Answer:
exactly one, 0's, triangular matrix, product and 1.
Step-by-step explanation:
So, let us first fill in the gap in the question below. Note that the capitalized words are the words to be filled in the gap and the ones in brackets too.
"An elementary ntimesn scaling matrix with k on the diagonal is the same as the ntimesn identity matrix with EXACTLY ONE of the (0's) replaced with some number k. This means it is TRIANGULAR MATRIX, and so its determinant is the PRODUCT of its diagonal entries. Thus, the determinant of an elementary scaling matrix with k on the diagonal is (1).
Here, one of the zeros in the identity matrix will surely be replaced by one. That is to say, the determinants = 1 × 1 × 1 => 1. Thus, it is a a triangular matrix.
Which goes with which
Solve for the variable 8x + 15 = 63
Answer:
6
Step-by-step explanation:
63-15 =48 48/8 is 6
Answer:
x = 6
Step-by-step explanation:
8x + 15 = 63
8x = 63 - 15
8x = 48
x = 48/8
x = 6
meg has 47 baby carrots are equally with 6 friends she puts an equal number of carrots on six plates how many carrots are left over
Answer:
5 carrots are left over.
Step-by-step explanation:
6 times 7 equals 42. 47 minus 42 is 5.
(2.5 x 10^9) + (5.3 x 10^8) = (2.5 + 5.3) x (10^9 x 10^8
= 7.8 x 10^7 describe and correct the error
Answer:
Read below.
Step-by-step explanation:
Wrong:
(2.5 x 10^9) + (5.3 x 10^8) =
(2.5 + 5.3) x (10^9 x 10^8) =
7.8 x 10^7=
7.8 x 10,000,000=
780,000,000
Bold is edited by me
Correct:
(2.5 x 10^9) + (5.3 x 10^8)=
(2.5 x 1,000,000,000)+(5.3 x 100,000,000)=
2,500,000,000+5,300,000,000=
7,800,000,000
The problem is that whoever wrote it swapped the numbers in the parentheses, added a pair of them together and multiplied the other pair. You are not supposed to take out the pairs and swap them if you'd like or the answer is incorrect. Second mistake is that [tex]10^{9} * 10^{8}[/tex] is not [tex]10^{7}[/tex] I do not know how and where you got that answer from.
If ∆ABC ~ ∆XYZ, m∠B = _____
A. m∠X.
B. m∠Y.
C. m∠Z.
Answer:
C.) m<Z
Step-by-step explanation:
Answer:
If ∆ABC ~ ∆XYZ, m∠B = m∠Z
Step-by-step explanation:
Lana's little sister needs to take a bubble bath. The package says to put in a drop of bubble bath for every half gallon of water in the bathtub. Lana doesn't know how many half-gallons there are, but she knows that their bathtub can hold 12 gallons of water. How many drops can she put into the bath for her sister? *
24 drops of bubble bath
Step-by-step explanation:
this is because the ratio is .5 gallon:1 drop, so 12 gallons would be 24 drops. I hope this helps!
For the inverse variation equation xy = k, what is the constant of variation, k, when x = 7 and y = 3?
Answer:
k=21
Step-by-step explanation:
x=7 X y=3 = 21
7 x 3 = 21
Answer:21
Step-by-step explanation:
xy=k
k=xy x=7 y=3
k=7 x 3
k=21
A camera crew on the ground is recording the act of a performer walking a tightrope stretched between two buildings. A member of the camera crew who is 1.8 m tall is almost directly below one end of the tightrope. When the performer steps out onto the other end of the tightrope, the angle of elevation is 75 . If the buildings are 30 m apart, how many meters above the ground is the performer?
Answer:
32332
Step-by-step explanation:
PLEASE HELP ME (20points)
Will Mark BRAINLIEST!
What’s the correct answer for this?
Answer:
B
Step-by-step explanation:
According to the theorem, equal sides have equal angles opposite to them so AB AND AC are equal so x and y are also equal
Which phrase represents this expression?
(47−17)×4
A. 4 times the difference of 47 and 17
B. 4 times the difference of 17 and 47
C. the difference of the product of 4 times 17 and 47
D. the difference of 47 and the product of 4 times 17
Answer:
I think its A
Step-by-step explanation:
There were 632 animals gathered at the river. A herd of 187 elephants and 266 zebras left the river area. How many animals were still at the river?
Answer:
179 animals were still at the river
Step-by-step explanation:
There were 632 animals at the river.
A herd of 187 elephants and 266 zebras left the river area.
This means that 187 + 266 = 453 animals left the river area.
Remaining:
632 - 453 = 179
179 animals were still at the river
Ameeta finished 12 math problems. David finished 3 times as many. How many more math problems did David finish than Ameeta?
Answer:
24
Step-by-step explanation:
Ameeta = 12 math problems.
David =12×3=36 math problems
So 36-12=24
Answer:
12
David's
3 times longer
comparison problem
Step-by-step explanation:
got right on edge
The complement of 20°17' is
Answer:69°43'
Step-by-step explanation:
Complementary angles add up to 90
Let them complement be y
y+20°17`=90°
Collect like terms
y=90-20°17' 20°17'=1217/60
y=90-1217/60
y=(60x90 -1 x 1217)/60
y=(5400-1217)/60
y=4183/60
y=69°43'
Nora wants to put new glass in her window
If her window measures 34 inches by 48 inch
What is the area of the glass that she will need
Answer:
1632 inches squared
Step-by-step explanation:
Hi!
So the formula for area is length times width.
So you would multiply the length by the width which is 34 times 48 to get the area which is 1632 in squared.
Hope this helps!
This area model shows 50 X 38 Which number is missing from the model
Answer:
69
Step-by-step explanation:
What is the estimated difference?
Round each number to the nearest thousand before finding the difference.
5,714,688 – 327,149
Pls help
Answer:
I think it is 5,388,000, but I m not sure
The following data on total body bone mineral content (TBBMC) (g) for a sample both during lactation (L) and in the post-weaning period (P). Subject 1 1928 2126 2 2549 2885 3 2825 2895 4 1924 1942 5 1628 1750 6 2175 2184 7 2114 2164 8 2621 2626 9 1843 2006 10 2541 2627 P
(a) Assuming that the normality assumption is satisfied, does the data suggest that true average total body bone mineral content during post-weaning exceeds that during lactation by more than 25g? State and test the appropriate hypotheses using a significance level of .05.
(b) Calculate an upper confidence bound using a 95% confidence level for the true average difference between TBBMC during post-weaning and during lactation.
Answer:
Check the explanation
Step-by-step explanation:
Kindly check the attached images below to see the step by step explanation to the question above.
help please 40 points answer correct please
Answer:
bballs: 8*2+2=18
baseballs: 5*8-4=36
softballs: 36/2+6=24
Step-by-step explanation:
easy Hope this helps!
a chef makes 1 1/2 gallons of soup in large pot. how many 1 cup servings can the chef get from this large pot of soup
Answer:
The answer is 24
Step-by-step explanation:
Each quart contains 4 cups of soup. So, one gallon of soup contains 16 cups of soup. Therefore, 1 1/2 gallons of soup contains 16+8 = 24 cups. Therefore, the chef can serve 1 1/2 gallons of soup as 24 one-cup servings.
I have been struggling on this can anyone help?
Answer:
Step-by-step explanation:
PX is 15 which is the radius
Find the circumference of the circle and subtract the length of the minor arc
Circumference of circle = 2 * pi * r = 2 * pi * 15 = 30 pi
length of arc = angle/360 * 2 * pi * r = 23/360 * 2 * pi * 15 = 1.92 pi
subtraction will give 30 pi - 1.92 pi = 28.08 pi
28.08 * 22/7 = 88.25 which is approximately 88
what is the image of the point -6 and 4 after a rotation of 180 degrees counterclockwise about the origin
Step-by-step explanation:
6 and -4
When plotting points on the coordinate plane below, which point would lie on the y-axis?
(0, 1)
(7, 0)
(6, 8)
(8, 2)
Answer:
(0,1)
Step-by-step explanation:
i got it right
What’s the correct answer for this?
Answer:
i think it's B
Step-by-step explanation:
hope this helps
Answer:
B
Step-by-step explanation:
A median cuts a triangle into half (2:1) so the triangle is divided into two equal parts.
Which of the following values of n will result in a true statement when substituted into the given equation? 4n + 9 = 1 A. n = -2 B. n = 2 C. n = 3 D. n = 4
Answer:
A. n = -2
Step-by-step explanation:
A. n = -2
4(-2) + 9 = 1
-8 + 9 = 1
1 = 1
The value of n for which the statement of equation 4n + 9 = 1 holds true is n = -2.
Given an equation:
4n + 9 = 1
There are some given options for the value of n.
It is required to find the value of n, where the statement is true.
A) When n = -2:
4n + 9 = 4(-2) + 9
= 1
B) When n = 2:
4n + 9 = 4(2) + 9
= 17
C) When n = 3:
4n + 9 = 4(3) + 9
= 21
D) When n = 4:
4n + 9 = 4(4) + 9
= 25
Hence the true statement is when n = -2.
Learn more about Equations here :
https://brainly.com/question/29657988
#SPJ2
What is the slope of the line that contains these points?x 15,17,19,21 y -10,2,14,26
Answer:
6
Step-by-step explanation:
The slope (m) can be found using the formula ...
m = (y2 -y1)/(x2 -x1)
Any pair of points will do. We can use the first two.
m = (2 -(-10))/(17 -15) = 12/2
m = 6
The slope of the line is 6.
Answer: 6
Step-by-step explanation:
One the first day of school, each student is given $0.50 to attend. On day two, each student earns $1.00, day 3, $2.00, etc. How much do students earn on the ninth day of school?
Answer:
They earn $256 on the ninth day of school.
Step-by-step explanation:
A geometric sequence(in which each term is the previous term multiplied by the ratio) has the following format:
[tex]a_{n+1} = r \times a_{n}[/tex]
In which r is the common ratio.
We can also find the nth term as a function of the first term, by the following equation:
[tex]a_{n} = a_{1} \times r^{n}[/tex]
In which
[tex]r = \frac{a_{n+1}}{a_{n}}[/tex]
In this question:
On the first day, $0.50. So [tex]a_{1} = 0.5[/tex].
Day two $1.00, day three $2.00.
So
[tex]r = \frac{1}{0.5} = \frac{2}{1} = 2[/tex]
Then
[tex]a_{n} = 0.5 \times 2^{n}[/tex]
How much do students earn on the ninth day of school?
[tex]a_{9} = 0.5 \times 2^{9} = 256[/tex]
They earn $256 on the ninth day of school.
Find the mean, median, and mode(s) of the data. 4, 6, 5, 4, 4, 5, 4, 8
Please Answer it Quickly :^)
Answer:
[see below]
Step-by-step explanation:
The Mean:Add all values together:
[tex]4+6+5+4+4+5+4+8 = 40[/tex]
There are 8 numbers in the data set.
40 ÷ 8 = 5
The mean of the data is 5.
The Median:Order the numbers in ascending order.
4, 4, 4, 4, 5, 5, 6, 8
There is no exact middle number.
[tex](4+5)/2 =4.5[/tex]
The median of the data is 4.5.
The Mode:'4' appears the most in the data set.
4, 4, 4, 4, 5, 5, 6, 8
The mode of the data is 4.
Write an equation that is parallel to the line y=3x-5 and passes through the point (-1,2)
Five friends bake ginger bread and subsequently meet up for a tasting session. Each one gives one of his ginger
breads to each other person. Then each person eats all of the ginger bread they were given. After that the
number of ginger breads halves. How many ginger breads did the five friends have to start with?
Answer:
The five friends had 10 fingers to start with; one had two each
Step-by-step explanation:
The statement says each gave one of not all of his ginger in the toasting session.
