I’ll mark brainlist i need help

Answer:

A)

[tex]-39.6[/tex]

B)

[tex]4.5\text{ minutes}[/tex]

Step-by-step explanation:

We know that the scuba diver is exploring a reef 39.6 meters below the sea level.

Remember that sea level is always 0 meters in elevation.

We also know that the diver ascended to the surface at a rate of 8.8 meters per minute.

Part A)

Since sea level is the 0th meter, anything below this will be negative.

So, since the diver is 39.6 meters below sea level, we can express this as:

[tex]-39.6[/tex]

Part B)

We know that the diver ascends at a rate of 8.8 meters per minute.

The diver is currently at 39.6 meters.

Remember that the surface is the sea level. So, we want to find after how many minutes m does the diver reach the 0th meter.

So, we can write the following equation and solve for m:

[tex]-39.6+8.8m=0[/tex]

The -39.6 represents the diver's current altitude.

The 8.8m represents the diver's rate of ascending 8.8 meters per minute m. Notice that 8.8m is positive because we're ascending.

And the 0 represents the 0th meter or sea level or the surface.

So, solve for m. Add 39.6 to both sides:

[tex]8.8m=39.6[/tex]

Divide both sides by 8.8. So:

[tex]m=4.5[/tex]

So, it will take the diver 4 and a half minutes to reach the surface.

And we're done!

Answer:

9

Step-by-step explanation:

If we substitute the variables for the numbers, the equation looks like this:

8+2(5)-9

Because 2s was multiplying 2 by s in the original equation, we can do that step first!

8+2(5)-9

8+10-9

Personally, I think it's a lot easier to subtract 9 from 10 first, but you can solve this part in any order.

8+10-9

8+1

This is the last part; we just have to add 8 and 1 now!

8+1=9

Hope this helps!!! Have a wonderful day C:

Answer:

P[ X < 2,4 ]  = 0,1587   or   15,87 %

Step-by-step explanation:

Normal Distribution  N ( 2,6 , 0,2 )

mean = μ₀ = 2,6 ft  and

standard dviation is

σ = 0,2 ft

Samle size 53    n  = 53

2,4 - 2,6 = 0,2

That means the difference between 2,4 and the mean of the sample ( 2,6) is equal to one standar deviation.  The empircal rule establishes that the interval [  μ₀ ± σ]  contans 68,3 % of all values, by symmetry

μ₀ - σ = 68,3/2

μ₀ - σ = 34,15

Then the half of the bell shape curve is 0,5 and  from 0,2 up to 0 ( the normalized μ₀ ) is 34,15 then dfference between

0,5 - 0,3415   =  0,1585  or   15,85% is the probability

Other procedure is:

P[ X < 2,4 ]  = [X  -  μ₀ ] / σ

P[ X < 2,4 ]  = 2,4 - 2,6 / 0,2

P[ X < 2,4 ]  = - 0,2/0,2

P[ X < 2,4 ]  = - 1

And fom z - table we find for z (score) = - 1

P[ X < 2,4 ]  = 0,1587

Answer:

0.0668

Step-by-step explanation:

z=x−μσ=2.3−2.60.2=−1.50

Using the normal distribution tables, we find that the area under the standard normal curve to the left of z=−1.50 is approximately 0.0668. Thus, the probability that an individual man’s step length is less than 2.3 feet is approximately 0.0668.

Answer:

185

Step-by-step explanation:

222/6=37

5*37=185

Answer:

1 minute

Step-by-step explanation:

141/47=3. then 3*20=60 which is equal to one minute

Answer:

27÷3 =9

Step-by-step explanation:

27 divided by 3 is 9

Answer: 3 * 9 = 27,    27 / 3= 9,  27/9 = 3

Step-by-step explanation:

3 being multiplied by 9 will give you 27.

27 divided by 9 will give you 3.

27 divide by 3 will give you 9.

Answer:

y > 5.5

Step-by-step explanation:

The answer is C

A quadratic function is one of the form f(x) = ax2 + bx + c, where a, b, and c are numbers with a not equal to zero. The graph of a quadratic function is a curve called a parabola. Parabolas may open upward or downward and vary in "width" or "steepness", but they all have the same basic "U" shape.

Plz give me brainliest

Answer:

$65.39

Step-by-step explanation:

10* $0.83= $8.30

4 * $9.50= $38.00

$15.95 + $8.30 + $38.00 + $3.14 = $65.39

(N instead of X for variable)

N x 7 < 21

Answer:

they're both acute im 100% sure

Step-by-step explanation:

Answer:

nice

Step-by-step explanation:

Answer:

2/9

Step-by-step explanation:

Any fraction in the form 0.n repeated is in the form n/9

Answer:

Yes

Step-by-step explanation:

the opposite of -6.5 is 6.5.

The absolute value of |-6.5| is 6.5.

Hope this helps.

Answer:

CT=37

Step-by-step explanation:

5x-3 = 2x+21

-2x

3x-3 = 21

+3

3x = 24

÷3

× = 8

5(8) - 3 = 37

2(8) +21 =37

Answer:

let monday be a = 800 (nearest 100)

let tuesday be b = 700 (nearest 100)

a+b = 800 + 700 = 1500

a+b = 1500

Answer:

a = [tex]\frac{3}{4}[/tex]

Step-by-step explanation:

[tex]\frac{2a}{3} -\frac{1}{6} =\frac{1}{3}[/tex]

[tex]\frac{4a}{6}-\frac{1}{6} =\frac{2}{6}[/tex]

(now you can multiply the whole equation by 6 to remove the fractions

4a - 1 = 2

4a = 2+1

4a = 3

a = [tex]\frac{3}{4}[/tex]

Answer:

a=3/4

Step-by-step explanation:

Answer:

4 11/12 Miles

Step-by-step explanation:

Step-by-step explanation:

Given parameters:

 Coordinate = (-4, 0)

Equation of the line given; y = -3x - 1

Unknown:

The equation of the line perpendicular to this = ?

Solution:

To find the equation of the line perpendicular to the given line, we need to obtain the value of the slope from this equation first.

  The slope of the perpendicular line will be the negative inverse of the one given;

  Every straight line can be written as;

                               y  = mx + c

Given line;

                               y = -3x - 1

  the slope of this line = -3

A perpendicular line to this line will have a slope of;

                         [tex]\frac{1}{3}[/tex] a negative inverse of (-3)

Now,

       Let us go ahead and find the intercept c;

    y = mx + c

    0 =  [tex]\frac{1}{3}[/tex] x (-4) + c

          c= [tex]\frac{4}{3}[/tex]

insert parameters:

       y =  [tex]\frac{1}{3}[/tex]x +  [tex]\frac{4}{3}[/tex]

Multiply through by 3;

        3y = x + 4

Answer:

253 units

Step-by-step explanation:

-253 is 253 units behind 0.

Answer:

1y157

Step-by-step explanation:

Answer:

41.4$

Step-by-step explanation:

10% of 230 is 23$

23/5=4.6

4.6$=2%

18.4$=8%

23+18.4$

41.4$

Answer:

41.4

Step-by-step explanation:

Hope this helped

Answer:

With 98x50 its like there are 98 fiveties. In 97x 50 there are 97 fiveties. There is one more 50 in 98x50.

Step-by-step explanation:With 98x50 its like there are 98 fiveties. In 97x 50 there are 97 fiveties. There is one more 50 in 98x50.

Answer:

duno

Step-by-step explanation: duno

Answer:

About 231 armadillos

Step-by-step explanation:

Step 1:

4 : 7      Ratio

Step 2:

4x + 7x = 843        Equation

Step 3:

11x = 843      Combine Like Terms

Step 4:

x = 843 ÷ 11      Divide

Step 5:

x ≈ 77

Step 6:

77 × 3      Multiply

Answer:

231

Hope This Helps :)

Answer:

Step-by-step explanation:

2.6 ÷ 2 = 1.3

Answer:

FOR QUESTION 5

1. Angle 1 congruent to angle 4; given

2. Angle 1 supplementary  to angle 2; assumed from diagram

3. Angle 4 supplementary  to angle 3; assumed from diagram

4. Angle 2 congruent to angle 3; angles supplementary to congruent angles are congruent

5. Angle 3 congruent to angle 5; verticla angles are congruent

6. Angle 2 congruent to angle 5; substitution

FOR QUESTION 6

1. Angle 2 congruent to angle 3; given

2. Angle 2 congruent to angle 1; vertical angles are congruent

3. Angle 3 congruent to angle 4; vertical angles are congruent

4. Angle 1 congruent to angle four; substituiton (see statement #1)

Step-by-step explanation: