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oee [108]
3 years ago
11

A coastal geologist estimates that a certain country's beaches are

Mathematics
1 answer:
andre [41]3 years ago
3 0
21/1.5=14

14 years to erode
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Hurry plz help plz don't do this for the points i will mark brainliest if given correct answer. For this item, complete the choi
Makovka662 [10]

Step-by-step explanation:

the answer is woman with elephants

8 0
3 years ago
Find the value of x in (4x -5) = 7(x -5)​
Vlad1618 [11]

Answer: x = 10

Step-by-step explanation:

( 4 x − 5 ) = 7 ( x − 5 )

Simplify  7 ( x − 5 ) .

4 x − 5 = 7 x − 35

Move all terms containing  x  to the left side of the equation.

− 3 x − 5 = − 35

Move all terms not containing  x  to the right side of the equation.  

− 3 x = − 30

Divide each term by   − 3  and simplify.

x = 10

6 0
3 years ago
Which number best represents a helicopter ascending 112 ft? A. −112 B. +112 C. 112+ D. 112−
vampirchik [111]

Answer:

B +112

Step-by-step explanation:

7 0
2 years ago
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FREE BRAINLY TO THE CORRECT ANSWER!!
Lyrx [107]

Answer: -3

Step-by-step explanation:

y = mx + b (slope intercept formula)

9x - 3y = -54

-3y = 9x - 54

Divide all by -3

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Hope this helps!

8 0
3 years ago
Find the angle of depression from the top of a lighthouse, 260 feet above water to a ship that's 270 feet offshore?
expeople1 [14]

Answer: OPTION C.

Step-by-step explanation:

Observe the triangle ABC attached.

Notice that the angle of depression is represented with \alpha.

Knowing that the top of a lighthouse is 260 feet above water and the ship is 270 feet offshore, you can find the value of  \alpha by using arctangent:

\alpha= arctan(\frac{opposite}{adjacent})

In this case you can identify that:

opposite=260\\adjacent=270

Therefore, substuting values into  \alpha= arctan(\frac{opposite}{adjacent}), you get that the angle of depression is:

 \alpha= arctan(\frac{260}{270})\\\\\alpha=43.92\°

4 0
3 years ago
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