Evaluate UV if possible.

Evaluate UV If Possible.

Answers

Answer 1

Answer: B

Step-by-step explanation:

Multiply U and V:

[tex]\begin{pmatrix}-9&1&0\\ \:4&0&2\\ \:0&1&5\end{pmatrix}\begin{pmatrix}2\\ \:-2\\ \:1\end{pmatrix}[/tex]

[tex]\mathrm{Multiply \ the \ rows \ of \ the \ first \ matrix \ by \ the \ columns \ of \ the \ second \ matrix:}[/tex]

[tex]\begin{aligned}&\left(\begin{array}{ccc}-9 & 1 & 0\end{array}\right)\left(\begin{array}{c}2 \\-2 \\1\end{array}\right)=(-9) \cdot 2+1 \cdot(-2)+0 \cdot 1 \\&\left(\begin{array}{ccc}4 & 0 & 2\end{array}\right)\left(\begin{array}{c}2 \\-2 \\1\end{array}\right)=4 \cdot 2+0 \cdot(-2)+2 \cdot 1 \\&\left(\begin{array}{lll}0 & 1 & 5\end{array}\right)\left(\begin{array}{c}2 \\-2 \\1\end{array}\right)=0 \cdot 2+1 \cdot(-2)+5 \cdot 1\end{aligned}[/tex]

[tex]=\begin{pmatrix}\left(-9\right)\cdot \:2+1\cdot \left(-2\right)+0\cdot \:1\\ 4\cdot \:2+0\cdot \left(-2\right)+2\cdot \:1\\ 0\cdot \:2+1\cdot \left(-2\right)+5\cdot \:1\end{pmatrix}[/tex]

[tex]\mathrm{Simplify\:each\:part:}[/tex]

[tex]=\begin{pmatrix}-20\\ 10\\ 3\end{pmatrix}[/tex]

Therefore, the correct answer is B


Related Questions

Choose the correct graph of the function y=√x-3

Answers

Answer:

C. where the start point is on (3,0) and goes up and to the right

Step-by-step explanation:

y= √x−3

Swap sides so that all variable terms are on the left hand side.

√x−3 =y

Square both sides of the equation.

x−3=y^2

Add 3 to both sides of the equation.

x−3−(−3)=y^2 −(−3)

Subtracting −3 from itself leaves 0.

x=y^2 −(−3)

Subtract −3 from y^2.

x=y^2 +3

A store receives a shipment of boxes of tea. The total mass shipment is 6kg.

-each box has a mass of 0.040 kg.
-boxes of green tea make up 18% of the shipment.

How many boxes of green tea were in the shipment?
A. 7
B. 27
C. 58
D. 108

Answers

Answer: I think that the answer would be b or 27Step-by-step explanation: I did the math problem in my head.

What is the area, in square inches, of the isosceles trapezoid below?

Answers

the area of the trapezoid is 53.56

A school's principal wanted to give a special 'Good Luck' pencil for each student in the fifth grade. If there are 105 kids in the fifth grade, and there are 12 pencils in each box, how many boxes will he need to buy?

Answers

To find the number of boxes divide the total kids by number of pencils in each box. Here 105/12 leaves remainder. It means still kids are left over. So add 1 to the quotient
105/12= 8 and remainder is 9.
So add 1 to the quotient 8 which is 9
Total pencil boxes = 9

See the picture below and answer for 50 points and brainliest

Answers

Answer:

Non-linear equations:

[tex]y=x^2 +2x-3[/tex]

[tex]3y=2^x[/tex]

Step-by-step explanation:

Linear equation: y = mx + b

Therefore, a linear equation has 2 variables that have no exponents.

So the non-linear equations are:

[tex]y=x^2 +2x-3[/tex]  (this is a quadratic equation - polynomial with degree 2)

[tex]3y=2^x[/tex] (this is an exponential equation)

What is the volume of this cone? Use 3.14 for π and round your answer to the nearest tenth.

In your answer, give the volume of the cone rounded to the nearest tenth, and then explain how you calculated it.

Answers

Answer:

volume = 33.5 in³

Step-by-step explanation:

Formula:

[tex]\sf volume \ of \ a \ cone=\dfrac13\pi r^2h[/tex]

Given:

r = 2 inh = 8 inπ = 3.14

Substituting the given values into the formula:

[tex]\sf \implies volume=\dfrac13 \times 3.14 \times 2^2 \times 8[/tex]

                  [tex]=\dfrac13 \times 3.14 \times 4 \times 8[/tex]

                  [tex]\sf =33.49333333...[/tex]

                  [tex]\sf =33.5 \ in^3 \ (nearest \ tenth)[/tex]

Whcih choice best describes the group this shape belongs in, based on the kinds of sides and angles it has? Angela chose A as the correct answer. How did she get that answer?

Answers

The shape in the figure has 6 sides

The choice that describes the group the shape belongs to is (a) parallel sides, acute angles

How to determine the group of the shape?

From the figure, we have the following highlights

The shape has 6 sidesThe direct opposite sides are equalThe direct opposite sides are parallelThe measure of angles between adjacent sides are less than 90 degrees i.e. acute angles

The above highlight mean that:

The shape belongs to parallel sides, acute angles group of shapes

Hence, Angela's conclusion is correct

Read more about polygons at:

https://brainly.com/question/1592456

The length is :____meters and the width is____meters.

Answers

Answer:

Length = 42, Width = 14

Step-by-step explanation:

Say width = x

3x + x = 56

4x = 56

x = 14

14 x 3 = 42.

Answer:

width = 7

length = 21

Step-by-step explanation:

x + 3x = 56/2

4x = 28

x = 7

Find the equation of the line that passes through points a and B. A(1 ,7) B(-3,-1)

Answers

Answer:

well i wrote it in paper nothing to explain it's ez

Data Analysis 7th grade math
Laura kept a record of the number of minutes she spent at the gym this week.

Day Minutes
Monday 60
Tuesday 70
Wednesday 62
Thursday ?

How many minutes should she spend at the gym on Thursday in order to average 65 minutes a day for four days.

________ Minutes

Answers

You would add 60+70+62=192, then you would need to figure for x. You would take 65 and multiply it by 4. I got to make it average, 78.

she spends 68 minutes at the gym on Thursday in order to average 65 minutes a day for four days.

What is Average?

The mean (also known as the arithmetic mean, which varies from the geometric mean) of a dataset is calculated as the sum of all values divided by the total number of values. This measure of central tendency is usually referred to as the "average".

Granted, Laura recorded how long she spent at the gym each day this week.

Let "x" represent the time she spent working out on Thursday.

Since,

Average = (sum of values)/ count of values

Thus, in our case

Average = (60 +70 +62 +x)/4

average is 65 minutes a day for four days.

65 = 192 +x)/4

192 +x = 260

x = 260-192

x = 68

Therefore, she spends 68 minutes at the gym on Thursday in order to average 65 minutes a day for four days.

Learn more about Average here:

https://brainly.com/question/521501

#SPJ6

What the line measures

Answers

What is this question referring to

can someone pls answer the UNANSWERED questions. (the ones that dont have the blue dot on them) WILL MARK BRAINLIEST

Answers

Answer:

7.B

9.A

Step-by-step explanation:

Gcf of 24 and 36

is 12

a^2 and a is a

180-50

=130

acute mean less than 90 degrees

180-89=41

89 and 41 are acute

1 is also wrong

Answer:

  7.  B 2·2·3·a

  9.  B 41°

Step-by-step explanation:

You want the greatest common factor of 24a² and 36ab, and you want the smallest integer-valued angle in an acute triangle with one angle 50 degrees.

7. GCF

The factors of 24a² are 2·2·2·3·a·a.

The factors of 36ab are 2·2·3·3·a·b.

The factors these lists have in common are 2·2·3·a, matching choice B.

9. Angles

If one angle of a triangle is 50°, the sum of the other two angles must be ...

  180° -50° = 130° . . . . . . sum of angles B and C

One of these angles will be the smallest it can be only if the other is the largest it can be. The largest integer acute angle is 89°, so the smaller angle will be ...

  130° -89° = 41°

The smallest possible angle in the acute triangle is 41°.

__

Additional comment

8. A dodecagon has 12 lines of symmetry, 6 through opposite vertices, and 6 through opposite sides. The correct choice for 8 is A.

<95141404393>

Find the value of the expression 1/2x + 3 if x = 12

Answers

1/2(12) + 3 = 9

Change 1/2 into a decimal, multiply by 12, and then add 3

Step-by-step explanation:

please mark me as brainlest

Is ABSE- ATES? If so, identify the similarity postulate or theorem that
applies.

Answers

Hope it helps best of luck

CHOICES -> TRUE OR FALSE


Answers

Answer:

1.True

2.false

3.True

4.True

5.false

6.false

7.false

8.True

9.True

10.false

Step-by-step explanation:

10,000cm^2=1m^2

Consider the rectangle with width 4 ft and length 18 ft, write a ratio of the length to the width.

Answers

Answer: 18:4

Step-by-step explanation:

Ez

Answer:

9 : 2

Step-by-step explanation:

length : Width = 18 : 4

                       [tex]\sf = \dfrac{18 \ \div \ 2}{4 \ \div \ 2}\\\\=\dfrac{9}{2}[/tex]

                       = 9 : 2

The volume of a right cone is 252pi units^3. If its height is 21 units, find its radius.

Answers

Based on the calculations, the radius of this right cone is equal to 6 units.

Given the following data:

Volume of cone =  [tex]252\pi \;units^3[/tex]Height of cone = 21 units.

How to calculate the volume of a cone.

Mathematically, the volume of a cone is given by this formula:

[tex]V = \frac{1}{3} \pi r^2h[/tex]

Where:

h is the height.r is the radius.

Making r the subject of formula, we have:

[tex]r=\sqrt{\frac{3V}{\pi h} } \\\\[/tex]

Substituting the given parameters into the formula, we have;

[tex]r=\sqrt{\frac{3\times 252\pi}{\pi \times 21} } \\\\r=\sqrt{\frac{756}{21} }\\\\r=\sqrt{36}[/tex]

r = 6 units.

Read more on radius here: brainly.com/question/21367171

Find the volume. Please help! Thanks!
hehe

Answers

Volume of a Square Pyramid: 1/3 x length x width x height

Length = 2

Width = 2

Height = 3

Volume = 1/3 x 2 x 2 x 3

Volume = 1/3 x 4 x 3

Volume = 1/3 x 12

Volume = 4

Volume = 4 cm^3

Hope this helps!

For each pair of real numbers show that the first number is a factor of the second number?


Need help ASAP!!

Answers

Answer:

[tex]\red{ \rule{10pt}{999999pt}} \pink{ \rule{10pt}{999999pt}} \blue{ \rule{10pt}{999999pt}} \purple{ \rule{10pt}{999999pt}} \\ \red{ \rule{10pt}{999999pt}} \pink{ \rule{10pt}{999999pt}} \blue{ \rule{10pt}{999999pt}} \purple{ \rule{10pt}{999999pt}} \\ \red{ \rule{10pt}{999999pt}} \pink{ \rule{10pt}{999999pt}} \blue{ \rule{10pt}{999999pt}} \purple{ \rule{10pt}{999999pt}}[/tex]

Answer:

Putanginaaaaaaaaaaaaaaaaaaaaa

Joe collects toy cars and marbles. Whenever he collects 4 cars, he also collects 12 marbles. How many marbles does he collect after collecting 20 cars? What rule is being used?

Answers

Answer; 60

Step-by-step explanation:

solution:

here,

4 cars = 12 marbles

1 car = 12/4. = 3 marbles

then,

20 cars = 3(20) marbles

= 60 marbles

We can make this into a fraction  4/12 = 20/x

Then, we will solve for x

4x = 240    cross multiply

x = 60

Joe collects 60 marbles after collecting 20 cars.

The Multiplicative Inverse Property is being used.

Express √12+√27 in the form n√3, where n is an integer.

Answers

Answer:

5sqroot3

Step-by-step explanation:

see image.

An integer is just a whole positive or negative (positive in this case) number that's not a fraction or decimal or mixed number. In the answer that is the 5.

To simplify a radical, look for a factor that is a perfect square. Radicals and multiplying are very friendly to each other and you can separate the "radicand" (the inside number) into factors inside the radical also into separate radicals to simplify. See image

A group of people are fundraising, and each person raises a certain amount of money for every mile they walk. Each person's fundraising is represented below using d for the dollars that person raises and w for the miles that person walks. Select all the representations that can be described by the equation d = 2w.

Answers

Answer:

B, C, E

Step-by-step explanation:

According to coordinates on the graphs and numbers in the tables we have the following relationship:

A) d = 1/2wB) d = 2wC) d = 2wD) d is not proportional with w since 12/6  ≠ 18/10  ≠ 20/12E) d = 2w

As we see B, C and E have same relationship, matching the target.

Step-by-step explanation:

hope it's help you this answer

I need help with this​

Answers

Answer:

The correct answer is B: 3 cubic feet.

Step-by-step explanation:

If you want to find the volume of a rectangular prism, you need to know the length, width, and height. The first rectangular prism is a cube with a length of 3 feet, so the volume of the figure would be [tex]3^{3}=27 ft^{3}[/tex]. The second rectangular prism has a length of 3 feet, a width of 2 feet, and a height of 4 feet, so the volume of the prism would be 3 × 2 × 4 = [tex]24 ft^{3}[/tex]. Now that you know the 2 volumes, you need to subtract the volumes in order to find the difference, which is 27 - 24 = 3 [tex]ft^{3}[/tex].

If the mean of a standardized test with a normal distribution is 54.3 and the standard deviation is 4.6. what is the best approximation of the percent of the scores
that fall between 54.3 and 63.5?
A 34
B 47.5
C 68
D 95

Answers

Answer:

A

Step-by-step explanation:

If the mean of a standardized test with a normal distribution is 54.3 and the standard deviation is 4.6. what is the best approximation of the percent of the scores

that fall between 54.3 and 63.5?

Factor each completely.one zero has been given

f(x)=x^3-4x+16;-2

F(x) = X^4+ 2x^-13x^2 -10x + 40;2

F(x)=x^3-3x^2-13x+15;-3

F(x)=x^4-8x^3+19x^2-12x;3




Answers

The polynomials in factored form are listed below:

f(x) = (x - 3.043) · (x - 1.521 - i 1.716) · (x - 1.521 + i 1.716) f(x) = (x - 2.236) · (x - 2) · (x + 2.236) · (x + 4)f(x) = (x + 3) · (x - 5) · (x - 1)f(x) = (x - 4) · (x - 3) · (x - 1) · xHow to factor polynomials

In this question we must factor polynomials as there are both numerical and analytical methods. Mathematically speaking, factoring polynomials is represented by the following formula:

[tex]\sum^{n}_{i = 0} \,c_{i}\cdot x^{i} = \prod^{n}_{i=1}(x-r_{i})[/tex], [tex]\forall\,x, r_{i}\in \mathbb{C}[/tex]   (1)

Where:

[tex]c_{i}[/tex] - [tex]i[/tex]-th Coefficient[tex]r_{i}[/tex] - [tex]i[/tex]-th Root

Regarding fourth order polynomials we can solve them by Ferrari's method and third order polynomials by Descartes' method. Then, the solutions of each polynomials are given below:

Polynomial 1 ([tex]f(x) = x^{3}-4\cdot x +16[/tex])

f(x) = (x - 4) · (x - 3) · (x - 1) · x

Polynomial 2 ([tex]f(x) = x^{4}+2\cdot x^{3}-13\cdot x^{2}-10\cdot x + 40[/tex])

f(x) = (x - 2.236) · (x - 2) · (x + 2.236) · (x + 4)

Polynomial 3 ([tex]f(x) = x^{3}-3\cdot x^{2}-13\cdot x +15[/tex])

f(x) = (x + 3) · (x - 5) · (x - 1)

Polynomial 4 ([tex]f(x) = x^{4}-8\cdot x^{3}+19\cdot x^{2}-12\cdot x[/tex])

f(x) = (x - 4) · (x - 3) · (x - 1) · x

To learn more on polynomials, we kindly invite to check this verified question: https://brainly.com/question/17822016

Answer the Both (a) and (b) . And show the method too. I will make Brainelist + 50 points​

Answers

#a

4p-6pq+9q-64p-3(2pq+3q-2)

#b

That be x and y

So

x+y=15--(1)2x+4y=64--(2)

So

from eq(1)

x=15-y--(3)

Put in second one

2(15-y)+4y=6430-2y+4y=642y=34y=17

Put in third one

x=15-17x=-2

Take it positive

x=2

Answer:

(a) (i)  Factorize [tex]\sf 4p-6pq+9q-6[/tex]

Rewrite by swapping the order of the first two terms:

⇒ -6pq + 4p + 9q - 6

Factorize the first two terms and the last two terms separately:

⇒ -2p(3q - 2) + 3(3q - 2)

Factor out the common term (3q - 2):

(3q - 2)(-2p + 3)

(ii)

Square of the binomial: [tex](a+b)^2=a^2+2ab+b^2[/tex]

Rewrite [tex]9.9[/tex] as [tex]10 - 0.1[/tex]

Therefore, [tex]a = 10[/tex] and [tex]b = -0.1[/tex]

Also, remember that multiplying a number by 0.1 is the same as dividing it by 10.  (when dividing a decimal number by 10, simply move the decimal point 1 place to the left).

[tex]\begin{aligned}\implies 9.9^2 & =(10-0.1)^2\\ & =10^2-2 \cdot 10 \cdot 0.1+0.1^2\\& = 100-\dfrac{2 \cdot 10}{10}+\dfrac{0.1}{10}\\& =100-2+0.01\\ & =98 + 0.01\\ & = 98.01\end{aligned}[/tex]

(b) (i)

Let x = number of motor bicycles

Let y = number of cars

Given:

There are 15 vehicles of two types

⇒ x + y = 15

Given:

The number of tires in all vehicles is 64
- Motor bicycles have 2 tires each
- Cars have 4 tires each

⇒ 2x + 4y = 64

(ii)  Rewrite   x + y = 15  to make x the subject:

⇒ x = 15 - y

Substitute into 2x + 4y = 64  and solve for y:

⇒ 2(15 - y) + 4y = 64

⇒ 30 - 2y + 4y = 64

⇒ 30 + 2y = 64

⇒ 2y = 34

⇒ y = 17 cars

Substitute found value of y into  x = 15 - y  to find x:

⇒ x = 15 - 17 = -2 motorbikes

**There must be an error in the question, as with the given information, the number of motorbikes is -2, which is impossible.**

Here are the possible combinations of number of motorbikes (M) and number of cars (C) whose sum of tires is 64.  As you can see, there is no combination that sums to 15 vehicles:

0 M +  16 C = 16 vehicles

2 M +  15 C = 17 vehicles

4 M +  14 C = 18 vehicles

6 M +  13 C = 19 vehicles

8 M +  12 C = 20 vehicles

10 M +  11 C = 21 vehicles

12 M +  10 C = 22 vehicles

14 M +  9 C = 23 vehicles

16 M +  8 C = 24 vehicles

18 M +  7 C = 25 vehicles

20 M +  6 C = 26 vehicles

22 M +  5 C = 27 vehicles

24 M +  4 C = 28 vehicles

26 M +  3 C = 29 vehicles

28 M +  2 C = 30 vehicles

30 M +  1 C = 31 vehicles

32 M +  0 C = 32 vehicles

May someone please help me with this?

Answers

Answer:

Step-by-step explanation:

First, calculate the angle of FDE (assume it as α) by:

[tex]EF=\frac{\alpha}{360}\times(2\pi)(DE) \rightarrow 2\pi = \frac{\alpha}{360}(2\pi)(6)[/tex]

[tex]\alpha=60^{0}[/tex]

So, use this angle to calculate the area of FDE (unshaded region):

[tex]A_{US}=\frac{\alpha}{360}\times(\pi)(DE)^{2}=\frac{60}{360}(\pi)(6^{2})=6\pi[/tex]

So, the shaded region can be determined by:

[tex]A_{S}=A-A_{US}=\pi(DE)^{2}-6\pi=36\pi-6\pi=30\pi=\frac{60}{2}\pi[/tex]

Find the greatest possible number of consecutive zeros at the end of the product of three positive integers if the sum of these three integers equals 939.

Answers

Answer:

I think its 5 consecutive zeros.

Step-by-step explanation:

This would be a guess but I think you would need two numbers in the hundreds that also have 2 parts of which have a product of a number ending in 0, like 4 and 5.

So my guess would be

400 * 500 * 39

= 7800000

how many one third cup servings are in 16 cups

Answers

it’s 48 because you need 3, 1/3 cups to make 1 full cup so 3 times 16 is 48!

If 10% of your paycheck was withheld for federal income taxes and another 6% for state income taxes, how much would your net (or take-home) pay be?

Answers

Your net income/take-home would be 84.6 percent of the gross amount.

What is net income?

Your net income is the amount of money left after payroll deductions in the form of taxes and other charges on the gross amount of your paycheck.

If we deduct federal and state taxes, 10 percent and 6 percent respectively, we would charge 10 percent and 6 percent of 100 and have 84.6 percent of your original(gross) income left.

Please read more about net income here:

https://brainly.com/question/22739980

Other Questions
Part AThe maximum angle of elevation for a ramp designed to be safe for a motorized wheelchair is 7.1.Is the ramp at the local library safe for motorized wheelchairs? Explain your answer. ___________ are the most common cause of on-the-job injuries to construction workers. Solve by completing the square helpppWhat was a characteristic of the geography in the South?A) lots of rocky areasB) many navigable riversC) a coastline full of bays and harborsD) warm summers and cold winters Which statement best characterizes under what circumstances you should add your social media profile to a resume? You should add your profile even if it is not entirely professional. You should add your profile even if it is not entirely professional. You should add your profile, but it should be entertaining and help you stand out. You should add your profile, but it should be entertaining and help you stand out. You should not add your profile under any circumstancesit is unprofessional. You should not add your profile under any circumstancesit is unprofessional. You should add your profile, but it should be professional and positive. Write a sentence in French using a full expression of comparison (plus...que, moins...que, aussi...que) comparing the two dogs. Hill Corporation Ltd., an Internet service provider, has been providing networking solutions to Riverdale High School for over a year. However, recently the administration at Riverdale high School has been complaining of an unstable connection. You are employed by Hill Corporation for the purpose of inspecting the issue at hand. Required:What would be your first check point to ensure that there are no network issues from the service provider's end? omlyPurpleGreenBlueinNumber695of trialsBased on the data, how many timeswould you expect Anya to pick apurple marble if she ran 90 trials? PLEASE EXPLAIN SO I CAN UNDERSTAND Which of the following numberscould be the absolute value ofanother number?A -425B 1,200C -1,300D-2,525 The main goal of the ________ is to motivate employees to improve team- or company-level efficiency. someone please help me Write a story that includes:5 expressions that use the verb avoir.Use the present tense and the past tense. Your story should be 6-7 sentences long. It does not need to be elaborate. Some matter does not have heat. TrueFalse what is the purpose of placing a large electrolytic capacitor in the output side of a power supply Some bacteria live in the roots of plants like soybeans and peas.Bacteria growing on plant roots.What is the role of these bacteria in the nitrogen cycle?to absorb nitrogen-containing compounds from the soilto release free nitrogen into the atmosphereto break down nitrogen-containing compounds in dead organismsto convert free nitrogen into usable nitrogen70 points! No links just the Answer please!!! Find the length of the darkened arc. leave your answer in terms of In many Pacific Island nations, __________ languages have been created by speakers of two different languages, allowing them to communicate with one another.A.ta mokoB.PakehanC.animistD.pidgin 3 3/5 + 1 1/6 answer as a fraction Theo is a cleaner,The table shows information about the time it will take him to cleaneach of four rooms in a house,Theo wants to clean all four roomsRoomTimein one dayKitchen 1 hour 50 minutesHe will have breaks for a total timeof 85 minutes,Lounge 55 minutesTheo is going to start cleaning at 9 am,Bedroom 1 1/2 hoursWhat time will he finish cleaning?Bathroom35 minutes Which of the following is NOT true about Mansa Musa A) His religion was Islam B) He was the ruler of Mali C) He made a pilgrimage to Mecca and this established Mali as a center for Muslim culture D) All of the above is true