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4 years ago

In 4 seconds, a sea turtle can swim 36 meters. how meny meter would he swim in 3

1 answer:

7 0

If the turtle swims 36 m in 4 seconds you divide 36 by 4 to find out how many meters he swims in one second. After you divide you get 9 meaning he swims 9 meters per second. Then you multiply 9 by 3 and you get 27 meaning the turtle swims 27 m in 3 seconds

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How do you solve this

Dmitriy789 [7]

By definition of the trig functions,

$\sin30^\circ=\dfrac y{16}$

$\cos30^\circ=\dfrac x{16}$

We have $\sin30^\circ=\dfrac12$ , so $y=8$ , and $\cos30^\circ=\dfrac{\sqrt3}2$ , so $x=8\sqrt3$ .

Just to check: we should have

$x^2+y^2=16^2$

by the Pythagorean theorem. Indeed,

$8^2+(8\sqrt3)^2=4\cdot8^2=2^2(2^3)^2=2^8=(2^4)^2=16^2$

6 0

4 years ago

Carson has 0.21 of a dollar. How many different combinations of coins could he have?

Delvig [45]

4:
2 dimes, 1 penny
21 pennies
1 dime, 2 nickels, 1 penny
4 nickels, 1 penny

4 0

3 years ago

Write a quadratic function (f) whose zeros are −8 and 2.

WINSTONCH [101]

$\bf x=-8,2\quad 
\begin{cases}
x=-8\implies &x+8=0\\
x=2\implies &x-2=0
\end{cases}
\\\\\\
(x+8)(x-2)=\stackrel{original}{polynomial}\implies x^2+6x-16=y$

6 0

4 years ago

Name the set of 4 consecutive integers starting with -4

AVprozaik [17]

-4, -3, -2, -1

Consecutive integers are integers that are exactly one unit away from each other. -4 is one unit away from -3, and likewise with -3 and -2 and -2 and -1.

7 0

3 years ago

Help me please i don't know what this is

sesenic [268]

Answer:

15/4

Step-by-step explanation:

5 = 5/1

Then you just multiply across, 5*3=15 and 1*4=4 so you get 15/4.

7 0

3 years ago

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