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o-na [289]
2 years ago
9

A scuba diver is diving at a constant rate when her

Mathematics
1 answer:
Helen [10]2 years ago
4 0

Answer:

-0.25 ; 120 seconds 72 seconds

Step-by-step explanation:

Dive rate is constant :

Change in elevation after 8 seconds :

18 feets to 20 feets below

Rate of change = distance / time

(18 - 20) feets / 8 seconds

(-2 / 8) = - 0.25 feets per second

To reach 50.feets :

She needs to cover (50 - 20) = 30 feets

Time = distance / speed ; 30 feets / 0.25 = 120 seconds

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Da<br> A<br> Solve the equation 2x^2+3=0
Anika [276]

Answer:

x = ±i(√6 / 2)

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Equality Properties

<u>Algebra I</u>

  • Solving quadratics

<u>Algebra II</u>

Imaginary root i

  • √-1 = i

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

2x² + 3 = 0

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. [Subtraction Property of Equality] Subtract 3 on both sides:                        2x² = -3
  2. [Division Property of Equality] Divide 2 on both sides:                                  x² = -3/2
  3. [Equality Property] Square root both sides:                                                    x = ±√(-3/2)
  4. Simplify:                                                                                                             x = ±i(√6 / 2)
4 0
3 years ago
To run a mile, Jamal must run 4 laps around the track. His goal is to run 3 miles. Jamal has run 9 laps so far.
vodka [1.7K]
Don’t really know what your question is but 4 laps times 3 miles is 12 laps. He’s got 3 more laps to finish his goal.

Pro tip: Include the actual question
7 0
3 years ago
Read 2 more answers
?<br>12.Write an equation and solve it to find the measure of Angle TPQ.
tatuchka [14]
9 times 9 = 81 6 times 6 =36 so 36 plus 18
8 0
3 years ago
Graph the line giving one point and the slope. 2x-6y=12
koban [17]
Y = mx + c  

this is the equation of line and here m is the slope

so, 2x-6y =12   can be changed into standard format

y = 2x/6 - 12/6
y=x/3 +(-2)

so, m = 1/3   , so slope will be 1/3

hope it helped :)



8 0
3 years ago
Read 2 more answers
If cosx is approximately 0.9511, what is the measurement of x to the nearest degree? Approximately, what is the sine of the angl
ziro4ka [17]

Answer:

Using the calculator angle whose cos  is 0.9511 is  18 degrees

Sine of the complementary angle = 0.9511 also

Step-by-step explanation:

The sine of the complementary angle( which is 90-18 = 72 degrees) is same value  0.9511

8 0
3 years ago
Read 2 more answers
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