Answers
The determinant is C. -541.
Using a cofactor expansion along the first row:
[tex]\begin{vmatrix}-8&-4&-1\\1&7&-3\\8&9&9\end{vmatrix} = -8\begin{vmatrix}7&-3\\9&9\end{vmatrix} + 4\begin{vmatrix}1&-3\\8&9\end{vmatrix} - \begin{vmatrix}1&7\\8&9\end{vmatrix} \\\\= -8(7\times9-(-3)\times9) + 4(1\times9-(-3)\times8) - (1\times9-7\times8) \\\\ = -8(63+27) + 4(9+24) - (9-56)\\\\= \boxed{-541}[/tex]
Related Questions
Order the following numbers from smallest to largest?
25, 10, -15, 0, -5
-5, -15, 0, 10, 25
0, -5, 10, -15, 25
-15, -5, 0, 10, 25
0, -5, -15, 10, 25
Answers
Hope this helps :)
Answer:
-15,-5,0,10,25
Step-by-step explanation:
x^5+x-1
x^5+x-1
x^5+x-1
Answers
Step-by-step explanation:
x⁵+x-1
(2x-x+1) ( x³+x²-1 )
Simplify the following expression: 5x + 8 + 9x^2 − 7x − 6
Answers
Answer:
9x^2-2x+2
Step-by-step explanation:
5x + 8 + 9x^2 − 7x − 6
Combine like terms
9x^2+5x-7x+8-6
9x^2-2x+2
Answer:
Step-by-step explanation:
5x + 8 + 9x^2 - 7x - 6
= 9x^2 - 2x + 2.
Which graph represents 3x-5y>10
Answers
Answer:
Step-by-step explanation:
here is a pattern made from sticks
Answers
Answer:
Where I can't see the pattern made from sticks?
what is the meaning of EMI calculation
Answers
What Is an Equated Monthly Installment (EMI)?
An equated monthly installment (EMI) is a fixed payment amount made by a borrower to a lender at a specified date each calendar month. Equated monthly installments are applied to both interest and principal each month so that over a specified number of years, the loan is paid off in full. In the most common types of loans—such as real estate mortgages, auto loans, and student loans—the borrower makes fixed periodic payments to the lender over the course of several years with the goal of retiring the loan.
Answer:
equated monthly installment
An equated monthly installment (EMI) is a fixed payment amount made by a borrower to a lender at a specified date each calendar month. Equated monthly installments are applied to both interest and principal each month so that over a specified number of years, the loan is paid off in full.
Step-by-step explanation:
An equated monthly installment (EMI) is a fixed payment amount made by a borrower to a lender at a specified date each calendar month. Equated monthly installments are applied to both interest and principal each month so that over a specified number of years, the loan is paid off in full. In the most common types of loans—such as real estate mortgages, auto loans, and student loans—the borrower makes fixed periodic payments to the lender over the course of several years with the goal of retiring the loan.
A shopkeeper selling an article at a discount of 25% looses Rs.125.If he allows 10% discount he gains Rs 250.Find the marked price and the costprice of the article. ..............(Plz send the ans clearly if you send the ans clearly I will mark you as a brainliest)
Answers
Answer:
i dont know
but try you will get the answer
What is the area of Triangle PQR on the grid?
A triangle PQR is shown on a grid. The vertex P is on ordered pair 7 and 6, vertex Q is on ordered pair 1 and 6, and the vertex R is on ordered pair 4 and 2.
5 square units
6 square units
10 square units
12 square units
Answers
Answer: D) 12 square units
Explanation:
The base is QP = 6 units long.
The height is always perpendicular to the base, and the height is 4 units.
area = 0.5*base*height
area = 0.5*6*4
area = 3*4
area = 12 square units
Answer:
12
Step-by-step explanation:
What is the quotient of 2 2/7 divided by 4/7
Answers
The answer is 4.
Solution:
2 2/7 ÷ 4/7
Transform to improper fraction,
So,
16/7 ÷ 4/7
16/7 × 7/4
4
A school library charges a fine of 5 cents on the first day a book is overdue, then doubles the amount owed each day until payment is made. Jada and Juan each had a book that was overdue. Juan returned his book on the 5th day it was overdue. Jada paid a fine that was $2.40 more than Juan’s fine.
Which statement about the overdue books is true?
Jada’s book was overdue by 1 more day than Juan’s book.
Jada’s book was overdue by 2 more days than Juan’s book.
Jada’s book was overdue by 24 more days than Juan’s book.
Jada’s book was overdue by 48 more days than Juan’s book.
Answers
Answer:
Jada's book was overdue by 1 more day than Juan's book.
...................
Answer:its A
Step-by-step explanation:
i took the quiz
Math models helpppp plss if you know about math models answer this pls
Answers
Answer:
A mathematical model is a description of a system using mathematical concepts and language. The process of developing a mathematical model is termed mathematical modeling. Mathematical models are used in the natural sciences and engineering disciplines, as well as in non-physical systems such as the social sciences.
Find the missing side. PLEASE HELP FAST !
Answers
Answer:
It is 28.5m. Hope this helps!! Have a good day..
help me solve this i dont kow how to do this i was absent in class when my teaacher taught this doont send video just answer
Answers
8:-
[tex]\\ \sf \longmapsto 5x+20=40[/tex]
[tex]\\ \sf \longmapsto 5x=40-20[/tex]
[tex]\\ \sf \longmapsto 5x=20[/tex]
[tex]\\ \sf \longmapsto x=\dfrac{20}{5}[/tex]
[tex]\\ \sf \longmapsto x=4[/tex]
9:-
As its a isosceles triangle
x=y[tex]\\ \sf \longmapsto x+y+60=180[/tex]
[tex]\\ \sf \longmapsto 2x+60=180[/tex]
[tex]\\ \sf \longmapsto 2x=120[/tex]
[tex]\\ \sf \longmapsto x=y=60[/tex]
and[tex]\\ \sf \longmapsto z=x+60÷60+60=120[/tex]
Write the Roman numeral CLXXIX in standard form.
Answers
179 is the answer
hope it helps
Answer:
179 = CLXXIX = 100 + 50 + 10 + 10 + 10 − 1
Step-by-step explanation:
Numbers close to CLXXIX
Below are the numbers CLXXVI through CLXXXII, which are close to CLXXIX. The right column shows how each roman numeral adds up to the total.
176 = CLXXVI = 100 + 50 + 10 + 10 + 5 + 1
177 = CLXXVII = 100 + 50 + 10 + 10 + 5 + 1 + 1
178 = CLXXVIII = 100 + 50 + 10 + 10 + 5 + 1 + 1 + 1
179 = CLXXIX = 100 + 50 + 10 + 10 + 10 − 1
180 = CLXXX = 100 + 50 + 10 + 10 + 10
181 = CLXXXI = 100 + 50 + 10 + 10 + 10 + 1
182 = CLXXXII = 100 + 50 + 10 + 10 + 10 + 1 + 1
Symbol Value
I 1
V 5
X 10
L 50
C 100
D 500
M 1000
I hope this helps.
Which of the following expressions shows how to rewrite 8 − 9 using the additive inverse and displays the expression correctly on a number line?
A number line from negative 10 to positive 10 is shown, with numbers labeled at intervals of 1. An arrow is shown from point 0 to 8. Another arrow points from 8 to negative 1.
A number line from negative 10 to positive 10 is shown, with numbers labeled at intervals of 1. An arrow is shown from point 0 to 8. Another arrow points from 8 to 9.
A number line from negative 10 to positive 10 is shown, with numbers labeled at intervals of 1. An arrow is shown from point 0 to 8. Another arrow points from 8 to negative 9.
A number line from negative 10 to positive 10 is shown, with numbers labeled at intervals of 1. An arrow is shown from point 0 to 8. Another arrow points from 8 to 1.
Answers
Answer:
A,B,C
explanation:
i got it right on edge
Find the solution set of the inequality. -25 > -5(x + 2.5
Answers
Answer:
-25 > -5(x+2.5)
-25 > -5x -12.5
x > 5/2
please click thanks and mark brainliest if you like :)
Answer:
x < 2.5
Step-by-step explanation:
-25>-5(x-12.5)
-25 > -5x -12.5
add 12.5 to both sides
-25+12.5 > -5x -12.5+12.5
-12.5> -5x
divide both sides by -5
(-12.5/-5)> -5x/-5
x>2.5
since we divided by a negative,the inequality sign will flip over
x<2.5
Translate the following phrase into an algebraic expression. use the variable n to represent the number. 4 less than triple a number
Answers
Work Shown:
n = a number, aka a placeholder for a number
3n = triple a number
3n-4 = four less than triple a number
So whatever n is, we multiply by 3 and then subtract off 4.
As an example, if n = 12, then 3n-4 = 3*12-4 = 36-4 = 32.
FIND THE AREA OF THE SHADED REGION.
Answers
This problem can be a bit confusing, so let's break it down:
First, let's take the area of the square (A = b · h):
A = 15 · 15
A = 225 cm²
Now comes the confusing part:
We can tell that the non-shaded area is 1/4 of a circle, so, if we take 1/4 of the area of a circle, we can subtract its area from the area of the square:
A = πr²
A = 15²π
A = 225π
1/4 A = 225π / 4
New Area = 56.25π
Or... about 176.7
Since we have both of the areas, all we have to do is subtract:
225 - 176.7 =
48.3.
Your final answer is 48.3 cm²
1. Mrs. Jones picks 3 flowers a day starting on Monday. How many does she have by Sunday?
2. 603 cats have 4 kittens each. How many kittens are there in total?
Answers
Answer:
1. 18
2. 2412
Step-by-step explanation:
1. Monday 3
Tuesday 6
Wensday 9
Thursday 12
Friday 15
Sunday 18
_____________________________________________________
2.
603*4=2412
If a muffin costs 7¢, how much will 3 muffins cost?
Answers
Answer:
21 cents
Step-by-step explanation:
Take the cost per muffin and multiply by the number of muffins
7 cents * 3 muffins
21 cents
gayle started with 30 pairs of shoes and donated X pairs. Her sister Bonnie started with 22 pairs of shoes and donated half as many pairs as Gayle did. How many pairs of shoes did Gayle donate if they had the same number of shoes remaining
Answers
Answer:
16 pair of shoes
Step-by-step explanation:
If Gayle donated x pairs, it means he is left with 30 - x pair of shoes.
Bonnie donated half as many as Gayle as donated.
We know Gayle donated x pairs, so Bonnie must have donated x/2.
Bonnie is left with 22 - (x/2) pairs after donation.
The question says, after donation they have the same number of pair of shoes.
It means, 30 - x = 22-(x/2),
If you will manipulate this equation and make x the subject,
you will get x=16.
I hope it helps.
Gayle donated 16 shoes
Number of shoes Gayle has after the equation can be represented with this equation : 30 - x
Where x = number of shoes she donated
Number of shoes Bonnie donated = 0.5x
Number of shoes Bonnie has after the equation can be represented with this equation : 22 - 0.5x
If Bonnie and Gayle ended with the same amount of shoes after the donation, this can be represented as:
30 - x = 22 - 0.5x
Combine similar terms
30 - 22 = x - 0.5x
8 = 0.5x
Divide both sides of the equation by 0.5
x = 16
A similar question was solved here: https://brainly.com/question/21378262?referrer=searchResults
Find the error in the solution, and then solve it correctly.
7x + 12 + 3x = 8
7x + 12 = 5
7x = -7
x= -7/7
Answers
We could find the error first, but if we solve the equation, we can compare our answers to find the error. So,
7x + 12 + 3x = 8
10x + 12 = 8
10x = -4
x = -4/10
x = -2/5.
When we compare the two, we see that our second line is vastly different, and we can easily isolate the mistake, finding that it occurs when they disregard the variable in the 3x term and subtract 8 by 3 rather than combining the terms 3x and 7x together.
Answer:
x=-4/10 = -2/5
Step-by-step explanation:
7x+12+3x=8
(7x+3x) =8-12
10x=-4
x=-4/10
x= -2/5
Which is the graph of y = [x]-2?
Please please helped timed 20points
Answers
Answer:
3rd graph
Step-by-step explanation:
what is the volume of a cube if each side is 11 cm
Answers
The volume of a cube is side^3
Volume = 11^3
Volume = 1,331 cm^3
Answer:
V =1331 cm^3
Step-by-step explanation:
The volume of a cube is
V = s^3 where s is the side length
V = 11^3
V =1331 cm^3
please help me Find the volume of this shape.
Answers
Answer:
240 m^3
Step-by-step explanation:
It's a cuboid with a volume=l*b*h, where l, b, h are the dimensions of the shape.
Volume=5*12*4=240 m^3
Answer:
V =240 m^3
Step-by-step explanation:
The volume is given by
V = l*w*h where l is length w is width and h is height
V = 12*4*5
V =240 m^3
Graph the relation shown in the table. Is the relation a function? Why or why not? PLEASE HELP THANKYOU
Answers
Answer:
Yes, no verticle line passes through two graphed points
Step-by-step explanation:
A function is when 1 input only has 1 output. None of the inputs have different outputs. So, this is a function.
what does range mean in maths
Answers
Hope this helps
Help me solve seven pls pls
Answers
Answer:
B. 20
Step-by-step explanation:
First, 20% of 20 is 4.
36 decreased by 4 (36-4) is 32.
The equation is N (160%)=32 or 1.6n=32
160% because it was already 100%, and its increased by 60% (100+60)
Divide both sides by 1.6.
You get n=20
I hope this helps!
llean works as a welder in web designer as a welder she earns $18 per hour last week she works x hours as a wlder and her Fran paid her $75 to design a webpage.write an expression to represent the total amount llean earned last week
Answers
I wasn’t able to find the multiplication sign on my keyboard and didn’t want to confuse you so I replaced x with times
The area of a rectangle is the product of its length and width. Both length and width are whole numbers. A rectangular poster has an area of 88 square inches. The width of the poster is greater than 10 inches and is prime.
Answers
Answer: a rectangular poster has an area of 260 square inches.the width of the poster is greater than 10 inches and is a prime number
Step-by-step explanation: a rectangular poster has an area of 260 square inches.the width of the poster is greater than 10 inches and is a prime number.what is the width
