Answer:
b) det (A)
Step-by-step explanation:
The determinant of the inverse of an invertible matrix is the inverse of the determinant: det(A-1) = 1 / det(A) [6.2. 6, page 265]. Similar matrices have the same determinant; that is, if S is invertible and of the same size as A then det(S A S-1) = det(A).
HAVE A GOOD DAY
Find the product of these complex numbers.
(5+6i)(3-3i) =
A. 33 + 3i
B. 15 + 18i
C. 15 - 18i
D. -3 + 3i
Answer:
A) 33+3i
Step-by-step explanation:
Use the FOIL method: (a+b)(c+d)=ac+ad+bc+bd(a+b)(c+d)=ac+ad+bc+bd.
15−15i+18i+18
combine like terms
(15+18)+(−15i+18i)
simplify
33+3i
Martin's bank account balance is negative. Each week that his
account remains negative the bank charges $36.50. Martin did
not make any deposits and now his bank account balance is
-$182.50. How many weeks was his account negative?
Answer:
5
Step-by-step explanation:
182.50/36.50 per week= 5 weeks
How do I find the indicated value for this problem?
Answer:
t_n =a +(n-1)d
t_100 = 2+ (100-1)6
= 2+99× 6
= 2 +594
= 596
plz help!!! pick abc or d
Answer:
-6n
Step-by-step explanation:
Position = 1
Value of term = -6
Give an example of a pair of variables where there would likely be a correlation, but no causation.
Answer:
Number of people with polio.
Ice cream sales.
Seems like a weird thing to be correlated but I saw a graph with this example and people used to think that ice cream was the reason for polio. It's obvious there's no causation!
hope this helps!!
a right cylindrical solid is cut in half to form the figure shown. if the length is 20 cm and the diameter is 8cm, what is the surface area? (please explain thoroughly)
Answer:
Step-by-step explanation: (96pi + 160)
cm^2
write an inequality in slope intercept form for the graph below. if necessary use <= or >=
Answer:
Where is the graph tho?
Step-by-step explanation:
pls help i need the answer
Using the net below, find the surface area
of the pyramid.
7 in.
3 in.
n.3 in.
Surface Area
[?] in.2
I
Enter
Answer
Answer:
51 in²
Step-by-step explanation:
formula of a triangle: [tex]\frac{1}{2}[/tex]bh
the base is 3 and the height is 7
1/2(3)(7)
1/2(21)=
10.5
Since there are 4 of these same triangles, we multiply by 4.
10.5 · 4 = 42 in²
formula of a square: bh
base is 3 and height is 3
(3)(3) =
9 in²
add them together and you get your answer of 51 in²
An employee put $5,000.00 in a retirement account that offers 9% interest compounded
annually. The employee makes no additional deposits or withdrawals. Which amount is closest
to the interest the employee will have earned at the end of 5 years?
Answer:
$7693.12
Step-by-step explanation:
Use the formula P(1+r/n)^nt
So 5000(1+.09)^5
That comes out to 7693.12
Hope this helps
Brainliest would be appreciated
John finished his 5 chores in 45 minutes. If he spent the same amount of time on each
chore, how long, in minutes, did it take him to finish each chore?
Answer:
9 Minutes
Step-by-step explanation:
5x9=45
Brainliest?
Show all work. 5. Find the surface area of the composite figure.
Answer:
4130 m²Step-by-step explanation:
[tex]2\cdot35\cdot20+2\cdot35\cdot15+2\cdot20\cdot15+2\cdot9\cdot18+2\cdot9\cdot21+18\cdot21=\\\\=1400+1050+600+324+378+378=4130\,m^2[/tex]
I believe this is goodbye i hope i helped u guys.
if not receive this as a token of my appreciation
Answer:
goodbye??? what're you going to bed? you alr my dude?
Step-by-step explanation:
Coach Smith purchased x footballs and y basketballs at a sporting goods store. The price of one football was $35.00 and the price of one basketball was $45.00. There was no tax included on the purchase. Part A. Write an expression that can be used to find the total cost of x footballs and y basketballs. Part B. The total cost of the purchase was $455.00. If Coach Smith purchased 4 footballs, find the number of basketballs he purchased.
A city that has an elevation of 15 meters is closer to sea level than a city that has an elevation of -10 meters. True or false
Which scenario would result in 12 possible outcomes?
You roll a number cube twice.
You flip a coin twice.
You roll a number cube, and then you flip a coin.
You roll a number cube once.
NO LINKS OR FILES ,, JUST THE CORREDT ANCWER AND I WILL GIVE BRAINLIEST
Answer:
C.
Step-by-step explanation:
rolling a cube would have six possible but then flipping a coin would mean it would be 12.
If the radius of the circle below is 12 feet, find the area of the shaded region.
Answer:
The area of the shaded region is 195.84sqft.
Step-by-step explanation:
Area of shaded region = area of trapezium- area of circleArea of shaded region= 1/2(sum of parallel side)*height - π[tex](radius)^{2}[/tex]
Area of shaded region=1/2(20+34)*24 - π[tex](12)^{2}[/tex]
Area of shaded region=648-452.16
Area of shaded region=195.84 sqft.
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How do I find the indicated value for this problem?
Answer: an = a1 +
Step-by-step explanation:
Find the perimeter of the right triangle. If necessary, round to the nearest tenth. a. 13 in. b. 169 in. c. 60 in. d. 30 in.
Question: Find the perimeter of the right triangle. If necessary, round to the nearest tenth. 4 cm 15 cm a. 15.5 cm
b. 30 cm
c. 60 cm
d. 34.5 cm
Answer:
d. 34.5 cm
Step-by-step explanation:
Applying
Perimeter of the right triangle (P) = a+b+c
P = a+b+c.................... Equation 1
But we can find the hyotenuse (a) using pythagoras theorem
a² = b²+c²
a = √(b²+c²)............... Equation 2
Substituting equation 2 into equation 1
P = √(b²+c²)+b+c................... Equation 3
From the diagram,
Given: b = 4 cm, c = 15 cm
Substitute these values into equation 2
P = √(4²+15²)+4+15
P = √(241)+4+15
P = 15.5+4+15
P = 34.5 cm
Hence the right answer is d. 34.5 cm
Jack hit a combined 18 doubles and triples last baseball season. A double is two bases and a triple is three bases. If he had 42 total bases in these 18 hits, how many of these hits were triples? The solution is
Answer:
I wanna say 7 but I could be wrong
Step-by-step explanation:
The number of triples is 6.
What is a linear equation?A Linear Equation is an equation of a line. An equation in which the highest power of the variable is always 1. An equation which is expressed in the form of ax+b = 0, where a and b are two integers, and x is a variable and has only one solution.
For the given situation,
Total number of hits = 18
Doubles + triples = 18
Let x be the number of triples. Then
Number of doubles = 18-x
Number of bases for doubles = 2 bases
Number of bases for triples = 3
The equation for the above situation is
⇒ [tex]2(18-x)+3x=42\\[/tex]
⇒ [tex]36-2x+3x=42[/tex]
⇒ [tex]x=42-36[/tex]
⇒ [tex]x=6[/tex]
Hence we can conclude that the number of triples is 6.
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3(3u-2)=2(3u+3)
What is the steps
PLZZZ HELPPP MEEE REWARD BRAINLIESSTT TO BEST ANWSERRR
Answer:
[tex]Q1 . (11x + 9) - (5x +1) = 11x + 9 -5x - 1 = 6x + 8[/tex]
option 1
[tex]Q2. \ \ 6(2x -3)+4=16-(-18)\\[/tex]
[tex]12x - 18 + 4 =16 +18\\12 x -14 = 34\\12x = 34 + 14 \\12x = 48\\x = 4[/tex]
option 4
[tex]Q3 .f(x) = 2x, \ g(x) = -2x^3 +2x\\[/tex]
[tex]f(x) + g(x) = -2x^3 +4x[/tex]
option 3
[tex]Q4. \ \sqrt{18x^3y5^}[/tex] [tex]= \sqrt{2*3^2*x^3*y^5} = 3*x*y^2\sqrt{2*x*y} = 3xy^2\sqrt{2xy}[/tex]
option 2
A car wash cleaned 38 cars in 2 hours. At this rate,
how many cars can it clean in 7 hours?
Answer:
133 cars in 7 hours
Step-by-step explanation:
divide 2 and 38 wich is 19 so its 19 cars per hour so now 19 times 7 and get 133 plz mark brainliest
Answer:
I am no mathematician but i would say 133cars
Step-by-step explanation:
I first divided 38 by 2 which gave me 19 so on the average they cleaned 19 cars an hour
I then multiplied 19 by 7 giving me 133
Hope this works!!!
Find the area of the circle in terms of Pi. (TT)
10 cm
A
Answer:
A≈314.16
Step-by-step explanation:
Write the equation of the circle with a radius 7 and center (13, 15).
HELP ASAP!!!
Answer:
Option b is the correct answer
[tex] (x - 13)^2 + (y - 15)^2 = 49 [/tex]
Step-by-step explanation:
[tex] (x - 13)^2 + (y - 15)^2 = 7^2 [/tex]
[tex] (x - 13)^2 + (y - 15)^2 = 49 [/tex]
Multiple choice PLEASE HELP
Answer:
I think it is B
Step-by-step explanation:
Sorry if it is wrong
what is the 12th term of the sequence: 48,44,40,36...
Answer:
12
Step-by-step explanation:
The sequence starts at 48, and goes down 4 with each term. That means that we just need to subtract 4 from 48 12 times.
Hope that this helps!
Which is the better buy on apples?
7.64 for 8 lbs of apples
12.81 for 14 lbs of apples
Answer: The 12.81 for 14 lbs of apples is the better buy.
Step-by-step explanation:
Find the unit price (the price of 1 lb of apples)
7.64/8 lbs = 0.955 per pound
12.81/14 lbs. = 0.915 per pound;
What is the volume of a rectangular prism
7 inches long, 2 inches wide, and 8 inches high?
Answer:
112 in³
Step-by-step explanation:
ν = length*width*height
Find x ??????????????????????
Answer:
x = 2√58
Step-by-step explanation:
using the Pythagorean theorem:
x² = 14² + 6² = 232
x = √232 = 2√58