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AlekseyPX
3 years ago
9

How to do it and what's the answer

Mathematics
1 answer:
djyliett [7]3 years ago
3 0
Combine Like Terms:

<span>=<span><span><span>13q</span>+6</span><span>−<span>6q

</span></span></span></span><span>=<span><span>(<span><span>13q</span>+<span>−<span>6q</span></span></span>)</span>+<span>(6)

</span></span></span><span>=<span><span>7q</span>+6

</span></span>Answer:<span>=<span><span>7q</span>+<span>6</span></span></span>
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1. Are these two lines parallel, perpendicular or neither?
kolezko [41]

Answer:

parallel

Step-by-step explanation:

they have the same slope, but different y intercepts

8 0
2 years ago
9 inches
Semmy [17]
What is 9 inches? Is 9 inches the diameter? Or the radius? What?

The equation for circumference is pi x diameter.

So assuming the 9 inches is the diameter:

Pi x 9 = 28.2743339

Circumference = 28.274 (3 d.p.)
7 0
4 years ago
What is the inverse matrix that can be used to solve this systems of equations
Gala2k [10]

Step-by-step explanation:

The answer is OPTION C

Find the Inverse of a 3x3 Matrix.

First

Find the Determinant of A(The coefficients of e

Proceed towards finding the CO FACTOR of the 3x3 Matrix.

+. - +

A= [ 1 -1 -1 ]

[ -1 2 3 ]

[ 1 1 4 ]

The determinant of this is 1.

Find the co factor

| 2 3 | |-1 3 | |-1 2 |

| 1. 4. | |1 4 | |1. 1 |

|-1. -1 | |1 -1 | |1 -1

| 1. 4 | |1. 4| |1 1|

|-1. -1 | |1 -1 | |1. -1

|2. 3| |-1. 3| |-1 2|

After Evaluating The Determinant of each 2x 2 Matrix

You'll have

[ 5 7 -3]

[3 5 -2 ]

[-1 -2 1]

Reflect this along the diagonal( Keep 5,5 -2)

Then switching positions of other value

No need of Multiplying by the determinant because its value is 1 from calculation.

After this

Our Inverse Matrix Would be

[ 5 3 -1 ]

[7 5 -2 ]

[ -3 -2 1]

THIS IS OUR INVERSE.

SO

OPTION C

5 0
3 years ago
Which of the following is a linear function?
olga55 [171]

Answer:

Which of the following is a linear function?

  1. y = x^3 + 1
  2. (5/6)x = y − 4
  3. y = 8x^2
  4. y =(1/5)x

<u>2. (5/6)x = y − 4 and 4. y =(1/5)x</u> are the right answers.

Step-by-step explanation:

Linear function is in the form <u>y=ax+b</u><u>.</u>

8 0
3 years ago
The manager of a theater noted that for every 10 admission tickets sold, the theater sells 3 bags of popcorn at $2.25 each, 4 so
Shalnov [3]

Answer:

$1.475 is the average amount of snack sales per ticket sold.

Step-by-step explanation:

We are given the following in the question:

Number of popcorn bags sold = 3

Cost of  a popcorn bag = $2.25

Total cost of popcorn bag = 2.25\times 3 = $6.75

Number of soda sold = 4

Cost of  a soda = $1.50

Total cost of soda = 1.50\times 4 = $6.00

Number of candy bars sold = 2

Cost of  a candy bar = $1.00

Total cost of candy bars =  1.00\times 2 = $2.00

Total sales =

Total cost of popcorn + Total cost of soda + Total cost of candy bar

= 6.75 + 6 + 2\\=\$14.75

\text{Average} = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}

Average amount of snack sales per ticket sold =

\dfrac{\text{Total sales}}{\text{Number of tickets}} = \dfrac{14.75}{10} = 1.475

Thus, $1.475 is the average amount of snack sales per ticket sold.

5 0
3 years ago
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