Can someone please please help me

9514 1404 393

Answer:

D. [3 1 | -9]

   [ 1 5 | 16]

Step-by-step explanation:

The matrix of B represents the coefficients of the variables. It would generally be part of a matrix equation:

  [tex]\left[\begin{array}{cc}3&1\\1&5\end{array}\right] \left[\begin{array}{c}x\\y\end{array}\right] =\left[\begin{array}{c}-9\\16\end{array}\right][/tex]

However, the entire system of equations can be represented by the augmented matrix ...

  [tex]\left[\begin{array}{cc|c}3&1&-9\\1&5&16\end{array}\right] \qquad\textbf{matches D.}[/tex]

Answer:

76.3 degrees

Step-by-step explanation:

We use inverse cosine to find the angle.

arccos(1.9/8) = 76.26 deg

Answer:

No, -1 has two outputs

Step-by-step explanation:

Hope this helps!      :3

plz mark as brainliest!

Answer:

1. 11,17,23,29

2.t=19

3. +6

4. 4

5.57

Answer:

64

Step-by-step explanation:

Answer:no graph is shown below

Step-by-step explanation:

But since is no solution they can't have the same slope.

Answer:

pretty sure its c

Step-by-step explanation:

Answer:

Original Cost: $76

Fee: 7.5%

Take 7.5% of 76 (76 times .075)  and add the result to the original amount $76

So, 76 times .075= 5.7

5.7+76= 81.7

Step-by-step explanation:

Answer:

[tex]\sqrt{29}[/tex]

Step-by-step explanation:

You would use the Pythagorean Theorem: [tex]a^{2}[/tex] + [tex]b^{2}[/tex] = [tex]c^{2}[/tex]

The a and b is the legs and the c is the hypotenuse

So when you fill it in you get [tex]2^{2}[/tex] + [tex]5^{2}[/tex] = [tex]c^{2}[/tex]

continue to solve the equation 4+25= [tex]c^{2}[/tex]

29 = [tex]c^{2}[/tex]

then you would square root it

c = [tex]\sqrt{29}[/tex]

Answer:

10 minutes.

Step-by-step explanation:

5 hours = 300 minutes

90 minutes + 105 minutes + 115 minutes = 310 minutes of programmes.

310-300 = 10 leftover minutes missed

Answer:

its A

Step-by-step explanation:

Answer:

Step-by-step explanation:

Let the number of buses be x and vans be y.

Equations as per given:

Substitute y and solve for x the second equation:

Then finding y:

The answer is 14 buses and 5 vans

Answer:

a

Step-by-step explanation:

6-2x=4x

-2x-4x= -6

-6x= -6/(-6)

x=1

the only one that has a number with out an x

Answer:

A and x=1

Step-by-step explanation:

Answer:

length of the rectangle is 19 cm and the width of the rectangle is 8 cm.

Step-by-step explanation:

The formula for the perimeter of a rectangle = 2L + 2 W

Where:

L = length and W = width

The rectangle shown has a perimeter of 54 cm

Its length is 3 more than twice its width.

2L + 2W = 54 .... Equation 1

"length is 3 more than twice its width."

L = 2W + 3.....Equation 2

Substituting 2W + 3 for L

We have:

2L + 2W = 54 .... Equation 1

2(2W + 3) + 2W = 54

4W + 6 + 2W = 54

6W = 54 - 6

6W = 48

W = 48/6

W = 8cm

L = 2W + 3.....Equation 2

L = 2(8) + 3

L = 16 + 3

L = 19 cm

Therefore:

length of the rectangle is 19 cm and the width of the rectangle is 8 cm.

Answer: a or b on edge

Step-by-step explanation:

It’s either those

Answer:

Step-by-step explanation:

6x-6+35 = 3x+29

6x - 3x = 29-29

3x = 0

x=0

Answer:

2sqaured + 24

Step-by-step explanation:

Answer:

Okay, so its kinda funny that you ask this question because its on our performance final that's due tomorrow but use elimination.

Step-by-step explanation:

Answer:

C. 23

Hope your grade raises

Step-by-step explanation:

c

Answer:

If I woke up without ya

I don't know what I would do

Thought I could be single forever 'til I met you

Usually don't be fallin', be fallin', fallin' first

You got a way of keeping me comin' back to back

I just found out the only reason that you lovin' me

Was to get back at your ex lover but before you leave

Usually I would never, would never even care

Baby, I know she creepin' I feel it in the air

Step-by-step explanation:

Answer:

y = -3x + 8

Step-by-step explanation:

Given:

The three points are (-7,134), (-3,10) and (5,50).

To find:

The equation of parabola using quadratic regression.

Solution:

The general equation of quadratic regression is

[tex]y=ax^2+bx+c[/tex] ...(i)

The three points are (-7,134), (-3,10) and (5,50).

Using the graphing calculator, we get a=3, b=-1 and c=-20. Putting these values in (i), we get

[tex]y=3x^2+(-1)x+(-2)[/tex]

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

Therefore, the equation of parabola is [tex]y=3x^2-x-2[/tex] and the missing values in the given equation are 3, -1 and -20.

Answer:

On average, she digs 45 plants per week

Step-by-step explanation:

Here, we have the number of plants dug in every saturday for three weeks

we now want to get the average of the three weeks

We proceed to add up all what has been dug in the three weeks and divide by 3

Mathematically, that would be;

(42 + 60 + 33)/3 = 135/3 = 45

Answer:

There is two ounces of water for every ounce of vegetables.

Step-by-step explanation:

Given that:

Sam needs 16 ounces of water and 8 ounces of vegetables to make 1 batch of vegetable soup.

Ratio is defined as the quantitative relation between two numbers.

We will use ratio to compare the amount of water to amount of vegetables.

Ratio of water to vegetables

16 : 8

Dividing by 8

[tex]\frac{16}{8}:\frac{8}{8}[/tex]

2:1

Hence,

There is two ounces of water for every ounce of vegetables.

Answer:

D.....

Step-by-step explanation:

all real number

The measurement which is closest to the  height of this cylinder is: C. 48 in.

Given the following data:

To determine the measurement which is closest to the  height of this cylinder in inches:

Mathematically, the volume of a cylinder is given by the formula:

[tex]Volume = \pi r^2h[/tex]

Where:

Substituting the given parameters into the formula, we have;

[tex]8478 = 15^2h\\\\8478 = 225h\\\\h=\frac{8478}{225}[/tex]

Height, h = 37.38 inches.

Closest height = 48 inches.

Read more on cylinders here: https://brainly.com/question/3287486

Answer:

4 x^ 2 − 12 x + 9

Step-by-step explanation:

multiplied the binomials

Answer: 4x^2+12x+9

Step-by-step explanation:

Answer: x = 5.625

Step-by-step explanation:  The triangles are similar; the side lengths of the large triangle are proportional to the lengths of the small triangle. The corresponding parts are proportional.

Use proportion. The total length of side FV is 16.

6:16 = x:15 . or 6/16=x/15

cross multiply 15 × 6 = 90, then divide 90/16

90/16 = x

5.625 = x