pls answer the question
an = −11+5(n−1)

Answer:

2758.653

Step-by-step explanation:

I'm super smart

Answer:

x = -2/5

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Equality Properties

Step-by-step explanation:

Step 1: Define

2/3(x - 2) = 4x

Step 2: Solve for x

We start with 2/3(x

−

2) = 4r

Distributing the LHS: 2/3x - 4/3 = 4x

subtracting 2/3x from both sides: -4/3 = 10/3x

Multiplying both sides by  3: -4 = 10x

Dividing both sides by  10

: -4/10 = 10x

Then we come up with -2/5.

I think it's the answer anyway:/

Hope it helps.

Answer:

$2160

Step-by-step explanation:

(320*4)+(240*1)+(160*3)+(80*2) = 2160

Four ingredients costing $320 per kg, $240 per kg, $160 per kg and $80 per kg are mixed so that their masses are in the ratio 4:1:3:2. The average cost per kg of the mixture, would be $2160.

The average is defined as the mean value of the given data which is equal to the ratio of the sum of the data value to the total number of units present in the data.

It is given that

Four ingredients costing $320 per kg, $240 per kg, $160 per kg and $80 per kg are mixed so that their masses are in the ratio 4:1:3:2.

(320 x 4) = 1280

(240 x 1) = 240

(160 x 3) = 480

(80 x 2) = 160

The averege cost per kg of the mixture,

1280 + 240 + 480 + 160

= 2160

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Answer:

B = T / 14

Step-by-step explanation:

This scenario can be represented and solved using the following equation...

B = T / 14

In this equation, the variable B represents the total number of boxes required to ship all of the loaves of bread while the variable T represents the total number of loaves of bread. Since each box can only hold 14 loaves of bread, dividing the total by 14 would essentially give us the total number of boxes needed so that all of the loaves of bread are accounted for and placed in boxes.

Answer:

-2

Step-by-step explanation:

Y=3x-2

y=3x0-2

y=-2

Answer: 17/18

Step-by-step explanation:

Answer:

3n + 12 = 4

Step-by-step explanation:

hope this help, pls mark brainliest :D

Answer:

B~48

Step-by-step explanation:

I think its 48....let me know if right or wrong sorry if wrong..

Answer:

but where is the question

kindly attach it

Answer:

-1 7/8

Step-by-step explanation:

Answer:

812.5

Step-by-step explanation:

900÷72=12.5

65×12.5=812.5

Answer:

$1.42

Step-by-step explanation:

The cost of postcard is $0.35 and the cost of large envelope is $1.42.

We have -

We can write -

14x + 5y = 12

10x + 15y = 24.80

Now, solving the equation graphically, we get -

x = 0.35

y = 1.42

Therefore, the cost of postcard is $0.35 and the cost of large envelope is $1.42.

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Answer:

5x-3

Step-by-step explanation:

three less than 5 so three will come after the 5. and the number (x) is being multiplied by 5

Answer:

its 9

Step-by-step explanation:

Answer:

She can read 28 pages in 35 minutes

Answer:

[tex]\displaystyle \cos(\alpha+\beta)=\frac{21}{221}[/tex]

Step-by-step explanation:

First, we can draw two right triangles to represent the given information.

Please refer to the attachment.

We will ignore the negatives for now.

The triangle on the left represents the ratio:

[tex]\displaystyle \tan(\alpha)=\frac{15}{8}[/tex]

And the triangle on the right represents the ratio:

[tex]\displaystyle \sin(\beta)=\frac{5}{13}[/tex]

And the unknown side, c and d, were determined using the Pythagorean Theorem.

We want to find:

[tex]\displaystyle \cos(\alpha+\beta), \; \pi/2<\alpha<\pi, \; \pi/2<\beta<\pi[/tex]

So, both α and β are in QII.

Using the Sum Identity, we can write our expression as:

[tex]\displaystyle\cos(\alpha+\beta) =\cos(\alpha)\cos(\beta)-\sin(\alpha)\sin(\beta)[/tex]

Now, we will use our triangles and what we know about our angles and quadrants.

Since α and β are in QII, cosine is always negative, sine is always positive, and tangent is always negative.

Now, we can use our trig ratios. Recall SohCahToa.

According to the first triangle, cos(α) is 8/17.

However, since α is in QII, cos(α) must be -8/17.

Likewise, according to the second triangle, cos(β) is 12/13.

Since β is in QII, cos(β) is -12/13.

Now, we can determine our sine ratios.

According to the first triangle, sin(α) is 15/17.

And since α is in QII, this stays positive.

And, sin(β), as given to us, is 5/13.

Therefore, we will substitute this into our equation. So:

[tex]\displaystyle \cos(\alpha+\beta)=(-\frac{8}{17})(-\frac{12}{13})-(\frac{15}{17})(\frac{5}{13})[/tex]

Evaluate:

[tex]\displaystyle \cos(\alpha+\beta)=\frac{96}{221}-\frac{75}{221}[/tex]

Hence:

[tex]\displaystyle \cos(\alpha+\beta)=\frac{21}{221}[/tex]

Answer: B

Step-by-step explanation:

Answer:

x=2+[tex]\sqrt[]{2}[/tex]   or x= 2-[tex]\sqrt[]{2}\\[/tex]

Step-by-step explanation:

Answer:20strikes for 10

Step-by-step explanation:

Answer: alternate interiors: 2 and 7, 6 and 3

alternate exteriors: 1 and 8, 4 and 5

corresponding: 5 and 7, 6 and 8, 1 and 3, 2 and 4

same side interiors: 2 and 3, 6 and 7

same side exteriors: 5 and 8, 1 and 4

Step-by-step explanation:

no explanation needed

Answer:

55

Step-by-step explanation:

180-125= 55

Answer:

55

Step-by-step explanation:

Line DCF is 125. A straight line is 180. So, if you are missing a degree of an angle when you have another angel given to you, then just subtract 180 from the degree that was given. So it's more like this: 180 - 125 = 55.

Answer:

I bc it has an invisible 1 at the side

Answer:

d

Step-by-step explanation:

i got it

Answer:

The correct answer is D

Step-by-step explanation:

My reason for giving this answer is because this problem is written in expression form. Since there is a variable in the expression, You cannot solve X-7 without outside information on the value of X. So D would be the answer because The answer to a multiplication problem is called the product, Then the answer to a subtraction problem is a difference. Answer D says "The product of a number and a difference", Which would mean multiplication and subtraction.

Hope this helped!

Answer:

29 games

Step-by-step explanation:

Simply divide the amount spent by the number of games.

For January, it would be 56/4 = $4 each game

The same goes on for the following months, even March since the problem states that each game costs the same amount.

So $116/$4 = 29 games.

Vernon downloaded 29 games in March.

The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.

Given:

Month   Games Downloaded    Cost

  JAN                 14                      $56

  FEB                 23                      $92

  MAR                 __                     $116

  APR                 19                      $76

Now, In January the price for each game

=56 /15

=$4 each game

In February the price for each game

=92/23

=$4 per game

So, In March

= $116/ $4

= 29 games.

Hence, Vernon downloaded 29 games in March.

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Answer:

71 degrees

Step-by-step explanation:

1. We know that the angle is unknown as demonstrated by '?'

2. The 17 side is opposite of the unknown angle

3. The 18 side the hypotenuse (not in contact with the right angle)

4. Therefore sine will be used where, sine(degree) = opposite/hypotenuse

5. The equation should be sine(degree) = 17/18

6. Since we don't know the degree we bring sine to the left and has a negative power of 1

7. The equation now becomes degree = sine^-1 (17/18)

8. The answer to this is 70.811... which equals 70 degrees and 48 minutes which rounds to the nearest degree of 71