1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
fgiga [73]
4 years ago
15

I suck at this, does anyone know?

Mathematics
1 answer:
Helga [31]4 years ago
3 0
For a 2x2 matrix, the determinant is the absolute value of ad-bc
in this case, a=4, b=-7, c=3, d=-2
4*(-2)=-8
-7*3=-21
-8-(-21)=13
so the answer is D

refer to this website for details:
https://www.mathsisfun.com/algebra/matrix-determinant.html


You might be interested in
The distance from Jacksonville to Tampa is 171 miles. The distance from Tampa to Miami is 206 miles. Use the triangle inequality
Natali [406]
The triangle inequality theorem states that any side of a triangle is always shorter than the sum of the two other sides. 
That means if you add up the distance from jacksonville to tampa and the distane from tampa to miami, the distance from jacksonville to miami must be less than that. 

171 miles + 206 miles = 377 miles

the distance from jacksonville to miami must be less than 377 miles 
3 0
3 years ago
39.6 x 5.20 with steps
dlinn [17]

Answer:

205.92

Step-by-step explanation:

just basic math

8 0
3 years ago
Read 2 more answers
assume the substance has a half-life of 11 years and the initial amount is 126 grams.How long will it be until only 15 % remains
Mumz [18]
(126) times (1/2 to the x/11 power) = 15% times 126

(1/2) to the x/11 power = 0.15

Take the log of both sides :

(x/11) times log(1/2) = log(0.15)

Multiply both sides by 11 :

'x' times log(1/2) = 11 x log(0.15)

Divide both sides by " log(1/2) " :

x = 11 x log(0.15)/log(1/2) = <em><u>30.107 years</u></em> (rounded)

That's the time it takes for <em><u>any-size</u></em> sample of this substance
to decay to 15% of its original size.


5 0
3 years ago
SUPER EASY, ILL GIVE A BRAINLIEST THINGY TO FIRST ANSWER. At the store, two brands are sold. Brand A is offered as 6 for $0.85.
Marysya12 [62]

Answer:

8 for $1.00

step by step explanation:

8 0
3 years ago
Please help me the pic might not load
ladessa [460]
<h3>Answer: B) 25 = 10 + w</h3>

5 0
3 years ago
Other questions:
  • On a trip to Sacramento, Shawna traveled 400 miles in 8 hours. The next time she made the same trip, it took 10 hours. How much
    5·1 answer
  • What is the slope of the line in this graph?
    6·1 answer
  • Jane is considering installing gutters around her rectangular home that is 60 Feet by 45 feet If the gutter material cost $2.00
    14·1 answer
  • If a number is divided by eleven, the solution is two-fifths. What is the number?
    15·2 answers
  • The differece of twice <br> a number and five is<br> three. Find the number
    8·2 answers
  • Jayce sold 218 cups of lemonade at his lemonade stand. What is 218 rounded to the nearest ten?
    6·2 answers
  • Can someone please help me with questions 12 through 14 with the answer correct I was trying but I don’t know what I put down is
    10·1 answer
  • Someone PLZ help me plz :
    5·2 answers
  • Can someone pls help me in here I will give you credit pls…
    15·1 answer
  • How far is the jump from 45 from 65
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!