Answers
See Explanation
Step-by-step explanation:
[tex] \begin{bmatrix} 1 & 2 \\ 3 & 4 \end{bmatrix} \\ \\ = 4 \times 1 - 3 \times 2 \\ \\ = 4 - 6 \\ \\ = - 2[/tex]
[tex] \begin{bmatrix} 4 & 2 & 6 \\ - 1 & - 4 & 5\\ 3 & 7 & 2 \end{bmatrix} \\ \\
=4(-4\times 2-5\times 7)\\ -2(-1\times 2-5\times 3)\\ +6(-1\times 7-(-4)\times 3)\\\\
= 4(-8-35) -2(-2-15) \\+6(-7+12)\\\\
= 4(-43) -2(-17) +6(5)\\\\
= - 172 + 34 + 30\\\\
= 64 - 172\\\\
= - 108 \\[/tex]
Related Questions
Line j passes through points (10, 10) and (1, 3). Line k is parallel to line j. What is the slope of line k?
Answers
Answer:
= (10-3) ÷ (10-1) = 7 ÷9 = 7/9
Step-by-step explanation:
As they are parallel, their slopes are the same. So if we find slope of line j we find slope of line k when we have two points of one line like (x1 , y1) and (x2 , y2) the slope of that line is (y2-y1) ÷ (x2-x1)
Help Geometry Math I don't know pls help
Answers
When looking at this image, please answer all 3 parts (a,b,c).
Write down the letter of the symbols have Reflectional symmetry.
Write down the letter of the symbols have symmetry by Translation.
Write down the letter of the symbols have Rotational symmetry.
Answers
Answer:
see below
Step-by-step explanation:
1. letter of the symbols have Reflectional symmetry.
A, B, C, G, I, L
2. letter of the symbols have symmetry by Translation.
A, B, C, D, E, F, G, H, I, J, K, L
3. letter of the symbols have Rotational symmetry.
C, D, L
draw diagnose AC and BD on parallelogram ABCD. Make a point where the diagonals intersect, and label it E. Measure and record the lengths of the four line segments you just create
Answers
Answer:
AE = 2.5
BE = 1.5
CE = 2.5
DE = 1.5
Step-by-step explanation:
it's plato's answer
Answer:
AE = 2.5
BE = 1.5
CE = 2.5
DE = 1.5
Step-by-step explanation:
plato
127 39 + 2Y = 4 for y = 3.
Answers
Answer:
use calculator soup. com
Step-by-step explanation:
this will help u
n − 9/4= 2n − 7/9 please add work
Answers
Answer:
- 1 17/36
Step-by-step explanation:
Step 1:
n - 9/4 = 2n - 7/9 Equation
Step 2:
- 9/4 = n - 7/9 Subtract n on both sides
Step 3:
- 81/36 = n - 28/36 Find common denominator
Step 4:
- 53/36 = n Add 28/36 on both sides
Answer:
n = - 1 17/36 Convert
Hope This Helps :)
Answer:
n= -53/36
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
n+ −9/4 = 2n+ −7/9
Step 2: Subtract 2n from both sides.
n+ -9/4 −2n=2n+ −7/9−2n−n+ −9/4 = −7/9
Step 3: Add 9/4 to both sides.
−n+ −9/4+9/4=−7/9+9/4 −n=53/36
Step 4: Divide both sides by -1.
−n/-1=53/36/−1n=−53/36
help pleasee im not smart
|-13| = ?
Answers
Explanation: Those lines mean absolute value and it's the numbers's distance from 0 so -13 will be 13, all negative numbers turn positive if its in between those numbers and positive numbers do nothing.
order 0.0509km , 60.5 m and 5700cm
Answers
Answer: 0.0509km 60.5m 5700cm
Greatest to least
Step-by-step explanation:
PLEASE ANSWER QUICKLY what is the ratio of cats to fish?
Answers
Answer:
1:3
Step-by-step explanation:
Divide both of them by 3
The area of a square is 49 units.What is the perimeter of the square?
Answers
Answer:
28
Step-by-step explanation:
If an area of a square is 49 units that means the length and the width are 7 units. Since a square has 4 sides that means 7*4=28. So there are 28 units.
It’s due today so I’d like some help please
Answers
Answer:
The answer is E since you'll be adding 3.844 to each other and the terms as well. But the answer is E again
Answer:
E. 7.688 × 10^8
please can you help
i need it badly
Answers
Answer:
8
Step-by-step explanation:
Factors of 32: 1, 2, 4, 8, 16, 32Factors of 48: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48Factors of 72: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72The greatest factor listed in all three is 8. Therefore, 8 is the GCF (greatest common factor) of 32, 48, and 72.I hope this helps!
Answer:
8 would be your answer
Choose the correct solution in roster form.
1. S is the set of prime numbers that are less than 15
A.{2,3,5,7,11,13}
B.{2,3,5,7,9,11,13}
C.{1,3,5,7,9,11,13}
D.{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15}
2.write the solution to the inequality in set-builder notation.
9t-4>32
A.{t| t>4}
B.{t| t>6}
C.{t| t>28}
D.{t| t>36}
Answers
Answer:
1)A.{2,3,5,7,11,13}
2) A.{t| t>4}
Step-by-step explanation:
Choose the correct solution in roster form.
1. S is the set of prime numbers that are less than 15
The Definition of a prime number is given as follows:
A prime number can be defined as the number number that can only be divisible of divided by 1 and itself
Hence the list of prime number below 15 is given as:
2, 3, 5, 7, 11 and 13
Hence, option A.{2,3,5,7,11,13} is correct
2. Write the solution to the inequality in set-builder notation.
9t-4>32
Solving for the given inequality
9t > 32 + 4
9t > 36
t >36/9
t > 4
Therefore, the solution to the inequality in set-builder notation is:
Option A.{t| t>4}
if you know the CORRECT ANSWER please help me out
Answers
Answer:
C
Step-by-step explanation:
Answer: a
Step-by-step explanation:
Timed Test!!
n + 8 = -9
Answers
hope this helps :)))
Answer:
n = -17
Step-by-step explanation:
Original Equation:
n + 8 = -9
Subtract 8 from both sides.
-9 - 8
-9 + (-8)
n = -17
Hope this helped :)
Two car rental companies charge an initial rental fee plus a fee per day. The table shows the total costs of renting a car for x days from
Discount Car Rentals. The total costy (in dollars) of renting a car for x days from Pay Less Rentals is represented by the equation
y=25x + 170. Which rental company charges less per day? How many days must you rent a car for the total costs to be the same?
Answers
Answer:
Step-by-step explanation:
Two car rental companies charge an initial rental fee and a fee per day.
Total cost for the company A is given by the equation,
y = 25x + 170
Car A charges $25 per day. [Slope of the line]
Another car rental company B charges as per table attached.
Per day car rental for the company B = [tex]\frac{270-180}{4-2}[/tex]
= [tex]\frac{90}{2}[/tex]
= $45 per day
Therefore, per day rental charged by company A is less.
Let the equation for the car rental by company A is,
y = mx + b
where m = per day rental charged by company A = $21.5
y = 45x + b
One point (2, 180) from the table lies on the equation.
Therefore, 180 = 45(2) + b
b = 180 - 90
b = 90
So the equation will be,
y = 45x + 90
If both the company charge the same after x day of rental,
45x + 90 = 25x + 170
45x - 25x = 170 - 90
20x = 80
x = 4
After 4 days car rentals for both the companies will be same.
14. On March 1 Tessa Obee deposited her IRS refund check for $9,364.85 in a savings account at State Bank. The account pays 4 percent interest calculated on a daily basis. Five days later on March 6 she withdrew $1,000.00. On March 18, 12 days later, she withdrew $2,000.00. On March 28, 10 days later, she withdrew another $2,000.00. Three days later on March 31 interest was computed. How much simple interest did her money earn?
Answers
Answer:
Her money earned a simple interest of $24.55.
Step-by-step explanation:
Since Tessa deposited $9364.85 and she gets 4% interest on daily basis, then before she withdraws $1000 after 5 days, she must've gotten an interest of:
9364.85 x 4% × (5/365) ≈ 5.13
After withdrawing $1000, she has $8364.85. If this remains in the account for 12days, as we have in the question, then the interest on that will be:
8364.85 x 4% × (12/365) ≈ 11.00
After withdrawing $2000, she has $6364.85. If this remains for 10days, her interest would be:
6364.85 x 4% × (10/365) ≈ 6.98
After withdrawing $2000, she has $4364.85. If this remains for 3days, her interest would be:
4364.85 x 4% × (3/365) ≈ 1.44.
In totality, her interest would be: 5.13 + 11.00 + 6.98 + 1.44 = 24.55.
Hence, her money earned a simple interest of $24.55.
If a= -5, what is the value of a^2-4/a+2
Answers
Answer:
-7
Step-by-step explanation: When a= 5, let's substitute all a's with 5 in the expression:
[tex]\frac{a^{2}-4 }{a+2}\\\frac{(-5)^{2}-4 }{-5+2}\\\\\frac{25-4}{-3}\\\frac{21}{-3} \\= -7[/tex]
Hamzah the fantastic, hot or nah?
Answers
HELP PLEASE!!!!! 50 POINTS!!!!!!!!
Which of the following graphs could be the graph of the function f(x)= -0.08x(x^2-11x+18)?
Answers
Answer:
see below
Step-by-step explanation:
f(x)= -0.08x(x^2-11x+18)
Factor
f(x)= -0.08x(x-9)(x-2)
Using the zero product property to find the zeros
0= -0.08x(x-2)(x-9)
-0.8x =0 x-2 =0 x-9 =0
x=0 x=2 x=9
Multiply out
f(x) = -0.08 x^3 + 0.88 x^2 - 1.44 x
The highest power is x^3
f(-∞) = -0.08( -∞)^3 = - ( -∞) = ∞
As x goes to -∞ f(x) goes to +∞
f(∞) = -0.08( ∞)^3 = - ( ∞) = -∞
As x goes to ∞ f(x) goes to -∞
Answer:
Option C or the third graph is the correct choice
Edg 2020
One week, Brooklyn earned $179.30 at her job when she worked for 11 hours. If she is paid the same hourly wage, how many hours would she have to work the next week to earn $244.50?
Answers
Answer:
15 hours
Step-by-step explanation:
By dividing $179.30 by the 11 hours she worked, we know that she makes $16.30 per hour. By using that same wage, we can take her goal earnings of $244.50 and divide it by her wage.
$244.50/$16.30 = 15 hours.
Hope this helps!
Answer:
15 hours
Step-by-step explanation:
By dividing $179.30 by the 11 hours she worked, we know that she makes $16.30 per hour. By using that same wage, we can take her goal earnings of $244.50 and divide it by her wage.
$244.50/$16.30 = 15 hours.
Hope this helps!
if f(x) = -3x - 2; Find f(x)
Answers
x=-1/2
Step-by-step explanation:
if you want explanation let me know?
0=-3x-2
3x=-2
X=-2/3
Math minute I need help with all questions I hav 4 minutes
Answers
Answer:
can you he lp me
Step-by-step explanation:
Answer:
1. 0.019
2. 4-28
3. 4
4. 6:00
5. 6
6. 16
7. 7
8. >
9. <
10. >
Dominic spent $8 on a book. He made $6 doing chores for a neighbor. What numbers represent the situations?
0 -8 and -6
O-8 and 6
O 8 and -6
O 8 and 6
Hurry plz!
Answers
Answer:
Its B
Step-by-step explanation:
I took an assignment in edge 2020
I really need help pls can anyone help me I would be so grateful if you help me
Answers
Answer:
the image is blurry
Step-by-step explanation:
sorry but the image is not full visible because it is blurry:(
what's the big number 1.5 or 15
Answers
Answer:
15 is bigger
Step-by-step explanation:
1.5 is smaller
Answer:
15
Step-by-step explanation:
According to the rules of significant figures, what is the correct answer to 3.4 x 5
A. 20
B. 17
C. 10
Answers
0.00581 in scientific notation
Answers
Answer:
5.8 × 10-3
Step-by-step explanation:
Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the
10. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.
Evaluate the expression: (16 ÷ 4)3 – 6 The solution is _____.
Answers
Answer:
The answer is 6
Step-by-step explanation:
To solve this expression you use PEMDAS
16÷4=4
4×3=12
12-6=6
Answer:
(16/4)3 - 6 = ?
=> (16 * 3/ 4 * 3) - 6 = ?
=> (48 / 12) - 6 = ?
=> 4 - 6 = ?
=> -2 = ?
Therefore, (16/4)3 - 6 = -2
If my answer helped, kindly mark me as the brainliest!!
Thank You!!
On a map, 1 inch equals 6 miles. Two cities are 7.5 inches apart on
the map. What is the actual distance between the cities?
I really need help