n =⟨−2,  −1⟩ and D=[tex]\left[\begin{array}{cc}-3&0\\4&1\\\end{array}\right][/tex]

What is D⋅n?

Answers

Answer 1

Answer:

6

-9

Step-by-step explanation:

-3(-2) + 0(-1)

4(-2) + 1(-1)

6 + 0

-8 + -1

6

-9

*don't forget to add brackets on each side of every calculation okay :)


Related Questions

multiply.

1 1/5x6

answer with a mixed number in simplest form.

Answers

Answer:

13.2

Step-by-step explanation:

You make the six into a fraction and then you multiply straight through

Answer:

[tex]=7\frac{1}{5}[/tex]

Step-by-step explanation:

[tex]1\frac{1}{5}\cdot \:6\\\mathrm{Convert\:mixed\:numbers\:to\:improper\:fractions}:\quad 1\frac{1}{5}=\frac{6}{5}\\1\frac{1}{5}\cdot \:6\\1\frac{1}{5}=\frac{1\cdot 5+1}{5}=\frac{6}{5}\\\frac{6}{5}\cdot \:6\\\mathrm{Convert\:element\:to\:fraction}:\quad \:6=\frac{6}{1}\\=\frac{6}{5}\cdot \frac{6}{1}\\\mathrm{Multiply\:fractions}:\quad \frac{a}{b}\cdot \frac{c}{d}=\frac{a\:\cdot \:c}{b\:\cdot \:d}\\=\frac{6\cdot \:6}{5\cdot \:1}\\\mathrm{Multiply\:the\:numbers:}\:6\cdot \:6=36\\=\frac{36}{5\cdot \:1}[/tex]

[tex]\mathrm{Multiply\:the\:numbers:}\:5\cdot \:1=5\\=\frac{36}{5}\\\mathrm{Convert\:improper\:fractions\:to\:mixed\:numbers}:\quad \frac{36}{5}=7\frac{1}{5}\\=7\frac{1}{5}[/tex]

Which of the following is not a rate?

A.doing 45 crunches in 1 minute
B.paying $3.15 for 1 gallon of gas
C.folding 6 loads of laundry in 3 days
D.walking 4 miles in 1 hour

Answers

Answer:

C

Step-by-step explanation:

Usually rate is determined as a distance over time, where the time is a unit. In other words, we have "1" of the time (for example, 1 hour, 1 second, 1 gallon, etc).

Look at each answer choice:

A: doing 45 crunches in 1 minute

This is definitely a rate because the time (1 minute) is a unit.

B: paying $3.15 for 1 gallon of gas

Again, this is considered a rate because you're paying $3.15 per gallon.

C: folding 6 loads of laundry in 3 days

We can see this isn't a rate because the time is 3 days, not 1. So C is the answer.

D: walking 4 miles in 1 hour

This is a rate because our time is 1 hour.

The answer is C.

Answer:

C.folding 6 loads of laundry in 3 days

Step-by-step explanation:

folding 6 loads of laundry in 3 days means, 6/3 = 2 loads of laundry per day.

Rate is 2 per day

What is the area of the trapezoid shown below?

Answers

Answer:

The answer is the first one, 132 square centimeters

PLZ HELP ME FIGURE THIS OUT

Answers

Answer:

m = 4

Step-by-step explanation:

3m -3 = 9

Add 3 to each side

3m -3+3 = 9+3

3m = 12

Divide each side by 3

3m/3 = 12/3

m = 4

PLSS ANSWERR NOW
Find the number if 12% of it is 10% of 6

Answers

Answer:

0.072

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

"Find the number if 12% of IT is 10% of 6."

"It" means "the number," and we can represent this number as "x."

So,

12% * x = 10% * 6

3/25x=3/5

x=5

So, the number is 5.

(This problem really isn't that hard lol)

Jamie pays 15% of her gross wage in tax.
If her net wage is £7480
find Jamie's gross wage.​

Answers

Answer:

6358

Step-by-step explanation:

15/100*7480=1122

7480-1122=6358

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the
correct position in the answer box. Release your mouse button when the item is place. If you change your mind, drag
the item to the trashcan. Click the trashcan to clear all your answers.
Enter the equation of the circle described below.
Center (5,2), radius = 3

Answers

Answer:

[tex](x-5)^2+(y-2)^2=9\\[/tex]

Step-by-step explanation:

So, you basically want the equation of the circle.

Given:

Center(C): [tex]C(5, 2)[/tex]

[tex]r=3[/tex]

The equation of circle is:

[tex](x-h)^2+(y-k)^2=r^2\\[/tex]

Where, [tex](h, k)[/tex] represents the center point and [tex]r[/tex] is the radius of the circle.

Plotting the values in the equation:

[tex](x-5)^2+(y-2)^2=3^2\\[/tex]

[tex](x-5)^2+(y-2)^2=9\\[/tex]

This is the equation of the circle of center (5, 2) and radius 3.

Answer:

(x-5)2 + (y -2)2 = 9

Step-by-step explanation:

The school's football team has 228th graders. If this is 40% of the team, how many total players are on the team?​

Answers

570

hope this helps!

Answer:

55 total students

Step-by-step explanation:

Change the percent to a decimal.

40% = 0.4

Divide the number of 8th graders by the decimal to find the total players on the team.

22/0.4 = 55

The total number of students is 55.

What is the area of this figure?

Answers

Answer:

104cm^2

Step-by-step explanation:

Area of 1st rectangle

given

l=12cm

w=6cm

A =l×w

=12cm×6cm

=72cm^2

Area of 2nd rectangle

given

l=14-6=8cm

w=4cm

A=l×w

=8cm×4cm

=32cm^2

Total area =72cm^2+32cm^2=104cm^2

104cm^2 is the area of that figure.

The probability of a spinner landing on yellow is 4/9. What is the probability of it not landing on yellow?

Answers

Answer:

5/9

Step-by-step explanation:

9/9 minus 4/9 is 5/9

Answer:

5/9

Step-by-step explanation:

4/9 + 5/9 = 9/9

I also searched it up to make sure it was correct.

Find the slope from the graph.

Answers

Answer:

-5

Step-by-step explanation:

Put the coordinates into the equation the difference of y over the difference of x. for example, -4-(-9)/-6-(-5) then you get 5/-1, which is -5.

Answer:

-5

Step-by-step explanation:

Slope = m = (y2 - y1)/(x2 - x1)

m = (-9 - (-4))/(-5 - (-6)) = (-9 + 4)/(-5 + 6) = -5/1 = -5

Answer: The slope is -5

The base of a prism is a right triangle with legs measuring 14 inches and 18 yards. If the height of the prism is 20 yards, find its volume in cubic yards

Answers

Answer:

2520 in³

Step-by-step explanation:

The volume of a prism is calculated as

V = Ah ( A is the area of the base and h the height )

A = [tex]\frac{1}{2}[/tex] bh( b is the base and h the height ), thus

A = [tex]\frac{1}{2}[/tex] × 14 × 18 = 7 × 18 = 126 in²

V = 126 × 20 = 2520 in³

The number of employees at a company is decreasing by 9.5% yearly. Currently there are 12,640 employees working at the company. Estimate the number of employees that will be working in 10 years. ( Round to whole number)

Answers

Answer:

12546

Step-by-step explanation:

9.5% = 0.95 = 95

12,640 - 95 = 12546

what is the answer which numbers go to the name hope it's not confusing?

Answers

Answer:

Mean - 7

Median - 7.5

mode - 9

range - 6

Hope it helps u

Help me please!! I will mark Brainliest!!!!

Answers

Answer:

D

Step-by-step explanation:

42 minus 31 is 11

so 11/42 = /100

Answer:

11/42 = x/100

Step-by-step explanation:

42 students and 31 are girls

42 -31 = 11 that is the number of boys

boys / total = x/100 to find the percent

11/42 = x/100

complete the shape below so that ab is a line of symmetry

Answers

Hey is it meant to be just a black screen kinda confused

Answer:

What's your question dude ? The screen is black.

carbon monoxide is a gas that is 43% carbon. carbon dioxide only 27% carbon. suppose that the environmental protection agency (epa) analyzes exhaust from cars, a mixture of carbon monoxide and carbon dioxide. if the epa finds that a 1600 mg sample of exhaust gas has 32% carbon, how many mg of the sample were carbon monoxide, and how many were carbon dioxide?

Answers

Answer:

500 mg Carbon Monoxide

1100 mg Carbon Dioxide

Step-by-step explanation:

Weight of total sample = 1600 mg

Percentage of Carbon in Carbon Monoxide = 43%

Percentage of Carbon in Carbon Dioxide = 27%

Percentage of carbon in Mixture = 32%

Let amount of Carbon Monoxide = [tex]x[/tex] mg

Amount of Carbon Dioxide in mixture = (1600-[tex]x[/tex]) mg

Amount of carbon in [tex]x[/tex] mg of Carbon Monoxide =

[tex]x \times 43\%\\\Rightarrow x \times \frac{43}{100} ...... (1)[/tex]

Amount of carbon in (1600-[tex]x[/tex]) mg of Carbon Monoxide =

[tex](1600-x) \times 27\%\\\Rightarrow (1600-x) \times \frac{27}{100}......(2)[/tex]

We know that the sample of 1600 mg contains carbon because of Carbon Monoxide and Carbon Dioxide present in it.

Adding (1) and (2) and equating to 32% of 1600 mg:

[tex]x \times \dfrac{43}{100} + (1600-x) \times \dfrac{27}{100} = 1600 \times \dfrac{32}{100}\\\Rightarrow x \times (43-27) = 1600 \times (32-27)\\\Rightarrow 16x = 1600 \times 5\\\Rightarrow x =500[/tex]

Amount of Carbon Monoxide in sample,[tex]x[/tex] = 500 mg

Amount of Carbon Dioxide in sample = (1600 - [tex]x[/tex]) = (1600 - 500) = 1100 mg

Hence, answer is

500 mg Carbon Monoxide

1100 mg Carbon Dioxide

Write the slope-intercept form of the equation for the line.

A.)y=3x-1
B.)y=1/3x+1
C.)y=1/3x-1
D.)y=-3x-1

Answers

Answer:

A.) y=3x-1

Step-by-step explanation:

Point-slope form can be shown using the equation: y = mx+b

In this case, m is slope, and b is the y-intercept.

Slope in this graph can be found by finding the rise over the run, or the number of blocks the line moves vertically over the number of blocks the line moves horizontally. The line moves at a rate of 3 blocks up for every 1 block to the right, or 3/1. That means that the slope is 3.

The y-intercept is wherever the line crosses the y-intercept, or wherever x equals 0. This happens at y = -1.

If you plug the slope (3) and the y-intercept (-1) into the equation y = mx+b, you get y = 3x-1.

The correct option is A)y=3x-1

Help with a word problem

Answers

Answer:

because it is a circular track idk....i aint smart enough for this...also because its a lap and not a straight line...and idk waht velocity is soooo

Step-by-step explanation:

At a summer camp,there are 40 girls out of the 60 campers.what is the ratio?

Answers

Answer:

40:20

Step-by-step explanation:

60 campers-40 girls= 20 boys

The graph shows the parent function f(x)=2(0.5)

Which graph represents the function g(x) = 2(0.5)x - 1?​

Answers

The answer is the top one to the right

The graph that represents the function g(x) = 2(0.5)ˣ -1 is given.

What is graph?

In mathematics, a graph is a visual representation or diagram that shows facts or values in an ordered way.

The relationships between two or more items are frequently represented by the points on a graph.

Given expression,

g(x) = 2(0.5)ˣ -1

To draw the graph take x = 0, 1,2, -1 , -2 and so on .

And draw these numbers in the graph.

Take x=0

g(0) = 1

the point is (0,1)

And now , take x = 1

g(1) = 0

the point is (1,0)

Take x =-1

g(-1) = 3

The point is (-1,3)

Therefore, the graph is given in the image.

To learn more about the line graph;

https://brainly.com/question/23680294

#SPJ5

Sarah deposits 2,000 at a bank at an interest rate of 4.5% per year. How much interest will she earn at the end of 3 years ?

Answers

Answer:

270

Step-by-step explanation:

if you multiply 2,000 times 4.5% times 3

So the right answer is $270.

Look at the attached picture

Hope it will help you

Good luck on your assignment

In one day, a yoga instructor teaches 3 classes in the morning and 4 classes in the afternoon. The length of each class is m minutes.
Which expression represents the total number of minutes the yoga instructor teaches in one day?
OA 7m
OB 7+ m
ОС. 10
D10 + m

Answers

Answer:

B. 7m

Step-by-step explanation:

She has 7 classes a day (3+4), and each takes the same number of minutes. If m stands for minutes per class, you can find the total minutes per day by multiplying 7 by m. Therefore the answer is 7m.

Example: Let's say a class takes 30 minutes, you would put 30 in the place of m, 7x30=210, so she would be teaching 210 minutes of yoga class each day.

what is the equation of this line

Answers

Answer:

Step-by-step explanation:

What is the equation of this line (eg)

Write each linear equation in standard form. a) y - 5 = -3 (x + 4) b) y = 2/3 x + 4

Given the linear equation 2x + 3y = 9. Determine the slope and y-intercept of the line. ...

Graph 4x - 3y = 12 by determining the intercepts.

Graph x + 4y = 8 by determining the intercepts.

Manny has two part-time jobs. One job pays $10/hour and the other pays $16/hour. ...

Answer:

x = 0

Step-by-step explanation:

The equation of a line is shown by using the formula y = mx+b

But, in special cases like this one, where the line is completely vertical then we use the same formula but we just adjust it.

When a line is completely straight up and down the equation is x = #

Since the line is on the y-axis (or has a x value of zero) the equation is x = 0.

There is no y in this equation because the line is hitting all values of y (which means y is ∞) with only 1 value of x. (As opposed to most equations where one or multiple values of y with one value of x or vise-versa.)

If f(x) = -7x + 5x2 + 10, what does f(-2) equal?

Answers

Answer:

44

Step-by-step explanation:

f(x) = -7x + 5x^2 + 10

f(-2) = -7(-2) + 5(-2)^2 + 10

= 14 + 20 + 10

= 44

Which description can be written as the expression StartFraction 8 Over 21 n EndFraction?
the quotient of twenty-one times a number and eight
the product of eight and twenty-one times a number
the quotient of eight and twenty-one times a number
the product of twenty-one times a number and eight

Answers

Answer:

C

Step-by-step explanation:

quotient-division

product-multiplication

(then the answer is multiplied by n not 8n)

BRAINLIEST LOL :)

Answer:

C

Step-by-step explanation:

which choice answer is it

Answers

Answer:

choice 1

Step-by-step explanation:

Given

V = πr²h ( isolate r² by dividing both sides by πh )

[tex]\frac{V}{\pi h}[/tex] = r² ( take the square root of both sides )

[tex]\sqrt{\frac{V}{\pi h} }[/tex] = r ← the positive value of r

first person gets points! hurry

Answers

Answer:

36.57 mi ^2

Step-by-step explanation:

This is a trapezoid

The area of a trapezoid is

A = 1/2 (b1+b2) *h  where b1 and b2 are the bases

A = 1/2 (3.8+10) * 5.3

A = 1/2 (13.8) *5.3

  = 36.57

Answer:

36.57

Step-by-step explanation:

b^1+b^2/2*h

10+3.8/2*5.3

36.57

Please helllpppp
Will mark as bbrainliest
Chose correct. answer for 9 and 10

Answers

Answer:

9 Yes

10 No

Step-by-step explanation:

5^2+12^2

25+144=169

13^2=169

169=169

12^2+16^2

144+256=400

19^2=361

400 does not =361

Answer:

9: Yes

20: No

Step-by-step explanation:

You're welcome

will make bianleast no picture
What is the measurement of an angle that is supplementary to an angle that measures 72°?

180°

90°

108°

18°

Answers

Answer:

108°

Step-by-step explanation:

Answer: 108

Step-by-step explanation:

Other Questions
In which figure is point G an orthocenter? Triangle A B C is a right triangle. Lines are drawn from each point to the opposite side and intersect at point G. Triangle F D E is shown. Lines are drawn from each point to the opposite side and intersect at point G. The lines cut each side into 2 equal parts. Triangle L M N is shown. Lines are drawn from each point to the opposite side and intersect at point G. Each angle has a different measure. Triangle H J K is shown. Lines are drawn from each point to the opposite side to form right angles and the lines intersect at point G. the 42nd amendment abolished untouchability true or false Primero, Eduardo se acuesta. Despus ____.a.se duermec.se afeitab.se despiertad.all of the above The product of two binomials, u(x) and v(x), is a binomial of degree 8 with a positive leading coefficient. What must be true about the sum of u(x) and v(x)? In 1-2 paragraphs explain how the first people came into North America and where did they settle. Which is the correct calculation for the volume of the prism?A prism has a length of 8 millimeters, height of 2 and one-half millimeters, and width of 8 and one-half millimeters.2 and one-half + 8 + 8 and one-half = 19 mm32 and one-half times 8 + 8 and one-half = 28.5 mm38 times 8 and one-half = 68 mm32 and one-half times 8 times 8 and one-half = 170 mm3 The perimeter of the semicircle is 25.71 cm. Calculate the value of radius x. Take pi to be 3.142 3. What is an advantage of Socialism?a. Addresses the FOR WHOM questionb. People use their power to elect officialsc. Both are correct 2. What is the formula for circumference of a circle (using radius insteadof diameter)? Which type of meter accents the first beat in each measure? Why are STDs in the United States considered a hidden epidemic? A small businessman tries to buy a computer to help with the job. He needs a small computer, but the expected growth of the business might lead to the incompatibility of the small system in the next few years. The alternatives for the businessman were limited to buying a small device or a small device that can be increased in size or a large device, and their purchase prices were 4000, 6000, and 9000, respectively. In a period of 3 years, he can replace the small or medium system with a large system at a cost of 7500 pounds or expand in the expandable device at a cost of 4000 pounds. The probability of his needs for a large computer system within 3 years has been estimated to be 80%. The probability of his needs for a small computer system within 3 years has been estimated to be 20%. o Analyze the problem using a decision tree. o State which decision is the best decision for the businessman What is the chemical formula for ammonium carbonate?(NH4)2CO3(NH4)HCO3NH4(CO3)2NH4(CO3) What is the probability of rolling an EVEN number on a 6 sided cube (die) with the numbers 1-6 on the six sides? what increases the amount of solar energy in a region A common ancestor is evident when comparing __________________ of different species in the phylum Chordata, especially in the early stages. All of the guests at a school dance choose one option for their dinner - rice and chicken, the pizza, or pasta. 45% of the guests chose the rice and chickenoption. 260 guests chose the pizza option. 25% of the guests chose the pasta option. How many guests chose rice and chicken as their dinner option? Many Southerners despised carpetbaggers because they __________.a.viewed African Americans as equalsb.were mostly former Union soldiersc.were seen as profiting from the misery and misfortune of othersd.usually had very few relatives that lived in the SouthPlease select the best answer from the choices provided Lincoln and Natalie are workers in a factory making widgets. Lincoln can make 25 widgets per day in the factory. Natalie is able to produce 8% more widgets per day than Lincoln. How many widgets can Natalie make per day? Which of the following pairs of triangles can be proven congruent through SSS?