2 years ago

Verify that each equation is an identity. Show Work plzz!!

Mathematics

1 answer:

Anna [14]2 years ago

5 0

Answer:

Step-by-step explanation:

( a + b )( a - b ) = a² - b²

( 1 + sin x )( 1 - sin x ) = 1² - sin² x = cos² x

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How many quarters make a whole

Eduardwww [97]

Answer:

Step-by-step explanation:

4×(1/4) = 1

⁄(⁄ ⁄•⁄ω⁄•⁄ ⁄)⁄

3 0

3 years ago

Help with #1 please?

anygoal [31]

7/9 + 5/6 + 3 2/3
7/9 + 5/6 + 11/3
Common denominator is 18 so we get
14/18 + 15/18 + 66/18
= 95/18 cups of milk
Multiply this by 3 (since he uses 1/3 cups per latte)
= 285/18 = 15 15/18 = 15 5/6 cups of latte

7 0

3 years ago

Suppose that (x, -8/17) is a point in quadrant IV lying on the unit circle.

AlladinOne [14]

Since the point lies on the unit circle, it satisfies

$x^2+\left(-\dfrac8{17}\right)^2=x^2+\left(\dfrac8{17}\right)^2=1$

Solving for $x$ gives two possible solutions:

$x^2=1-\left(\dfrac8{17}\right)^2$
$x=\pm\sqrt{1-\left(\dfrac8{17}\right)^2}$

Given that $x$ is in quadrant IV, you know that its value must be positive, so

$x=\sqrt{1-\left(\dfrac8{17}\right)^2}=\sqrt{\dfrac{225}{289}}$