Adding and subtracting matrices
Question 16

Answer:

90°> =Acute

90°< =Obtuse

(90°= )= Right

Answer:

Step-by-step explanation:

1  Yes they are right angles, it is a right angle because you solve it with a Sine equation

2 the hypotenuse is the longest side

3.  If the squares of the two shorter sides add up to the square of the hypotenuse, the triangle contains a right angle.

Answer:

9 percent

Step-by-step explanation:

Answer:

3%

Step-by-step explanation:

1st Method: Increase Formula = (Last value-first value)/(first value)

Increase = (309-300)/300 = 9/300 = 3/100

= 0.03 or 3%

2nd Method: 309/300 = 103/100 = 1.03 (increase over 1 is 0.03 = 3%

Answer:

y=90x+60

Step-by-step explanation:

x=months

y=dollars

Find dollars/month by finding the slope.

(3, 330), (5, 510)

-> (510-330)/(5-3) -> 90

Since its a constant rate, the function will be in the form, y=mx+b, and since we found the slope we can plug m=90.

y=90x+b

To find be, we simply substitute one of the points.

330=90(3)+b

b=60

Thus, plugging it in,

y=90x+60

Answer:

[tex] - \frac{1}{2} [/tex]

its down 1 over 2 each time

Answer: no se ve bien

Step-by-step explanation:

mucha ilumnacion

Answer:

-5m

Step-by-step explanation:

6m-12m-4m+5m

-6m+1m

=-5m

Answer:

Non-linear

Step-by-step explanation:

Not consistently increasing

Answer:

61 ft

Step-by-step explanation:

The detailed step by step solution has been attached in pen and paper format. Feel free to ask any doubt.

Answer:

0.2

Step-by-step explanation:

When you have a decimal problem you add a 0 before the number. But if its a fraction ike 4 5/8 the decimal would be 4.58.

Answer:

x = 30

2x = 60

Step-by-step explanation:

2x + x = 90

3x = 90

x = 30

2(30) = 60

Answer:

use trig

Step-by-step explanation:

sin(15) = 100/x

x = 100/sin(15)

use calculator

Answer:

1169 in^2 Approx

Step-by-step explanation:

Given data

We know that the shape of the pencil is cylindrical

Hence the dimension is

Diameter= 12in

Radius= 12/2= 6in

Height= 25in

The surface area of a cylinder is given as

T.S.A.=2πrh+2πr^2

Substitute

T.S.A.=2*3.142*6*25+2*3.142*6^2

T.S.A.=942.6+226.224

T.S.A=1168.824

Hence the area is 1169 in^2 Approx

Answer:

24-8x

Step-by-step explanation:

Answer:jghgghfgfhgfhghfj

Step-by-step explanation:

Answer: B, is the answer

Step-by-step explanation:

The way that the line goes from 6 is represented by the equation

Answer:

x less than 6

Step-by-step explanation:

the line is going down from six and six isnt filled in so it couldnt be equal to 6

9514 1404 393

Answer:

  D)  (f⋅g)(x)=8x2−2x−15

Step-by-step explanation:

  (f·g)(x) = f(x)·g(x) = (2x -3)(4x +5) = 2x(4x +5) -3(4x +5)

  = 8x² +10x -12x -15

  (f·g)(x) = 8x² -2x -15

Answer:

your answers will be 3 and 6

Step-by-step explanation:

have a nice day !!^_^

Answer:

-10%

Step-by-step explanation:

precent change = 135 - 150

(divide both sides by 150)

precent change = -0.1

(multiply both sides by 100 so change to precent)

precent change = -10%

Answer:

10%

Step-by-step explanation:

Answer:

y= -3/4 +3

Step-by-step explanation:

slope-intercept form formula is y=mx+b

 mx= slope

 b= y-intercept

Therefore, if you input the numbers into the equation it is

y=-3/4 +3

it is 3 because this point is located at 3 on the y-axis

Answer:

41 mph

Step-by-step explanation:

122 = 3r

r = 40 2/3 mph

Answer: 9.2 miles

Step-by-step explanation:

Answer: 9.2 miles

Step-by-step explanation:  hope this helps you!

Answer:

x = 11

y = 1

Step-by-step explanation:

N : M

8 : 1

8 N = 1 M

since there is 1 M per every 8 N, y would be 1

to find x, just take 88 and divide it by 8 to get 11

Answer:

Cows produce milk per day = 330 gallons

Step-by-step explanation:

Given - Milan raises dairy cow he has 165 cows. Each cow produced

             2 gallons of milk every day.

To find - How many gallons did the cows produce per day ?

              Show solution using grid method.

Proof -

Given that,

Total cows Milan raises = 165

Now,

Given,

1 cow produce milk = 2 gallon

⇒ 165 cows produce milk = 165 × 2 gallons

Now,

By using grid method , we have

165 × 2

X                       100                        60                         5

2                        200                       120                        10

⇒ 165 × 2 = 200 + 120 + 10 = 330 gallons

∴ we get

Cows produce milk per day = 330 gallons

Answer:

:)

Step-by-step explanation:

A) 4,4

B) 2,2

C) 4,3

Hope this helps

Answer:

x = -411

Step-by-step explanation:

Number = x

Quotient of  a number and 3 : [tex]\frac{x}{3}[/tex]

(x/3) increased by (-7) : [tex]\frac{x}{3}+ (-7)[/tex]

[tex]\frac{x}{3} -7 = - 144\\\\\frac{x}{3}= -144 + 7\\\\\frac{x}{3}= -137\\\\x = -137*3[/tex]

x = - 411

Answer:

-411

Step-by-step explanation:

x / 3 + -7 = -144

x / 3 = -144 + 7

x = -137 x 3

x = -411

Hope that helps!

Answer:

a = 2/3

Step-by-step explanation:

(4(x+1) + 20 )/(x+1) = 16

4x + 4 + 20 = 16x + 16

12x = 8

x = 2/3

Answer:

1.03 inches

Step-by-step explanation:

Volume of a come = 1/3πr²h

If the height of a right cone is 3 inches shorter than the radius, then;

h = r - 3

Substitute

V = 1/3πr²(r-3)

Given that V = 17in^3

17 = 1/3πr²(r-3)

17*3 = 3.14r²(r-3)

51/3.14 = r²(r-3)

16.242 = r²(r-3)

r² = 16.242

r = √16.242

r = 4.03

Since h = r - 3

h = 4.03 - 3

h = 1.03 inches

hence the height is 1.03 inches