3 years ago

Which expression is always equivalent to sin X when 0 < x <90

Mathematics

1 answer:

MA_775_DIABLO [31]3 years ago

7 0

cos (90° - x) should be the answer

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What is the area of the figure composed of a parallelogram, a square, and a rectangle?

nevsk [136]

Area of parallelogram = 10 * 3.5 = 35. Area of the square = 4*4 = 16.

8 0

3 years ago

Which two values of x are roots of the polynomial below?<br> 3x2-3x+1

QveST [7]

Answer:

The roots are

$x=\frac{1}{6} [3+ i\sqrt{3}]$

$x=\frac{1}{6} [3- i\sqrt{3}]$

Step-by-step explanation:

we have

$3x^2-3x+1$

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$3x^2-3x+1=0$

$a=3\\b=-3\\c=1$

substitute in the formula

$x=\frac{-(-3)\pm\sqrt{-3^{2}-4(3)(1)}} {2(3)}$

$x=\frac{3\pm\sqrt{-3}} {6}$

Remember that

$i=\sqrt{-1}$

$x=\frac{1}{6} [3\pm i\sqrt{3}]$

The roots are

$x=\frac{1}{6} [3+ i\sqrt{3}]$

$x=\frac{1}{6} [3- i\sqrt{3}]$

6 0

3 years ago

if Noah flips the quarter and the dime 100 times how many times should he expect the quarter to land on heads and the dime to la

Sav [38]

50 each hope this helped

4 0

3 years ago

What happens when blue sounds like thunder,but thunder tastes like red?

shusha [124]

Answer:

You may need to go to the doctor if that ever happens

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Growth or decay help!!!!

Vsevolod [243]

If the antique's value increases over time, it must be growing (not decaying) in value.

We're told the value increases by 12.12%, which means that if the current value is $x$ , then the value after 1 year is $x+0.1212x=1.1212x$ . Each year, the value increases by the same factor, which means after 2 years, the value is $1.1212(1.1212x)=1.1212^2x$ ; after 3 years, the value is $1.1212^3x$ ; and so on.

Here $x$ is the starting value of the antique. So the answer is the second choice.

5 0

4 years ago