Answers
Answer:
The first one
Step-by-step explanation:
The product[tex]-4.\left[\begin{array}{c}8&-1&-5&9\end{array}\right][/tex] is equal to[tex].\left[\begin{array}{c}-32&4&20&-36\end{array}\right][/tex]. Option A is correct.
We have to find the product of[tex]-4.\left[\begin{array}{c}8&-1&-5&9\end{array}\right][/tex].
To do this we need to multiply -4 with each element in the matrix.
-4×8 = -32
-4×-1 =4
-4×-5=20
-4×9=-36
Now the matrix becomes [tex].\left[\begin{array}{c}-32&4&20&-36\end{array}\right][/tex].
Hence, the product[tex]-4.\left[\begin{array}{c}8&-1&-5&9\end{array}\right][/tex] is equal to[tex].\left[\begin{array}{c}-32&4&20&-36\end{array}\right][/tex]. Option A is correct.
To learn more on Matrices click here:
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Related Questions
Solve for x.
6(x - 2) = 4
a) x = 2 1/3
b) x = 1 1/3
c) x = 1
Answers
Answer:
x = 2 2/3
Step-by-step explanation:
6(x - 2) = 4
Distribute
6x - 12 = 4
Add 12 to each side
6x-12+12 = 4+12
6x = 16
Divide by 6
6x/6 = 16/6
x = 8/3
x = 2 2/3
[tex]\implies {\blue {\boxed {\boxed {\purple {\sf {x = 2 \frac{2}{3}}}}}}}[/tex]
[tex]\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\red{:}}}}}[/tex]
[tex]6 \: ( \: x - 2 \: ) = 4[/tex]
➼[tex] \: 6x - 12 = 4[/tex]
➼[tex] \: 6x = 4 + 12[/tex]
➼[tex] \: 6x = 16[/tex]
➼[tex] \: x = \frac{16}{6} [/tex]
➼[tex] \: x = \frac{8}{3} [/tex]
➼[tex]\:x = 2 \frac{2}{3} [/tex]
[tex]\large\mathfrak{{\pmb{\underline{\blue{To\:verify}}{\blue{:}}}}}[/tex]
[tex]6 \: ( \: x - 2 \: ) = 4[/tex]
➺[tex]\:6 \: ( \: 2 \frac{2}{3} - 2 \: ) = 4[/tex]
➺[tex] \: 6( \: \frac{8}{3} - 2 \: ) = 4[/tex]
➺[tex] \: 6 \: ( \: \frac{8 - 6}{3} \: ) = 4[/tex]
➺[tex] \: 6 \: ( \: \frac{2}{3} \: ) = 4[/tex]
➺[tex] \: 6 \times 0.667 = 4[/tex]
➺[tex] \: 4.002 = 4[/tex]
➺[tex] \: 4 = 4[/tex]
➺[tex] \: L.H.S.=R. H. S[/tex]
[tex]\boxed{Hence\:verified.}[/tex]
[tex]\bold{ \green{ \star{ \orange{Mystique35}}}}⋆[/tex]
a. 37
b. 62
c. 60
d. 39
Answers
Answer:
39 lang po
Step-by-step explanation:
samatolong sana lag Yan nyo po Ng brainlest
[tex]\huge\bold{Given :}[/tex]
Angle ABC = 81°
Angle BAC = a°
Angle BCA = 62°
[tex]\huge\bold{To\:find :}[/tex]
The measure of a.
[tex]\large\mathfrak{{\pmb{\underline{\orange{Solution}}{\orange{:}}}}}[/tex]
[tex]\longrightarrow{\green{a.\:37°}}[/tex]
[tex]\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\red{:}}}}}[/tex]
We know that,
[tex]\sf\pink{Sum\:of\:angles\:of\:a\:triangle\:=\:180°}[/tex]
➪ ∠ ABC + ∠ BAC + ∠ BCA = 180°
➪ 81° + a° + 62° = 180°
➪ a° + 143° = 180°
➪ a° = 180° - 143°
➪ a° = 37°
Therefore, the measure of a is 37°.
Now, the three angles of the triangle are 81°, 37° and 62°.
[tex]\large\mathfrak{{\pmb{\underline{\blue{To\:verify}}{\blue{:}}}}}[/tex]
∠ ABC + ∠ BAC + ∠ BCA = 180°
✒ 81° + 37° + 62° = 180°
✒ 180° = 180°
✒ L. H. S. = R. H. S.
[tex]\boxed{Hence\:verified.}[/tex]
( Note: Kindly refer to the attached file. )
[tex]\huge{\textbf{\textsf{{\orange{My}}{\blue{st}}{\pink{iq}}{\purple{ue}}{\red{35}}{\green{ヅ}}}}}[/tex]
Please help if you know how to solve it
Thank you!
Answers
Answer:
opsihsjijjakih
Step-by-step explanation:
jiompzjksuik
what is the scale factor from figure a to figure b
Answers
Answer:
[tex]\frac{1}{2}[/tex]
Step-by-step explanation:
The scale factor is the ratio of corresponding sides , B to A
The right vertical side of B is 2 units
The right vertical side of A is 4 units
scale factor = [tex]\frac{2}{4}[/tex] = [tex]\frac{1}{2}[/tex]
solve the inequality:
5 (2h+8) < 60
Answers
Answer:
5 (2h+8) < 60
10h+40<60
10h<20
h<2
Your Welcome
BIFFY OUT!!!
The diagonal of a TV is 26 inches long. Assuming that this diagonal forms a
pair of 30-60-90 right triangles, what are the exact length and
width of the TV? PLEASE HURRY
Answers
Answer:
D
Step-by-step explanation:
30-60-90
Hypotenuse = 26
one side is half.
the other side is 1/2[tex]\sqrt{3}[/tex]
hank paid #3.50 for 2 hamburgers. how much will he pay for 8 hamburgers?
Answers
Answer:
$14
Step-by-step explanation:
3.50/2= 1.75
1.75*8= 14
Please help! I don't know how to do this.
Write a polynomial of least degree with roots 1 and 2.
Answers
Answer:
f(x) = x^2 - 3x + 1.
Step-by-step explanation:
If the roots of this polynomial are 1 and 2, the corresponding factors are (x - 1) and (x - 2). Multiplying, we get
f(x) = (x - 1)(x - 2) = x^2 - 3x + 1
The polynomial of least degree with roots 1 and 2 is f(x) = x^2 - 3x + 1.
Please help me i need someone to help!
Answers
Answer:
so to do this we basicely just go through and substitute the anser in and see if it works.
60+10=70
60-10=50
NO
50+20=70
50-20=30
RIGHT
so the answer is the second one
How many solutions does the equation sin(5x) = 1/2 have on the interval (0,2pi]?
Answers
Answer:
1/2 has two solutions for 5x
Step-by-step explanation:
But if you add 2pi, 4pi, 6pi, 8pi to the solutions then divide by 5, you get 10 solutions for x
Answer :
sin(5x) = 1/2 has two solutions for 5x, but if you add 2pi,4pi,6pi,8pi to the solutions and then divide by 5, you get 10 solutions for x.
A company has the pay scales below , with the percent of employees receiving that pay listed. Find the best value to represent an average salary at this company. ( round to the nearest dollar ) Job Salary Percent of Employees Entry 23,264 60% 47,480 38% 117,027 2%
Answers
Answer:
$34,341
Step-by-step explanation:
Given :
Job Salary Percent of Employees Entry 23,264 60% 47,480 38% 117,027 2%
To obtain the best value for the mean salary ; we obtain the weighted average ;
Σ(salary * weight factor) / Σ weight
[(23264 * 0.60) + (47480 * 0.38) + (117027 * 0.02)] ÷ (0.60 + 0.38 + 0.02)
= 34341.34 / 1
Average salary = 34341.34
= $34,341 ( nearest dollar)
Find the measure of the missing angles to name the shortest and longest sides. (2x) x+15) 1. X= 2.
Answers
Answer:
KINDLY CHECK EXPLANATION
Step-by-step explanation:
The triangle Given is right angled :
Hence, the sum of the two angles = 90°
Hence, 2x + (x + 15) = 90
2x + x + 15 = 90
3x = 90 - 15
3x = 75
x = 75 / 3
x = 25
2x = 2 * 25 = 50
(x + 15) = 25 + 15 = 40
Hence, largest angle = angle Y
Largest side = side opposite largest angle = AD
smallest angle = (x + 15) = 40
Smallest side = side opposite smallest angle = AY
What are the zeros of the quadratic function
y = 6x2 + 3x - 45
Answers
Answer:
l think
y= x^2
.
.
.
.
..
..
.
.
.
.
Answer :
x = −3
x = 5/2 = 2.500
2. The sum of k and 10 is 48
Answers
Answer:
k=38
Step-by-step explanation:
38+10=48
Find the point that partitions a segment AB where A (-2, -6) and B (6, 12) into two equal parts.
Answers
The midpoint for any segment/line when you're given the start and end point of the line as A=(x1,y1) and B=(x2,y2) is
( ((x1 + x2) /2), ((y1 + y2)/2) )
So here the point is
( (-2+6)/2), (-6+12)/2) )
= (2, 3)
So it's the second option
will someone help me on this please i really need this
Answers
Answer:
2.24
Step-by-step explanation:
the total surface area=
(3+10+5+10+6)×(20) + (2×3×24) + (2×½×(14+10)×3)
= 680 + 144 + 72
= 896 ft²
the paint will be needed at least :
896/400 × 1 gallon = 2.24 gallons
calculate the percentage increase if the price of a $30 train ticket is increased to $42
Answers
Answer:
40 % increase
Step-by-step explanation:
New price - original price
42-30 = 12
Divide by original price
12/30 = .4
Change to a percent
.4 * 100
40%
40 % increase
seventh, and eighth grade students. The 5 sixth
grade and 9 seventh grade students make up
43.75% of the entire team. How many eighth
grade students are on the team?
Answers
Answer:
18
Step-by-step explanation:
First, we know that the total is equal to 100%. We then know that 14 students make up 43.75%, and eight grade students make up the rest, at 100-43.75=56.25%.
One way we can figure this out to find how many students make up each percent. To find this, we can simply divide the number of students (14) by their percent (43.75) to get 14 students/43.75 percent = 0.32 students per percent. We can then multiply this by 56.25 to get 18 as our answer for the number of eight graders.
Answer: 18
Step-by-step explanation:
14/43.75% = 0.32
56.25 × 0.32 = 18
Therefore, 18 is the answer to this equation.
Given the following quadratic equation, find the average rate of change
for the interval (1,3]. *
f(x)= 3x^2
Answers
Triangle ABC is reflected across x = 1 and y = -3. What are the coordinates of reflection image of A after both reflections
Answers
Answer:
(1,0)&(0,-3)
Step-by-step explanation:
might be not sure..
PLEASE HELP: Click on the graph to choose the correct answer to the equation.
x + y > 0
(the ones with multiple are all separate I just couldn't attach all.)
Answers
Answer:
It's the third one, I hope so. y<1/2x
Step-by-step explanation:
I hope this helps. :)
A hat contains slips of paper with the names of the 26 other students in Eduardo’s class on them, 10 of whom are boys. To determine his partners for the group project, Eduardo has to pull two names out of the hat without replacing them.
What is the probability that both of Eduardo’s partners for the group project will not be boys?
StartFraction 9 Over 65 EndFraction
StartFraction 24 Over 65 EndFraction
StartFraction 64 Over 169 EndFraction
StartFraction 128 Over 325 EndFraction
Answers
Answer:
24/65
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
edge 2023
A figure is shown with the given dimensions.
What is the area, in square feet, of the figure?
Answers
Answer:
[tex] \blue{A = 24~ft^2} [/tex]
Step-by-step explanation:
This figure is a trapezoid with bases of 10 ft and 6 ft and height of 3 ft.
[tex] A = \dfrac{b_1 + b_2}{2}h [/tex]
[tex] A = \dfrac{10~ft + 6~ft}{2} \times 3~ft [/tex]
[tex] \blue{A = 24~ft^2} [/tex]
what is the solution to this equation?
4x+16-x=22+6
Answers
Answer:
x=4
Step-by-step explanation:
4x+16-x=28
4x-x+16=28
3x+16=28
3x=28-16
3x=12
x=12/3
x=4
Identify the type of function represented by
f(x) = 4.2%
O A. Exponential growth
O B. Exponential decay
O C. Decreasing linear
O D. Increasing linear
Answers
calculate the volume of a ball having a radius of 8 cm
Answers
Answer:
267.9 [tex]cm^{3}[/tex]
Step-by-step explanation:
volume of a circle = 4/3 * π *[tex]r^{2}[/tex]
=4/3 *3.14 *[tex]8^{2}[/tex]
=12.56/3 *64
=803.84/3
=267.94
=267.9 [tex]cm^{3}[/tex]
Mark rolls 2 fair dice and adds the results from each.
Work out the probability of getting a total of 5.
Answers
There are 10 ways to roll 1 thru 5…
Thus there are 26 / 36 ways to roll >5 (13/18)
Linda was pulled over by a policeman
for driving 80 miles per hour. One mile
is about 1.61 kilometers. About how
many kilometers per hour was Linda
driving when she got pulled over by the
policeman?
Answers
Answer:128.74
Step-by-step explanation:
Find the median of the given data 60cm,56cm,45cm,50cm,54cm,51cm,52cm,48cm,46cm,53cm
Answers
1.875mps into kilometers per hour
Answers
Answer:
Answer:
6,75 kilometres per hour
Step-by-step explanation:
1,875×18÷5
=6,75