A scientist uses a submarine to study ocean life.
She begins 133 feet below sea level.
After descending for 4 seconds, she's 225 feet below sea level.
Find the rate of change in the submarine's elevation in feet per second. Round your
answer to the nearest tenth.

Answer:

UR MOM  the reason why im saying this cuz i want to be deleted off of brainly

Step-by-step explanation:

Answer:

#1 is 95220 #2 is 95160

Step-by-step explanation:

>

Answer:

6.59 is a rational number.

Step-by-step explanation:

It's not irregular.

Hope It Helps

Sorry If I'm Wrong

Answer: no it’s not

Step-by-step explanation:

The width and length of the rectangle given its area is 8.5 meters and 28 meters respectively.

Area of a rectangle = Length × width

238 = (4w - 6) × w

238 = 4w² - 6w

4w² - 6w - 238 = 0

a = 4

b = -6

c = -238

w = -b ± √b² - 4ac / 2a

= -(-6) ± √(-6)² - 4(4)(-238) / 2(4)

= 6 ± √36 - (-3808) / 8

= 6 ± √36 + 3808 / 8

= 6 ± √3844 / 8

= 6 ± 62 / 8

= 68/8 or -56/8

w = 8.5 or -7

So,

w = 8.5 meters

Recall,

Length of the rectangle = (4w - 6) meters

= 4(8.5) - 6

= 34 - 6

= 28 meters

Therefore, the width and length of the rectangle given its area is 8.5 meters and 28 meters respectively.

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6.66 feet/sec

SPEED = 90 / 13.5

             = 6.66 feet/ sec

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Answer:

Step-by-step explanation:

If x

1

​

=2 ,y

1

​

=

16

3

​

dx

dy

​

=(2.2

−2x

−2

−x

)ln2

(

dx

dy

​

)

x=2

​

=

8

1

​

−

4

1

​

=−

8

1

​

ln2=m

(x−x

1

​

)m=y−y

1

​

(x−2)(−

8

1

​

ln2)=y−

16

3

​

(2ln2)x+16y−3−4ln2=0 is the tangent at the point with abscissa  

′

2

′

Answer:

If he needs 5 1/4 cups for 3 1/2 batches then he needs 1 1/2 cups for a single batch.

A coordinate system is geometry is a system that employs one or more integers, or coordinates, to define the position of points. The rules that maps the other vertices of the figure to their images is T<-2, -7> (x,y).

What are coordinates?

A coordinate system is geometry is a system that employs one or more integers, or coordinates, to define the position of points or other geometric components on a manifold such as Euclidean space.

Given that Sanjay determined that one vertex of a figure was mapped to its image by translating the point 2 units left and 7 units down.

In order to translate coordinates, 2 units left we need to subtract 2 units from the x-coordinate of the point, while to translate the point 7 units down we need to subtract 7 from the y-coordinate of the point.

Therefore, the rule that maps the other vertices of the figure to their images is, (x¹,y¹)=(x-2,y-7), or it can bse written as T<-2,-7> (x, y),

where x¹ and y¹ are the coordinates of the points after transliteration.

Hence, the rule that maps the other vertices of the figure to their images is T<-2,-7> (x, y,).

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Answer:

  52 ounces

Step-by-step explanation:

You want the number of ounces of pure acid to be added to 300 ounces of 12% acid solution to produce a solution that is 25%.

Let x represent the number of ounces of acid added. Then the amount of acid in the desired solution is ...

  12%(300) +100%(x) = 25%(300 +x)

Subtracting (25%(x) +12%(300)) from both sides, we get ...

  75%(x) = 13%(300)

Dividing by the coefficient of x, we find ...

  x = (13)(300)/75 = 52

52 ounces of pure acid should be added to make a 25% acid solution.

__

Additional comment

In the original solution, there are 12%(300) = 36 ounces of acid. In the 352 ounces of final solution, there will be 36+52 = 88 ounces of acid, a proportion of 88/352 = 1/4 = 25%.

y = 64.

Step-by-step explanation:

[tex]{ \red{ \mathfrak{2}}}{ \bold{y}} = { \red{ \mathfrak{128}}}[/tex]

[tex]{ \bold{y}} = \frac{ \red{ \mathfrak{128}}}{ \red{ \mathfrak{2}}} [/tex]

[tex]{ \bold{y}} = { \red{ \mathfrak{64}}}[/tex]

[tex]{ \boxed{ \green{ { \sf{y = 64}}}}}[/tex]

Step-by-step explanation:

[tex]{ \red{ \sf{2y = 128}}}[/tex]

Divide both the sides by 2, then

[tex]{ \red{ \sf{ \frac {\cancel2}{ \cancel2}y}}} = { \blue{ \tt{ \frac{ \cancel{128} ^{64}}{ \cancel2_{1}}}}}[/tex]

[tex]{ \blue{ \boxed{ \green{ \boxed{ \pink{ \sf{y = 64}}}}}}}[/tex]

Answer:

a.  y + 3 = 0

Step-by-step explanation:

x-axis has slope of 0 so any lines parallel to x-axis has slope of 0

With m = 0 , x = -4, y = -3

y = mx + b

-3 = (0)(-4) + b

b = -3

so y = -3

or y + 3 = 0

the correct option is the first one (counting from the top).

The true statement is:

"The leading coefficients of f(x) and g(x) are opposites"

We know that f(x) and g(x) are quadratic functions, and the sum of these two functions is shown in the graph.

We can see that the sum gives a linear graph, so the terms with the exponents of 2 are cancelled by the sum.

This only can happen if f(x) and g(x) have opposite (same absolute value but different sign) leading coefficients, so the quadratic terms are cancelled when we add the functions.

For example in f(x) = 2*x^2 + 3x + 4

                         g(x) = -2x + x + 13

If we add these two functions, we would end with a line.

With that in mind we can conclude that the correct option is the first one (counting from the top).

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Answer: $1.18 per item

Step-by-step explanation:

9.44/8=$1.18 per item

The highest point is 14799 ft. higher than the lowest point.

From the information, the highest point in a country has an elevation of 14,291 feet. The lowest point in a country is at 508 fest below sea level.

The difference between the points will be:

= 14291 - (-508)

= 14291 + 508

= 14799 feet

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IT'S NOT 3???????????????

Answer:no it 11

Step-by-step explanation:

1+1 = 11

I’m kidding btw

a. The value of r = 3, -1/2.

b. The 4th term of each progression;

As, per the given question;

Let the first three terms of GP be a, ar, and ar².

The 1st, 2nd and 3rd terms of a GP equals 1st, 9th and 21st terms of an AP respectively.

where, 'r' is the common ratio in GP and 'd' is the common difference in AP.

Part 1: Multiply equation 1 by 5 and 2 by 2 and subtract 1 from 2.

2ar² - 5ar - 3a = 0

Put a = 8 and solving.

16r² - 40r - 24 = 0.

Factorising the above equation;

(r - 3)(2r + 1) = 0

Thus, r  = 3 and r = -1/2

Part 2:

Case 1: For r = 3; a =8;

ar = a + 8d

d = 2.

Thus, 4th term = a + 3d

                        = 8 + 3×2

4th term = 14.

For GP;

4th term = ar³

              = 8(3)³

4th term = 216.

Case 2: For r = -1/2; a =8;

ar = a + 8d

d = -3/2

Thus, 4th term = a + 3d

                        = 8 + 3×(-3/2)

4th term = 7/2

For GP;

4th term = ar³

              = 8(-1/2)³

4th term = -1.

Therefore, the values for the r and 4th term is estimated.

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The perimeter of the triangle will be 26 + 2c + 20b + 11d.

It should be noted that the perimeter of the triangle will be the addition of all the sides.

This will be:

26 + 5c + 10b + 7d + 4d - 3c

Collect like terms

26 + 5c - 3c + 10b + 11d

= 26 + 2c + 20b + 11d

Therefore, the perimeter of the triangle will be 26 + 2c + 20b + 11d.

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A triangle has side lengths of (26 +5c) centimeters, (10b + 7d) centimeters, and

(4d-3c) centimeters. Which expression represents the perimeter, in centimeters,

of the triangle?

4c + 26d

b + d + 26

26 + 2c + 20b + 11d.

Answer:

The solutions are

(-2.8, -2.4)   and

(1.8, 11.4)

- to the nearest tenth.

Step-by-step explanation:

x² + 4x + 1 = 3x+6

x² + 4x - 3x + 1 - 6 = 0

x² + x - 5 = 0

Using the quadratic formula:

x = [-1 +/- √((1)² - 4*1*(-5)] / 2

   = (-1 - 4.583) / 2 ,  (-1 + 4.583) / 2

   = -2.791, 1.792.

Substituting for x in the equation:

y = -2.374, 11.374.

The true statement is c. Saving by either option A or option B will allow them to meet their goal.

A true statement can be described as the statement that  that the  message is been stated or declared which could be in a communication (oral or written) in setting forth particulars or facts.

In this case, we can see that true statement is c. Saving by either option A or option B will allow them to meet their goal this is because we can see a fact from how both option present their words.

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COMPLETE QUESTION:

Option A: Stay with saving the original amount each week but take the class a week later than originally planned.

Option B: Increase the amount of money he saves each week by $15 from his original plan.

Question 6

Step-by-step explanation:

the answer is f(a)=2a²+ 4a+5

Question 7

2a²+4ah+2h²+4a+4h+5

The answers to the questions are:

This is the term that is used to refer to the graphical representation of a frequency distribution. It helps to show us the frequency that the details in the class would have to fall under.

For example, the most frequent outcome can be seen as the one that has the highest point on the graph. We can see the highest point as 7 and its frequency is 20.

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Answer:

A. 7

B. 12

C. 15

D. 16

E. 15%
F. Bell-shaped

Using it's concepts, we have that:

Hence:

A relation represents a function when each value of the input is mapped to only one value of the output.

From this graph, we have that each value of x is mapped to only one value of y, that is, there are no vertically aligned points, hence the relation is a function.

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The number of pounds of cashews should be mixed with the peanuts to ensure no change in the​ revenue is; 360 pounds

Let the number of pounds of cashews be x.

Now, we are told that A nut store normally sells cashews for​ $4.00 per pound. Thus;

Cost of x pounds of cashews = $4x

He wants to mix the above with 90 pounds of peanuts and sell the mixture for $3.5 per pound. Thus, the equation here is;

((90 * 1.5) + (4x))/(x + 90) = 3.5

135 + 4x = 3.5(x + 90)

135 + 4x = 3.5x + 315

4x - 3.5x = 315 - 135

0.5x = 180

x = 180/0.5

x = 360 pounds of peanuts

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Answer:4000 meters

Step-by-step explanation: 1 kilometer =1,000 meters

The equation of the given situation for total cost C is C = 3m + 40 where m is the number of miles.

A graph is a diagram that shows the fluctuation of one variable in relation to one or more other variables.

In order to plot the graph, we need to find out y's values corresponding to x's value

Given the graph,

Let's say the equation which is representing the situation is

C = (Slope)m + d

Where d is y-intercept = 40

Slope = difference in y's coordinate / difference in x's coordinate

Slope = (70 - 55)/(10 - 5)

Slope = 15/5 = 3

So the equation would be ;

C = 3m + 40

Hence "The equation of the given situation for total cost C is C = 3m + 40 where m is the number of miles".

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Given question is the incomplete complete question in form of the image has been attached below;

Answer:

  220

Step-by-step explanation:

You want to use differences to find the pattern and the next term in the sequence 3, 8, 15, 28, 51, 88, 143.

Subtracting each term from the next, we find the sequence of first differences to be ...

  5, 7, 13, 23, 37, 55

The first differences are not constant, so we know the sequence is not linear. They are not in an arithmetic progression, so we know the sequence is not quadratic. They do not have a common ratio, so we know the sequence is not exponential.

The second differences are the differences of the sequence of first differences. They are ...

  2, 6, 10, 14, 18

The differences of the terms of the 2nd-difference sequence are constant: 4.

  4, 4, 4, 4, 4

Constant 3rd differences mean the original sequence can be described by a 3rd degree polynomial. The coefficients found by a calculator are shown in the attachment.

Since we know the third differences are constant, we can work our way back up the chain of differences to find the next term of the original sequence.

  next 2nd difference = 18 +4 = 22

  next 1st difference = 55 +22 = 77

  next sequence term = 143 +77 = 220

The eighth term should be 220.

__

Additional comment

The n-th term is ...

  f(n) = 2/3n^3 -3n^2 +28/3n -4

The value of the perimeter of square become is 36x - 132.

According to the statement

We have to find that the perimeter of the square.

So, For this purpose, we know that the

The perimeter of the square is defined as the total length of the boundary of a square.

From the given information:

The side of the square is given which is:

9x - 33

Then

We know that the

Perimeter of square  = 4a

And substitute the values in it then

here a = 9x-33

Then after put the values Then

Perimeter of square = 4(9x-33)

Perimeter of square = 36x - 132.

The value of the perimeter of square become is 36x - 132.

So, The value of the perimeter of square become is 36x - 132.

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Answer:

24 seconds

Step-by-step explanation:

Strand A: 3 × 8 secons =24 seconds

Strand B: 2 × 12 seconds= 24 seconds

Answer:

3880 ÷ 960 = 4.041

ratio = 4:1