Which pairs of matrices are inverses?

Answer:

im pretty sure it has two real solutions

Step-by-step explanation:

1. simplify the equation given

  (4x - 6)(x + 5) = 15

     4x^2 + 20x - 6x - 30 = 15

        4x^2 + 14x - 45 = 0

2. find the discriminant (b^2 - 4ac); (a = 4, b = 14, c = -45)

  14^2 - (4 x 4 x -45)

     196 - (-720)

        916

  the discriminant is positive, so this equation has 2 real solutions

to find the solutions, factor the bolded equation (if you need help factoring, let me know!)

Answer:

The size of the wing and the size of the horizontal stabilizer

Step-by-step explanation:

Answer:

44041.03

Step-by-step explanation:

A = P(1 + r/n)^nt

   = 12400(1 + .43/12)^12(3)

   = 12400(1.03583333)³⁶

   = 12400(3.55169589)

   = 44041.029

Answer:

No, they are not equivalent

Step-by-step explanation:

Because

120/2 Can not be divided equally into 360/6

Answer:

Yes

Step-by-step explanation:

They are equivalent because if you write the ratio's out, you get 120:2 and 360:6. If you then simplify both, you get 60:1. To simplify these, you need to find a common factor. In 120:2, you can tell that both numbers can be divided by two because they are both even. After dividing, you get 60:1. In 360:6, you can tell that both numbers can be divided by 6 since they both are multiples of 6. After dividing, you get 60:1. Because these to ratio's are equal, they are equivalent.

Answer:

$898

Step-by-step explanation:

Based on Joey's debt-to-income ratio, the maximum monthly rent payment he can make and still maintain the DTI ratio is b. $898.

Joey has a DTI ratio of 36% which means that his maximum debt payment should be 36% of his income. This amount would be:

= DTI x monthly income

= 36% x 3,600

= $1,296

This can be found as:

= Maximum monthly debt payment - Car payment - Credit card payment

= 1,296 - 178 - 220

= $898

In conclusion, option B is correct.

Find out more on DTI ratios at https://brainly.com/question/24814852.

Answer:

its 48

Step-by-step explanation:

Answer:

it's 40

Step-by-step explenation

dont need one the people have brains

Reflex angle

Step-by-step explanation:

Reflex angle is more then 180 and less then 360

Answer:

yes buddy ans is reflex angle

Answer:

english please

Step-by-step explanation:

Answer:

Using trigonometry:

Let's take Tan of 60 degrees:

Tan 60 degrees = Opposite / adjacent

We can see that the opposite side is 3√3 and the adjacent side is x

Tan 60 degrees = 3√3 / x

From the trigonometric table, we know that Tan 60 degrees is √3

√3 = 3√3 / x

x = 3√3 / √3

x = 3

Now, we will take Sin of 60 degrees

Sin 60 degrees = Opposite / Hypotenuse

We can see that the opposite side is 3√3 and the hypotenuse is y

Sin 60 degrees = 3√3 / y

From the trigonometric table, we know that Sin 60 degrees is √3 / 2

√3/2 = 3√3 / y

y = 3√3 / (√3/2)

y = 3√3 * 2/√3

y = 6

Therefore, y = 6 and x = 3

Answer:

x

=

4

or

x

=

−

4

Explanation:

First divide throughout by

2

to get

x

2

=

16

Now take the square root on both sides to get

x

=

±

4

.

You may now substitute the values of

x

=

4

and

x

=

−

4

back into the original equation and check that it satisfies the equation which it does.

Step-by-step explanation:

Answer:

x= -3 , x=5

Step-by-step explanation:

4|2x-2|=32

|2x-2|=8

2x-2=8

2x-2= -8

x=5

x=-3

Answer:

40%

Step-by-step explanation:

It went down by 10 ml.

40% of 25 is 10, so te answer would be 40%

Answer:

60%

Step-by-step explanation:

Part/whole method:

[tex]\frac {15} {25} = \frac {p} {100}[/tex]

15·100=1,500

1,500÷25=60

15 is 60% of 25

Answer:

20

Step-by-step explanation:

how, because 3 is 12, 4 is 16 because multiply by 4

9514 1404 393

Answer:

Step-by-step explanation:

Assuming the table attached with C in inches and S in pounds, we see that the first differences in S are ...

  180, 540, 900

These are not constant, so the relation is not linear.

Second differences are ...

  360, 360

These are constant, so the relation is quadratic. With a short trial, we find that a suitable equation is ...

  S = 180·C²

__

The safe load for C=10 is then ...

  S = 180·10² = 18,000 . . . pounds

Answer:

(19-20)/20 = -.05 or a decrease of 5% (-5%)

Step-by-step explanation:

(final number - initial number) / initial number * 100

Answer:

200

Step-by-step explanation:

Answer:

100+100 is 200 because if you add 100 to another 100 you will get 200 :)

Answer:

0

Step-by-step explanation:

Answer: 0 is the answer

Step-by-step explanation:

Answer: the answer should be lower than because this is the percentage of people who get diagnosed with a disease that is not lupus 0.465 so about 50% or 0.5 hopefully that help I don't know the answer for the amount of people who don't have it and get misdiagnosed there is no information on it based on what I've seen  

Step-by-step explanation: Its based on a study from the Lupus Foundation of America

Answer:

B

Step-by-step explanation:

Given parameters:

Number of pencils = [tex]4\frac{1}{2}[/tex] pencils

Time taken = [tex]3\frac{1}{3}[/tex] minutes

Unknown:

Number of pencils produced in 1 minute;

Solution:

To solve this problem, let us first find the rate of the machine;

       Rate of machine = [tex]\frac{number of pencils }{time taken}[/tex]

       Rate of machine = [tex]\frac{\frac{9}{2} }{\frac{10}{3} }[/tex]   = [tex]\frac{9}{2} x \frac{3}{10}[/tex]   = [tex]\frac{27}{20}[/tex] pencils/minute

Now, number of pencils produces in 1 minute;

            Number of pencils  = rate of machine x time taken

             Number of pencils = [tex]\frac{27}{20}[/tex]  pencils/ min x 1 min

             Number of pencils = [tex]\frac{27}{20}[/tex]pencils

The number of pencils produced in 1 minute is [tex]\frac{27}{20}[/tex]

Answer:

No

Step-by-step explanation:

Counterexample for the numbers 25 and 10

The actual LCM is 50

If you were to multiply both numbers together you would get 250 which is incorrect

Answer:

n = 2/9

Step-by-step explanation:

switch sides: 63n=14

divide both sides by 63: 63n/63 = 14/63

simplify: n = 2 / 9

Answer:20 packets

Step-by-step explanation: 30,000/ 1500=20

Answer:

20 packets (answer)

Step-by-step explanation:

= 30,000/1500 = 20

=20 packets

( Glad to help:)

Answer:

1: m=2

2: g=7

3: y=13

4: a=-27

5: x=15

6: w=-18

Answer:

1. m = -2  

2. g = 7  

3. y = 13      

4. a = -36  

5. x = 15

6.  w = -18                                                                                                                                            

Step-by-step explanation:

1. Make the constant to the right-hand side and change its sign

a = 10 - 12

Calculate the difference a = -2

Solution

a = -2

2. Move variable to the left-hand side and change its sign

-g - 2 = - 9

Move constant to the right-hand side and change its sign

-g = -9 + 2

Calculate the sum

-g = -7

Change the signs on both sides of the equation

g = 7

Solution

g = 7

3. Divide both sides of the equation by - 7

-7y ÷ (-7) = -91 ÷(-7)

Any expression divided by itself equals 1

y = 91 ÷ (-7)

Divide two negatives equals a positive: (-) ÷(-)=(+)

y = 91 ÷ 7

Calculate the quotient

y = 13

Solution

y = 13

4. Multiply both sides of the equation by 9

9 x a/9 = 9 x (-4)

Reduce the number with the greatest common factor 9

a = 9 x (-4)

Multiply a positive and a negative equals a negative: (+)x(-)=(-)

a = -9 x 4

Multiply the numbers

a = -36

Solution

a = -36

5. Multiply both sides of the equation by 3/2

3/2 × 2/3x =  3/2 × 10

Reduce the numbers with the greatest common factor 3

1/2 × 2x = 3/2 × 10

Reduce the numbers with the greatest common factor 2

x = 3/2 × 10

Reduce the numbers with the greatest common factor 2

x = 3 x 5

Multiply the numbers

x = 15

Solution

x = 15

6. Multiply both sides of the equation by 9/4

9/4 x 4/9w = 9/4 x (-8)

Reduce the numbers with the greatest common factor 9

1/4 x 4w = 9/4 x (-8)

Reduce the numbers with the greatest common factor 4

w = 9/4 x (-8)

multiplying a positive and a negative equals and negative: (+)x(-)=(-)

w = -9/4 x 8

Reduce the numbers with the greatest common factor 4

w = -9 x 2

Multiply the numbers

w = -18

Solution

w = -18

Answer:

is it two m plus eight m?

Answer:

0.8x - 1.6y

Step-by-step explanation:

Step 1: Write expression

0.3(x - 2y) + 0.5x - y

Step 2: Distribute 0.3

0.3x - 0.6y + 0.5x - y

Step 3: Combine like terms

0.8x - 1.6y

Answer:

0.8x - 1.6y

-step explanation:

Answer:a

Step-by-step explanation:

Answer:

Keira : 609cm/5 = 121.8cm

Shayla : 460cm/4 = 115cm

6.8cm

Step-by-step explanation:

In this equation it looks like one of keira's wires is longer since when you divide the total number of centimeters (609) by 5, you get 121.8

The difference between keira and shayla's wire is 6.8cm

Answer:

2:1, 4:2, 6:3, 8:4, 10:5, etc.

Step-by-step explanation:

Answer:

12 : 6 24 : 12 36 : 18 48 : 24 60 : 30

2:1 (just to name a few, Let me know if one the answer)

Step-by-step explanation:

multiply both by a number, kinda like a fraction.