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Answer:

.79x+24=1.29

took way long then it should my fault but 1.29-.79=.5

x=18/.5

x=36 sorry for taking so long and this the answer i just answered it in a weird way sorry

Step-by-step explanation:

Answer:

I believe the answer is 60%

Step-by-step explanation:

Since let's think this was 10 students=100% if 40% of students went to eat salad there should only be 60% of students left.

Please mark brainliest if I helped it means a lot to me.:)

Answer:

Diameter: 25.6

Circumference: 80.38

Answer:

100N to the right

Step-by-step explanation:

Hope that this is helpful.

Have a great day.

Answer:

5,535

Step-by-step explanation:

Answer:

8

Step-by-step explanation:

8 x 5 = 40 +7 = 47

Answer:

Jackson needs 30 more widgets 2 hours

Step-by-step explanation:

The fair price to play the game as described is therefore; $19.9.

The fair price to play the game would be the average dollar amount bill.

This can be evaluated as follows;

8 singles, 6 fives, 3 twenties, and 3 hundred dollar bills can be written as;

The fair price to play the game as described is therefore; $19.9.

Read more;

https://brainly.com/question/5899088

Answer:

I can't see the graph but to find the rate of change find the change in y over the change in x. So the difference between two y-coordinates, and the difference between two x-coordinates. It's also the same as finding the slope of the line.

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Answer:

  (x, y) = (-1, 2)

Step-by-step explanation:

The augmented matrix for this system of equations is ...

  [tex]\left[\begin{array}{cc|c}2&3&4\\5&8&11\end{array}\right][/tex]

Your graphing calculator or web solver will tell you the reduced row-echelon form of this matrix is ...

  [tex]\left[\begin{array}{cc|c}1&0&-1\\0&1&2\end{array}\right][/tex]

The solution is (x, y) = (-1, 2).

_____

The determinant of the coefficient matrix is ...

  (2)(8) -(5)(3) = 1

The inverse of the coefficient matrix is the transpose of the cofactor matrix, divided by the determinant. For a 2×2 matrix, that is the original matrix with the diagonal terms swapped, and the off-diagonal terms negated, then divided by the determinant. Since the determinant is 1, the inverse of the coefficient matrix is ...

  [tex]\left[\begin{array}{cc}8&-3\\-5&2\end{array}\right][/tex]

Multiplying this by the constant vector gives the solution vector.

  x = (8)(4) +(-3)(11) = 32 -33 = -1

  y = (-5)(4) +(2)(11) = -20 +22 = 2

  (x, y) = (-1, 2)

_____

Additional comment

Many modern calculators have so many functions that there are likely many you will never use. It is a good idea to learn to use the functions available for solving the kinds of problems you run across. Recent model calculators make it easy to enter matrices and perform various functions on them.

For solving systems of linear equations, the RREF (reduced row-echelon form) function is pretty useful. The bottom row of the result will tell you the kinds of solutions; the right column(s) will tell you what they are.

Answer:

a=-13/10

b=-5/2

Step-by-step explanation:

Answer:

the units were only misalignes by a few cm

Answer:

[tex](2x - 6) + 4(x - 3) \\ 2x - 6 + 4x - 12 \\ 6x - 18[/tex]

hope helpful <3

Answer:

-1

Step-by-step explanation:

0 - (-1) + (-2) = 1 - 2 = -1

Answer:

The three numbers are 5,6&7

Answer:

  71

Step-by-step explanation:

The congruency statement tells you ...

  KL = NO

  5x -3 = 4x +7

  x = 10 . . . . . . . . add 3-4x to both sides

Then that longest side is ...

  4(10)+7 = 47

Corresponding sides are the same length in both triangles. The perimeter is the sum of side lengths:

  P = 14 + 10 + 47 = 71

The perimeter of ΔKLM is 71 units.

_____

Additional comment

A triangle with these side lengths cannot exist. The short sides are too short to connect to the ends of the long side. (The long side must be between 14 and 24 units.) I suggest you talk to your teacher about this problem.

Step-by-step explanation:

7 × 9 = (? × 9) + (? × ?)

7 × 9 = (3 × 9) + (4 × 9) or (4 × 9) + (3 × 9)

The required numbers are 3, 4, and 9 to create the expression that is equal to 7 × 9.

Arithmetic operations can also be specified by subtracting, dividing, and multiplying built-in functions.

* Multiplication operation: Multiplies values on either side of the operator

For example 4*2 = 8

A number system is defined as a way to represent numbers on the number line using a set of symbols and approaches. These symbols, which are known as digits, are numbered 0 through 9. Based on the basic value of its digits, different types of number systems exist.

We have been given numbers are 2, 3, 4, 6, 8, and 9.

To determine numbers create a different expression that is equal to 7 × 9.

Here substitute the numbers 3, 4, and 9, and we get

⇒ 7 × 9 = (3 × 9) + (4 × 9) = 63

⇒ 7 × 9 = (4 × 9) + (3 × 9) = 63

Therefore, the required numbers are 3, 4, and 9 to create the expression that is equal to 7 × 9.

Learn more about the number system here:

https://brainly.com/question/21751836

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Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation:

Use the cosine rule and see if the numbers hold true. a^2 = b^2 + c^2 - (2bc (cos x))

By substituting in our values I get that cos x = 0.838... which is possible. If cos x would equal 1.5, the there is no solution and the triangle would not be possible.

Answer:

3/4

Step-by-step explanation:

Answer:

2 x 3² x 5 x 11

Step-by-step explanation:

990 ÷ 2 = 495 so 2 is one factor

495 ÷ 2 = 247.5 - There is a remainder. So we can't divide by 2 anymore. Use next prime number

495 ÷ 3 = 165 - No remainder. So 3 is one factor

165 ÷ 3 = 55 - No remainder. So 3 is one factor

55 ÷ 3 = 18.3333 - There is a remainder. We can't divide by 3. Use next prime number

55 ÷ 5 = 11 - No remainder. So 5 is one factor

11 ÷ 5 = 2.2 - There is a remainder. We can't divide by 5. Use next prime number

11 ÷ 7 = 1.5714 - This has a remainder. So 7 is not a factor.

11 ÷ 11 = 1 - No remainder. SO 11 is one factor

Now put it together: 2 x 3² x 5 x 11

Factor trees also help. Have a good day or night

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Answer:

  32 miles

Step-by-step explanation:

To find miles per hour, divide miles by hours.

  40 mi/(1.25 h) = 32 mi/h

At that rate, Landon traveled 32 miles in 1 hour.

Answer:

0.7745

Step-by-step explanation:

Answer:

x=6y

Step-by-step explanation:

For each x the y would go up 6.

Answer:

we cant see the picture but if i could i would have solved it

Step-by-step explanation:

we cant see the picture n

The three questions are illustrations of arithmetic operations and geometric progressions

(1) Acid concentration

The given parameters are:

pH of acid lemon juice = 2

pH of acid urine = 5.5

The difference between their pH is calculated as follows:

Difference = 5.5 - 2

Difference = 3.5

Multiply the difference by 10, to calculate the acidity

Acidity = 3.5 * 10

Acidity = 35

Hence, the acid like lemon juice is 35 times stronger than urine

(2) Depreciation

The depreciation is given as:

r = 18%

In 1998, the car's worth is $19995.

This is represented as:

a = 19995

2012 is 14 years from 1998.

This is represented as:

n = 14

So, the worth of the car in 2014 is calculated using:

[tex]\mathbf{Worth =a(1 -r)^n}[/tex]

So, we have:

[tex]\mathbf{Worth =19995 \times (1 -18\%)^{14}}[/tex]

Express percentage as decimal

[tex]\mathbf{Worth =19995 \times (1 -0.18)^{14}}[/tex]

[tex]\mathbf{Worth =19995 \times 0.82^{14}}[/tex]

Evaluate

[tex]\mathbf{Worth =1243}[/tex]

Hence, the worth of the car in 2012 is $1243

(3) Spread of Gossip

The spread of the gossip is an illustration of geometric progression, where

a = 1 ---- the first term

r = 3 --- the common ratio

L =1200 --- the last term

So, we calculate the number of terms from 1 to 1200 using the following nth terms of geometric progression

[tex]\mathbf{L = ar^{n-1}}[/tex]

This gives

[tex]\mathbf{1200 = 1 \times3^{n-1}}[/tex]

[tex]\mathbf{1200 = 3^{n-1}}[/tex]

Take logarithm of both sides

[tex]\mathbf{log(1200) = log(3^{n-1})}[/tex]

Apply law of logarithm

[tex]\mathbf{log(1200) = (n-1)log(3)}[/tex]

Divide both sides by log(3)

[tex]\mathbf{n - 1 = log(1200) \div log(3)}[/tex]

[tex]\mathbf{n - 1 =6.45}[/tex]

Add 1 to both sides

[tex]\mathbf{n =7.45}[/tex]

Since the gossip spreads every two minutes.

The total time is:

[tex]\mathbf{Total =2minutes \times 7.45}[/tex]

[tex]\mathbf{Total =14.9\ minutes}[/tex]

Hence, it will take 14.9 minutes for the gossip to spread to 1200 students

Read more about geometric progressions at:

https://brainly.com/question/14320920

Answer:

I don’t know bums

Step-by-step explanation:

y’all dum