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s2008m [1.1K]
2 years ago
12

Solve for x to find how long (in hours) it takes the submarine to descend to the seafloor 2100 feet below the surface. SHOW WORK

AND/OR EXPLAIN WHERE YOUR ANSWER CAME FROM!
-2100 = -240x
Mathematics
2 answers:
zubka84 [21]2 years ago
8 0

Answer:

x=35/4

Step-by-step explanation:

S1- Divide both sides of the equation by the same term

-2100=-240x

-2100/-240=-240x/-240

S2- Simplify

DIvide #

Cancel terms

Move the variable to the left

x=35/4

djyliett [7]2 years ago
8 0
X=35/4 That’s your answer
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Prove that
Dovator [93]

Answer:

see explanation

Step-by-step explanation:

Using the trigonometric identities

secx = \frac{1}{cosx} , cosecx = \frac{1}{sinx}

cotx = \frac{cosx}{sinx} , tanx = \frac{sinx}{cosx}

Consider the left side

secA cosecA - cotA

= \frac{1}{cosA} × \frac{1}{sinA} - \frac{cosA}{sinA}

= \frac{1}{cosAsinA} - \frac{cosA}{sinA}

= \frac{1-cos^2A}{cosAsinA}

= \frac{sin^2A}{cosAsinA} ( cancel sinA on numerator/ denominator )

= \frac{sinA}{cosA}

= tanA = right side ⇒ proven

5 0
2 years ago
What is the length of the hypotenuse of the triangle when x = 7?<br> 5x +4<br> 4x
Anastasy [175]

Answer:

48.01

Step-by-step explanation:

5(7)+4= 39

4(7)=28

39²+ 28²= 2305

√2305 = 48.01

4 0
2 years ago
Simplify (x2y)3. need this asap
bogdanovich [222]

Answer:

3x^2y

Step-by-step explanation:

hope this helps : )

4 0
3 years ago
A singles tennis court is a rectangle 27 feet wide and 78 feet long. Suppose a player at corner A hits the ball to her opponent
Sav [38]
Basically, you just have to find the length of the rectangle that is 27 x 78 feet.
The equation for the diagonal: 
d = sqrt(l^2+w^2)
l = 27
w = 78
plug them in and solve
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d = sqrt ( 729 + 6084 )
d = sqrt ( 6813 )
d <span>≈ 82.5

The ball traveled approximately 82.5 feet from one corner of the rectangular 27 x 78 foot field, diagonally to the other side.

Hope this helps</span>

6 0
3 years ago
How many complex roots does the polynomial equation below have? x^5 - 3 = 0
const2013 [10]

For any polynomial equation, The Fundamental Theorem of Algebra tells you that the highest degree present will tell you how many complex roots the equation has. There are only two terms, "x^{5}" and "3". The x^{5} term has a degree of 5, its exponent. The 3 term has a degree of zero, because you could write it as 3 * x^{0} = 3 * 1 using the zero exponent rule.


The degrees present are 5 and 0. Choose the highest one, 5. So, the answer here is D.

8 0
3 years ago
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