I understand this but I want to be sure I’m right help me pls

Answer:

$10

Step-by-step explanation:

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Answer:

Step-by-step explanation:

The answer should be 8.5 I think

9514 1404 393

Answer:

  (a, b) = (4, 8)

Step-by-step explanation:

Writing both equations in general form, we have ...

  6a -5b +16 = 0

  9a -7b +20 = 0

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We can make a little array of the numbers in the equations:

  [tex]\left[\begin{array}{cccc}6&-5&16&6\\9&-7&20&9\end{array}\right][/tex]

Note that the first column is repeated at the end.

Now, we can "cross multiply" and form the differences of products in adjacent columns:

  d1 = (6)(-7) -(9)(-5) = 3 . . . . . . left 2 columns

  d2 = (-5)(20) -(-7)(16) = 12 . . . . . middle 2 columns

  d3 = (16)(9) -(20)(6) = 24 . . . . . right 2 columns

Then the solutions to these equations are the solutions to ...

  1/d1 = a/d2 = b/d3

  a = d2/d1 = 12/3 = 4

  b = d3/d1 = 24/3 = 8

The values of a and b are 4 and 8, respectively.

_____

Additional Comment

There are a number of ways to solve linear equations. This is similar to what you would get by doing "elimination". It is also similar to Cramer's Rule and Vedic math techniques. The number of math operations is about the same*. Once you learn the technique, it is fairly fast and requires no decision-making. My other favorite method is using a graphing calculator.

__

* This method uses 6 multiplications, 3 subtractions, 2 divisions. In the general case of "elimination", where the coefficients are not "nice" (as here), you would perform 7 multiplications, 4 subtractions and 2 divisions. This method is less work when the coefficients don't cancel easily.

Answer:

Q (8,0)

R (8,9)

S (5,0)

Step-by-step explanation:

I counted how many places is each point away from the line and then I counted the same amount of places on the other side in order to find the reflected angle.

Answer:

It would be 8

Step-by-step explanation:

Answer:

none

Step-by-step explanation:

Answer:

5/4

Step-by-step explanation:

They are like fractions.

So, [tex]\frac{2}{4} + \frac{3}{4}[/tex] can be written as [tex]\frac{2+3}{4}[/tex]

Thus the answer is [tex]\frac{5}{4}[/tex].

Answer:

m=4

n=-6

The above is just a possible value you can come up with your own :D.

See below for an explanation.

Step-by-step explanation:

Here you are going to really know the exponent rules. But in jest, you basically need to know that m+n=-2 due to exponent rules.

So?

An example would be

m=4

n=-6

Why?

Because 4-6=-2!

Answer:

66.5 square feet

Step-by-step explanation:

We have to find the area of the doghouse which is in the shape of right trapezoid . that is, Substitute the values, we get, Hence, Area of of the doghouse which is in the shape of right trapezoid is 66.5 square feet.

Answer:

2,5 and 2,7 I believe

Step-by-step explanation:

It should be 2,5 and 2,7

Answer:

I think it might be 23. sorry if it is wrong :(

23 cubes

My answer is assuming the question uses the squares as units.

There are 20 whole squares

Two half squares= 1 square

There are 2 sets of 2 square spaces split from one corner to the opposite. They look to be split the same way, and to also be opposite halves of each other, like the two half squares mentioned before. However, this equals two squares, because 4 in total are split equally.

Answer:

the answer could be 10/3 and decimal form is 3.3 and mixed form is 3 1/3 (i hope this helps sorry if I'm wrong!)

Step-by-step explanation:

Answer: 1/3 of an inch is 0.3 and 0.3 x 10 = 3. it did grow probably

Step-by-step explanation:

Answer:

400

Step-by-step explanation:

12 / 0.03

Divide 12 by 3 = 4.

Move the decimal place over 2 to the right.

400.

Answer:

[tex]\frac{16}{3}in^2[/tex]

Step-by-step explanation:

the area of a rectangle is the multiplication of dimensions.

A = (2/3)in * 8in = (16/3)in^2

Answer:

The two are NOT THE SAME function.

Step-by-step explanation:

The linear function that is expressed as the equation y = -x + 3, is given in the slope-intercept form, y = mx + b, where

m = slope = -1

b = y-intercept = 3

To know if this function is the same with function expressed in the table of values, let's find the slope (m) and y-intercept (b) of the function represented as a table.

✔️Slope = change in y / change in x = ∆y/∆x

Using two pairs of values form the table, say, (-4, 1) and (-2, -1):

Slope (m) = (-1 - 1) / (-2 - (-4)) = -2/2 = -1

slope (m) = -1

To find b, substitute (x, y) = (-4, 1) and m = -1 into y = mx + b,

Thus:

1 = (-1)(-4) + b

1 = 4 + b

1 - 4 = b

-3 = b

b = -3

Write the equation for the table of values by substituting b = -3 and m = -1 into y = mx + b

Thus:

y = (-1)x + (-3)

y = -x - 3

As you can see, the equation of the function of the table of values is different from the equation of the function that was stated earlier.

Therefore, we can conclude that the two functions are not the same function expressed in different ways.

Answer:

DUDE YOU USE SCHOLOGY!!

Wait is your name andy from the inbox mail tab?? Arent you in 6th grade??

I think I know you man!!

Step-by-step explanation:

Answer:

29π/12.

Step-by-step explanation:

Multiply by π/180

= 435π/180

= 29π/12 radians.

Answer:

53,320 gross income

50,120 adjusted gross income

39,370 taxable income

Step-by-step explanation:

Answer:

They should both be irrational

Step-by-step explanation:

:)

Have a nice day too!

Answer:

7.653 larger

Step-by-step explanation:

Pacific area/Southern area = (6.0061) * 10^7 / (7.8483) * 10^6

                            = 6.0061/ 7.8483    *    10^7/10^6

                            = 0.7653    *    10^(7-6)

                            = 0.7653   *   10^1

                             = 0.7653 * 10

                             = 7.653

Compared to the Southern Ocean, the Pacific Ocean is about 7.653 times larger.