Mathematics High School

Consider the matrices. What is the product of matrix PQ?

Consider The Matrices. What Is The Product Of Matrix PQ?

Answers

Answer 1

Answer:

Step-by-step explanation:

P = [tex]\left[\begin{array}{ccc}2&7\\3&0\\5&4\\-1&-3\end{array}\right][/tex]

Q = [tex]\left[\begin{array}{ccc}-4\\-3\end{array}\right][/tex]

PQ = [tex]\left[\begin{array}{ccc}2(-4)+7(-3)\\3(-4)+0(-3)\\5(-4)+4(-3)\\-1(-4)+(-3)(-3)\end{array}\right][/tex] = [tex]\left[\begin{array}{ccc}-29\\-12\\-32\\13\end{array}\right][/tex]

Related Questions

Can anyone please help me with this. It’s late and I need help asap :)

Answers

Answer:

I think they're both always but I'm not sure

They’re both always :))

A triangle has vertices (2, 1), (5, 1), and (5,5). What is the length of the longest side of the triangle?

HELPPPP !!! I ONLY HAVE 30 MINUTES LEFT

Answers

Answer:

5,5

Step-by-step explanation:

it has the longest side

What is the transformation from ΔA'B'C' to ΔA''B''C'' ?

Answers

1. 90 counterclockwise
2. 180 degrees
3. reflection across y = x

Help me with this problem please

Answers

Answer:

the answer is B

Step-by-step explanation:

help please i’m stuck lol

Answers

Answer:

The answer for this is x=-5

Answer:

x=-5

Step-by-step explanation:

-4x+1=21

move the 1 to the right side and subract it so it will turn into -4x=20

divide -4 to get the x by itself and then you will get x=20/-4 this will now divide and be x=-5

HELP HELP HELP HELP HELP HELP PLEASE!!

Answers

Answer:

A

Step-by-step explanation:

I took the test

Last year Lucy made $87.32 house-sitting for a neighbor and $82.29 mowing lawns. How much money did she earn in all?

Answers

Answer:

$169.61

Step-by-step explanation:

X = 87.32 + 82.29

X = 169.61

Answer:

$169.61

Step-by-step explanation:

87.32+82.29=169.61

need brainlyest plz

Is this relation a function? Justify your answer.
11
10
9
8
7
6
5
4
3
2
1
1 2
4 5
6 7 8 9 10 11
A. Yes, because every x- and y-value is positive.
B. No, because two points with the same y-value have different x-
lues
C. Yes, because every x-value corresponds with a single y-value.
D. Yes, because the number of x-values is the same as the number of
y-values

Answers

Yes, because every x- and y- value is positive, hope it helps!
The answer is C, not A.

Find the measure of the missing angle

Answers

Answer:

154

Step-by-step explanation:

180-26=154

154 is the answer. hope this helps :)

Amber has a dog walking business. she walks a golden retruever 1.8 miles each work day for a week. How many miles does Amber walk the golden retreiver? plz tell me i will give you brainlist

Answers

Answer:

12.6

Step-by-step explanation:

Answer:9 miles

Step-by-step explanation:

5 working daya x 1.8 miles = 9 miles

Step-by-step explanation: 1.8 x  7

Pls help I need the answer quick

Answers

answer:
49
..............

Q4. One card is drawn at random from a pack of 52 playing cards. Find the probability of choosing a black card between the numbers 5 and 10 (inclusive). A. 3/13 B. 1/13 C. 1/2 D. 4/13​

Answers

Answer: b 1/13

Step-by-step explanation: SolutionTotal cards: 52Number of face card: 12

Probability of getting a face card:

P(F)=12/52 = 3/13

​Probability of not getting a face card:

P(F ′ )=1−P(F)=1− 1/13 = 10/13

​

Some one help pleaseeeee its very easy

Answers

Answer:

the last one 5/6

Step-by-step explanation:

Answer:

5/6

I hope this helps!


20 POINTS NEED HELP ASAP WILL MARK BRAINLIST




Find f(3) for f(x) = -5x – 2


​

Answers

Answer:

-17

Step-by-step explanation:

F(3) find f(x) = -5x - 2

As u can see instead of x inside the parentheses it's a 3, meaning we have to replace x with 3 in the equation

f(3) = -5x - 2

f(3) = -5(3) - 2

f(3) = -15 - 2

f(3) = -17

Find the value of “X”

Answers

Answer:

x = 55

Step-by-step explanation:

A triangle equals 180 degrees, b will be used to find the missing angle.

21 + 34 + b = 180

55 + b = 180

subtract 55 from both sides

b = 125

A straight line is 180 degrees and the b, the missing angle, and x are supplementary angles so

125 + x = 180

x = 55

PLEASE NEED HELP NOW WILL GIVE BRAINLIEST
What is the value of B?

Answers

So all the angles of triangle add up to 180 degrees. So you add up the the two other sides and subtract 180 by the answer.

61 + 58 = 119

180 - 119 = 61

So, you’re answer would be 61 degrees. Hope that helped :)

Erin owns 48 movies on DVD. Three eighths of the movies are comedies, 1/3 are dramas, 1/4 are action adventure, and the rest are science fiction. What part of her movie collection is science fiction?

Answers

Science fiction = 1/24

Translate the phrase into an algebraic expression.
3 times b

Answers

Answer:

3b

Step-by-step explanation:

It`s just . . . 3b lol

When numbers and variables multiply, they are put in the form of (integer)(variable). They phrase can only be further simplified if there is a number substitution for b.

Pls help will give brainliest to who is Wright

Answers

Answer:

24

Step-by-step explanation:

Hope this helps!     :3

plz mark as brainliest!

Answer:

The answer is 24 :)

A car park space needs 8 square metres for 1 car. just considering the spaces for parking, what dimensions for a car park would be needed for 60 cars

Answers

The dimensions of a car park for 60 cars is: 480 m^2

To solve this exercise we have to do a mathematical operations of multiplication with the given information.

Information about the problem:

car park space = 8 m^2/cardimensions for a car park (60 cars) = ?

To know the dimensions for the car park  of 60 cars we have to do the following multiplication:

dimensions for a car park (60 cars) = car park space * 60 cars

dimensions for a car park (60 cars) = 8 m^2/car * 60 cars

dimensions for a car park (60 cars) = 480 m^2

What is multiplication?

It is a mathematical operation that consists of adding the same number, called the multiplicand, as many times as indicated by another number, called the multiplier. The result is called the product.

Example: 2+2+2= 6 is equal to say 2*3= 6

Multiplied * multiplier = product

Learn more about multiplication at: brainly.com/question/10873737

#SPJ4

the length of one side of a rectangle is p cm and width is 3(p-2) cm the perimeter is 44 cm find the length and width of rectangle​

Answers

Answer:

Length = 7cm, Width = 15cm

Step-by-step explanation:

Length = p

Width = 3(p-2)

          = 3p-6

Perimeter = length + width + length + width

                = p + 3p-6 + p + 3p-6

                = 8p-12

8p - 12 = 44

Isolate 8p.

8p = 44+12

    = 56

Find p.

p = 56 ÷ 8

p = 7

Length = 7cm

Width = 3(7)-6

          = 21-6

          = 15cm

Find the value of x in this picture.

Answers

Answer:

i dont see a pic

Step-by-step explanation:

There is no available picture

When paying for a restaurant order, a customer's total for food was $28.50. What is a 16% tip for that total?

Answers

Answer:

33.06

Step-by-step explanation:

you would do 28.5*0.16 and you would get 4.56 ss you would add that to the cost and you would get 33.06

Part A: determined if the triangles are similar?

Part B: complete the similarity statement, if they are not similar, type Not Similar.

Answers

Answer:

please pleasehelp help me me my question

PLEASE I NEED HELP FOR THIS TEST

Simplify the difference. Write your answer in standard form.
2) (8r - 4r + 8) - (5r - 8 + 7r")
A) -24r + 3r + 16
B) 3r + 13r + 16
C) -11p+ 3r + 16
D) -317 + 3r + 16

Answers

Answer:

- 11r³ + 3r + 16

Step-by-step explanation:

( 8r - 4r³ + 8 ) - ( 5r - 8 + 7r³ ) =

= 8r - 4r³ + 8 - 5r + 8 - 7r³ =

= - 11r³ + 3r + 16

there are 20% more goblins than wizards in magic club there are 120 goblins in magic club

Answers

Answer:

Final Answer: There are 100 wizards in the magic club

Step-by-step explanation:

Since this question is asking for how many wizards are in magic club, we can represent wizards with the variable "w"

w = wizards

Next, we know that there are 120 goblins and that there are 20% more goblins than wizards in magic club.

120 = w + 20%w

120 = w + 0.2w

(percentages are just the percent/100)

120 = 1.2w

1200 = 12w

100 = w

Will mark brainliest for whoever answers

Answers

Answer:

D

Step-by-step explanation:

Correlation coefficient is the leading coefficient of the line of best fit. We can estimate the slope by looking at the plots. The plots are moving in a positive slope so we can remove B and C and E.

We're left with slope of 1 and 0.5

We can faintly imagine the line of slope 1. It doesn't really fit. SO it is 0.5

add or subtract the following fractions. write in simplest form.

3/4 - 3/10​

Answers

Answer:

I got 9/20

Hope that helps!

The cylindrical part of an architectural column has a height of 320 cm and a
diameter of 30 cm. Find the volume of the cylindrical part of the column. Use
3.14 for rand round your answer to the nearest cubic centimeter if needed.
30 cm
320 cm
A. 904,320 cm3
B. 226,080 cm3
C. 75,360 cm3
D. 72,000 cm3

Answers

Answer:

226,080 cm3

Step-by-step explanation:

Answer:

226, 080- (B)

Step-by-step explanation:

Ap3x

Use the equation y = x - 2 and perform a reflection over the x-axis. Write an equation in 2

1

slope intercept form that represents the new line.

Answers

Answer:

Please check the explanation.

Step-by-step explanation:

Given the equation

y=x-2

We know that Reflecting over the x-axis inverts the sign of the y-coordinate.

Thus, after reflecting over the x-axis, the equation would be:

-y = x - 2

Now, writing the equation in the slope-intercept form

y=mx+b

where

m is the slope and b is the y-intercept

so the equation in the slope-intercept form

-y = x - 2

y = -x + 2

Here,

The slope = m = -1The y-intercept = b = 2
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