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4 years ago

The period of F(x) = 2 cos x is

Mathematics

1 answer:

Alex_Xolod [135]4 years ago

7 0

Fx-2cos(x)=0

Hope I am right

If I am can I get brainliest

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Find the zeros of the function: f(x) = x2 -7x + 12 Write your answer like this example: x=2,3 with no spaces.

KATRIN_1 [288]

Whenever a quadratic equation is in the form

$x^2-sx+p$

(i.e. the leading terms is 1), you can solve it by looking for two numbers that give $s$ when summed and $p$ when multiplied.

So, in your case,

$x^2-sx+p = x^2-7x+12 \iff s = 7,\quad p=12$

So, we're looking for two numbers $x_1,\ x_2$ such that:

$x_1+x_2 =7,\quad x_1x_2=12$

you can clearly check that these numbers are 3 and 4.

7 0

3 years ago

1) A searchlight is mounted on the front of a search and rescue helicopter. The pilot is

julia-pushkina [17]

561 cm because if you do the math mc = square you get that answr your welcome

3 0

3 years ago

Help please I'm stuck show and explain your work

Deffense [45]

The expressions D, E, and F represent a correct solution to the equation.

Step-by-step explanation:

Step 1:

First, we need to solve the given equation and find the value of x which satisfies the equation.

$6(x+4)=20, (x+4) = \frac{20}{6} = 3.333,$

$x = 3.333 - 4 = -0.666.$

So the value of x for the given equation is -0.666.

Step 2:

Now we evaluate the values of the six given options to see which ones have an x value of -0.666.

A. $\frac{20-4}{6}= \frac{16}{6} = 2.666,$

B. $\frac{1}{6} (20-4)= \frac{1}{6} (16)=\frac{16}{6} = 2.666,$

C. 20 -6 -4 = 20 - 10 = 10.

D. $\frac{20}{6} -4= 3.333 - 4 = -0.666,$

E. $\frac{1}{6} (20-24) = \frac{1}{6} (-4)= -0.666,$

F. $(20-24)\frac{1}{6} = (-4)\frac{1}{6} = -0.666.$

So the options D, E, and F represent a correct solution to the given equation.

7 0

4 years ago

What is the value of 54-4a^2+3b^3 when a=-2 and b=4

max2010maxim [7]

2015-12-14T20:17:50+00:00If you would like to know what is the value of <span>54 - 4 * a^2 + 3 * b^3 </span>when a = -2 and b = 4, you can calculate this using the following steps:

54 - 4 * a^2 + 3 * b^3 = 54 - 4 * (-2)^2 + 3 * 4^3 = 54 - 4 * 4 + 3 * 64 = 54 - 16 + 192 = 230

If you would like to know what is the value of 54 - 4 * a^2 - 3 * b^3 when a = -2 and b = 4, you can calculate this using the following steps:

54 - 4 * a^2 - 3 * b^3 = <span>54 - 4 * (-2)^2 - 3 * 4^3 = 54 - 4 * 4 - 3 * 64 = 54 - 16 - 192 = -154</span>

8 0

3 years ago

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a pair of inline skates are on sale for $90. If this price represents 9% discount from the original price, what is the original

nekit [7.7K]

The correct answer is $98.1

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3 years ago

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