -2 is the slope of the equation.
20% of city employees ride the bus to work. This is up 10% from last year. What percent of employees rode the bus to work last year?
Answers
Answer:
18.18% of employees rode the bus to work last year
Step-by-step explanation:
This question can be solved using a rule of three.
Last year, a proportion of x employees riding the bus was 100% = 1.
This year, 20% = 0.2 ride the bus, which is 100 + 10 = 110% = 1.1 of last year.
So
0.2 - 1.1
x - 1
[tex]1.1x = 0.2[/tex]
[tex]x = \frac{0.2}{1.1}[/tex]
[tex]x = 0.1818[/tex]
0.1818*100 = 18.18%
18.18% of employees rode the bus to work last year
Which of the following statements about the backward elimination procedure is false? a. It does not permit an independent variable to be reentered once it has been removed. b. It is a one-variable-at-a-time procedure. c. It does not guarantee that the best regression model will be found. d. It begins with the regression model found using the forward selection procedure.
Answers
Answer:
c. It does not guarantee that the best regression model will be found.
Step-by-step explanation:
Backward elimination (or deletion) procedure requires a subsequent removal of individual independent variables in an equation to derive an appropriate regression equation. It is a step-wise operation which make use of a predefined criterion for essential variables.
One of its main importance is that it ensure that the best regression model is found by removal of inconsequential variables.
Therefore, the appropriate answer to the given question is option C.
Answer:
c. It does not guarantee that the best regression model will be found.
Step-by-step explanation:
Let x=−1−5i and y=5−i. Find x⋅y.
Answers
Answer:
-10 -24i
Step-by-step explanation:
Note : i=√-1 (imaginary number)
i² = -1
xy
= (−1−5i)(5−i)
= -5 +i -25i +5i²
=-5 +i -25i + 5(-1)
= -5 +i -25i -5
= -5 -5 +i -25i
= -10 -24i
A complex number is a number system that extends the real numbers with a particular element labelled "i" known as the imaginary unit. The value of x·y is (−10 −24i).
What is a complex number?A complex number is a number system that extends the real numbers with a particular element labelled "i" known as the imaginary unit, and satisfies the equation i² = -1; every complex number may be represented as a + bi, where a and b are real numbers.
Given that x=−1−5i and y=5−i. Therefore, the value of x·y is,
x·y = (−1 −5i)(5-i)
= −5 + i −25i +5i²
= −5 −24i − 5
= −10 −24i
Hence, the value of x·y is (−10 −24i).
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9000 to nearest thousand
Answers
Answer:
9,000 is the answer
Step-by-step explanation:
Answer:
9000
Step-by-step explanation:
An election ballot asks voters to select six city commissioners from a group of 24 candidates in how many ways can this be done? Six city commissioners can be selected from a group of 24 candidates in blank different ways
Answers
Answer:
134,596 diffrent ways.
Step-by-step explanation:
Combination has to do with selection. When n object is to be selected from n objects, this can be achieved using the combination formula as shown; \
nCr = n!/(n-r)!r!
If an election ballot asks voters to select six city commissioners from a group of 24 candidates, then the selection can be done in 24C6 different ways.
Applying the formula above:
24C6 = 24!/(24-6)!6!
24C6 = 24!/18!6!
24C6 = 24*23*22*21*20*19*18!/18!*6*5*4*3*2
24C6 = 24*23*22*21*20*19/24*30
24C6 = 23*22*21*20*19/30
24C6 = 134,596 different ways.
Hence, Six city commissioners can be selected from a group of 24 candidates in 134,596 different ways
carlos hiked 1 3/4 miles along a nature trail to a fork in the trail. he then hiked 2 1/2 miles along a path that led to a waterfall. how much longer is the trail from the fork to the waterfall than the first part of the trail. Someone plz help
Answers
Answer:
3/4 miles longer
Step-by-step explanation:
its 1 3/4 the other is only 1. so answer is 3/4
a dense fog advisory means visibility is less than 1/8 of a mile
-true
-false
Answers
Good luck
Each side of a square is increasing at a rate of 3 cm/s. At what rate is the area of the square increasing when the area of the square is 36 cm2?
Answers
Each side of the square would have to be 6 cm to have an area of 36 cm^2. However, as a side can never be 0, and you never gave a starting size for the square, the question is unanswerable.
What numbers can you make with 1, 2, 3, and 4? Using the operations of addition, subtraction, and multiplication, we can make many different numbers. You can use parentheses as many times as you like and each of the numbers 1, 2, 3, and 4 can be used at most once.
Answers
Answer:
-23 to 28 and 30, 32, 36
Step-by-step explanation:
These numbers can be made:
{-23, -22, -21, -20, -19, -18, -17, -16, -15, -14, -13, -12, -11, -10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 30, 32, 36}
For example,
36 = (1+2)(3)(4)-23 = 1 -(2)(3)(4)There is a bag with 50 popsicles inside. 5
are red, 15 are orange, 12 are blue, 8 are
yellow and 10 are purple. If you were to
grab one popsicle from the bag, what is
the probability that it is red or not orange?
P(red or not orange)
Answers
Answer: [tex]\frac{6}{25}[/tex]
In this case, we're asked to pick one of 12 blue popsicles out of a bag of 50 – from this, we can just write that the probability of picking a blue popsicle is 12/50. Simplifying this, we can divide both the numerator and denominator by 2 to get our final answer of [tex]\frac{6}{25}[/tex]
Hope this helped you!
Step-by-step explanation:
PLEASE ANSWER ASAP! please
Answers
Answer:
3 ÷ 0.5
Step-by-step explanation:
Since each large square is 1 whole, and theirs five out of 10 columns that are distinctivly a different orange, it'd be 3 divided by 0.5.
HELP PLEASE!!What method can you use to find the area of the composite figure. Check ALL that apply.
Answers
Answer:
C
Step-by-step explanation:
The reason we can use this method is because we are given a composite figure with a house shape with one triangle on top. We can use the guidance of the dotted lines to make out that a rectangle can be used to find the figure. We can see that apart from the figure, there are two congruent triangles. To find the area we would do -
First find the missing height of the smaller triangles. We would use the pythagorean theorem to find that the missing height is√5
We could do 8(4) = 32 to find the area of the rectangle.
Then, we could do 2√5/2 to find one missing triangle. We could then add the triangles to find the measures of the combined triangles as 2√5. Then, we could do 32 - 2√5 to find the area as 27.5.
Hope this helps :)
Answer:
it is A,B,D
Step-by-step explanation:
i got it right on edge
A rectangular solid with a square base has a volume of 5832 cubic inches. (Let x represent the length of the sides of the square base and let y represent the height.)
(a) Determine the dimensions that yield the minimum surface area.
(b) Find the minimum surface area.
Answers
Answer:
a) 18 in x 18 in x 18 in
b) [tex]S = 1944\ in2[/tex]
Step-by-step explanation:
a) Let's call 's' the side of the square base and 'h' the height of the solid.
The surface area is given by the equation:
[tex]S = 2s^2 + 4sh[/tex]
The volume of the solid is given by the equation:
[tex]V = s^2h = 5832[/tex]
From the volume equation, we have that:
[tex]h = 5832/s^2[/tex]
Then, using this value of h in the surface area equation, we have:
[tex]S = 2s^2 + 4s(5832/s^2)[/tex]
[tex]S = 2s^2 + 23328/s[/tex]
To find the side length that gives the minimum surface area, we can find where the derivative of S in relation to s is zero:
[tex]dS/ds = 4s - 23328/s^2 = 0[/tex]
[tex]4s = 23328/s^2[/tex]
[tex]4s^3 = 23328[/tex]
[tex]s^3 = 23328/4 = 5832[/tex]
[tex]s = 18\ inches[/tex]
The height of the solid is:
[tex]h = 5832/(18)^2 = 18\ inches[/tex]
b) The minimum surface area is:
[tex]S = 2(18)^2 + 4(18)(18)[/tex]
[tex]S = 1944\ in2[/tex]
In a Classroom, 1/6 of the students are wearing blue shirts, and 2/3 are wearing white shirts. There are 12 students in the classroom. How many students are wearing shirt other than blue shirts or white shirts?
Answers
Answer:
2
Step-by-step explanation:
firstly...you have to find the number of students wearing blue and white shirt and subtract from the total number of students to get the number if students that neither wears blue or white shirt as follows :
no wearing blue = 1/6 × 12 = 2
no.wearing white = 2/3 × 12 = 8
total number wearing blue and white = 8+2 =10
number of students not putting on either of the two colours include...= 12-10 = 2
.....
.....
.....
MARK BRAINLIEST will be appreciated please...thanks in advance
How do you write 26,300 in scientific notation? ____× 10^____
Answers
Answer:
It's written as
[tex]2.63 \times {10}^{4} [/tex]
Hope this helps you
Answer:
2.63 * 10 ^4
Step-by-step explanation:
26,300
We want one digit to the left of the decimal
Move the decimal 4 places to the left
4 is the exponent. Since we moved the decimal to the left, the exponent is positive
2.63 * 10 ^4
Please answer this correctly
Answers
Answer:
Option 1
Step-by-step explanation:
The temperature was -11 degrees Fahrenheit in Chicago. In Cheyenne, it was 11 degrees Fahrenheit warmer than Chicago's temperature.
-11 + 11 = 0
Which of the following is an even function? (A) g(x)=5x+2 (B) g(x)=x (C) g(x)= x 2 (D) g(x)=x3 (E) g(x)=−|x|
Answers
Answer:
(C) g(x) = x² and (E) g(x) = -|x|Step-by-step explanation:
If f(x) is an even function, then f(-x) = f(x).
(A)
g(x) = 5x + 2
g(-x) = 5(-x) + 2 = -5x + 2
g(-x) ≠ g(x)
(B)
g(x) = g(x) = x
g(-x) = -x
g(-x) ≠ g(x)
(C)
g(x) = x²
g(-x) = (-x)² = (-1x)² = (-1)²(x)² = x²
g(-x) = g(x)
(D)
g(x) = x³
g(-x) = (-x)³ = (-1x)³ = (-1)³(x)³ = -1x³ = -x³
g(-x) ≠ g(x)
(E)
g(x) = -|x|
g(-x) = -|-x| = -|-1x| = -(|-1|)(|x|) = -1|x| = -|x|
g(-x) = g(x)
What is the next term of the arithmetic sequence 24, 16, 8, 0,
Answers
Answer:
-8
Step-by-step explanation:
The term-to-term rule is -8.
16 - 24= -8
8 - 16 = -8
0 - 8 = -8
The arithmetic sequence is a concept of algebra and in given sequence 24, 16, 8, 0 the next term is, -8
What is an arithmetic sequence?In the arithmetic sequence the common difference remains constant between any two consecutive terms. In this sequence we can get the next term by adding one fixed value which is known as a common difference. It is also known as arithmetic progression(AP).
Formula for any [tex]n^{th}[/tex] term in AP,
T = a + (n-1)d
d = T₂-T₁
Where, a is first term , n is [tex]n^{th}[/tex] term and d is common difference
Given sequence,
24, 16, 8, 0
a = 24
n = 5
d = 16-24 = -8
T₅ = 24 +( (5-1)×(-8))
T₅ = -8
Hence, [tex]5^{th}[/tex] term of sequence is -8
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How to solve the exponential equation for 3^k2 • 3^-k+2 = 81
Answers
Answer:
k=2
Step-by-step explanation:
3^k*2 * 3^-k+2 = 81
Factor out 81 to be : 3^4
Rewrite the equation:
k*2 - k+2 = 4
k^2 - 2k = 4
Simplify : k+2 = 4
- 2 - 2
k = 2
help help help pls pls
Answers
Answer:
C. {2.4, 4.8, 6.3, 8.8}
Step-by-step explanation:
You only need to find the first domain value to make the appropriate answer selection.
14.1 = 7x -2.7
16.8 = 7x . . . . . . add 2.7
2.4 = x . . . . . . . . divide by 7
The appropriate choice is ...
C. {2.4, 4.8, 6.3, 8.8}
_____
In the attachment, we have applied the same "solve for x" steps to each of the range values, confirming our answer choice.
The area of a gymnasium floor is 264 square yards. the floor is 11 yards wide. How long is the floor?
Answers
Answer:
24 yards long
Step-by-step explanation:
if A=l*w then it's 264=l*11
if you divide 264 (area) by 11 (width) then the answer is 24 which is the length
5. Look at the diagram below. Indicate whether the angles below are
adjacent or vertical.
a <1 and <2
b. <3 and <4
C. <2 and <4
d. <1 and <3
Answers
Answer:
a. adjacent
b. adjacent
c. vertical
d. vertical
Step-by-step explanation:
Adjacent angles share a side; vertical angles do not. Vertical angles share a vertex and have sides that are opposite rays.
In the diagram, adjacent angles are sequentially numbered, so numbers that differ by 1 (or 3) are adjacent angles.
Vertical angles are not adjacent, so will have angle numbers that differ by 2.
adjacent: (a) and (b) . . . angles 1&2, 3&4
vertical: (c) and (d) . . . angles 2&4, 1&3
when should homeowners ask their lenders for mortgage modification
Answers
Homeowners may consider asking their lenders for mortgage modification in the following situations listed below:
When should homeowners ask their lenders for mortgage modification?1. Financial hardship: If a homeowner is facing financial hardship as a result of a large decrease in income, unanticipated medical expenditures, or other unforeseen events
2. Changes in interest rates: If interest rates have fallen significantly after the homeowner obtained their mortgage, they may be able to negotiate a lower interest rate through mortgage modification.
3. Default: If a homeowner has fallen behind on their mortgage payments and is facing foreclosure, mortgage modification may be an option for bringing the loan up to date and avoiding foreclosure.
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Answer:
When they know they can't afford it & before the next payment
Step-by-step explanation: